exactmatch =
Year =
League =
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There are 3859 matches found
| Name | BBrefID | Year | Span | Games | Team | League | Location |
| Charlie Abbey | abbey-001cha | 1890 | 4/17-9/29 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Dan Abbott | abbott001dan | 1890 | 4/19-5/23 | 3 g. | Toledo | American Association | Toledo, OH |
| Dan Abbott | abbott001dan | 1890 | +5/30-7/29 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Dan Abbott | abbott001dan | 1890 | 8/21 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Dan Abbott | abbott001dan | 1890 | 9/8-9/28+ | Utica | New York State League | Utica, NY | |
| J.M. Abbott | abbott001j-- | 1890 | -6/ | Manistee | Michigan State League | Manistee, MI | |
| Louis Abel | abel--001lou | 1890 | 4/29 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| E.M. Adams | adams-000em- | 1890 | +5/30-6/16+ | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| George Adams | adams-006geo | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| George Adams | adams-006geo | 1890 | Peru | Indiana State League | Peru, IN | ||
| Jim Adams | adams-001jim | 1890 | 4/21 | 1 g. | St. Louis Browns | American Association | St. Louis, MO |
| Jim Adams | adams-001jim | 1890 | 5/17-5/31 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Arthur Agan | agan--001art | 1890 | 5/16-9/6 | Olean | New York-Pennsylvania League | Olean, NY | |
| Gus Alberts | albert001gus | 1890 | 4/17-9/29 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Charles Alcott | alcott001cha | 1890 | 5/1-7/23 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Dan Alexander | alexan001dan | 1890 | 5/15-7/12 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| William Alfonson | alfons001wil | 1890 | +5/28-8/7+ | Cobleskill | New York State League | Cobleskill, NY | |
| Allen | allen-086--- | 1890 | +6/24+ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Allen | allen-088--- | 1890 | 5/21-6/7 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Allen | allen-087--- | 1890 | 5/15-7/4+ | Erie | New York-Pennsylvania League | Erie, PA | |
| Bob Allen | allen-001bob | 1890 | 4/19- | 133 g. | Philadelphia | National League | Philadelphia, PA |
| Dick Allen | allen-001r-- | 1890 | 4/30-5/2 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| James Allen | allen-015jam | 1890 | Minneapolis Palace | Independent | Minneapolis, MN | ||
| Myron Allen | allen-001myr | 1890 | 5/13-9/11 | Cobleskill | New York State League | Cobleskill, NY | |
| James Allison | alliso005jam | 1890 | 5/13+ | Cobleskill | New York State League | Cobleskill, NY | |
| Arthur Alloway | allowa001art | 1890 | Madisonville | MiamiVal | Madisonville, | ||
| Billy Alvord | alvord001bil | 1890 | 4/17- | 116 g. | Toledo | American Association | Toledo, OH |
| Robert Ammerman | ammerm001r-- | 1890 | U. of Pennsylvania | College | , | ||
| Anderson | 1890 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |||
| Anderson | anders112--- | 1890 | +8/31+ | Chicago Franklins | Chicago City League | Chicago, IL | |
| Dave Anderson | anders007dav | 1890 | 3 g. | Philadelphia | National League | Philadelphia, PA | |
| Dave Anderson | anders007dav | 1890 | 6/12-8/23 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Dave Anderson | anders007dav | 1890 | -9/29 | 13 g. | Pittsburgh | National League | Pittsburgh, PA |
| Jake Anderson | 1890 | McCooks | Independent | McCooks, | |||
| Varney Anderson | anders001var | 1890 | 4/29-8/15 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Varney Anderson | anders001var | 1890 | 8/- | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Varney Anderson | anders001var | 1890 | +9/6+ | Sterling/Galesburg/Burlington | Illinois-Iowa League | Burlington, IA | |
| Andrews | andrew045--- | 1890 | 6/3-8/9 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Ed Andrews | andrew001ed- | 1890 | 94 g. | Brooklyn | Players League | Brooklyn, NY | |
| Jim Andrews | andrew003jim | 1890 | 4/19-7/4 | 53 g. | Chicago | National League | Chicago, IL |
| Wally Andrews | andrew002wal | 1890 | 4/17-8/22 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Wyman Andrus | andrus001wym | 1890 | 5/2-5/31 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| Wyman Andrus | andrus001wym | 1890 | 6/4-6/11 | Hamilton Hams/Montreal | International Association | Montreal, ON | |
| Wyman Andrus | andrus001wym | 1890 | 6/14-7/5 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Wyman Andrus | andrus001wym | 1890 | 24 g. | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Louis Angevine | angevi001lou | 1890 | 6/18-6/25 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Bill Annis | annis-001bil | 1890 | 4/19-8/13 | Hartford | Atlantic Association | Hartford, CT | |
| Bill Annis | annis-001bil | 1890 | 9/2- | Hartford | S.-pro | Hartford, CT | |
| Spencer Ansell | ansell001spe | 1890 | 5/22-7/25 | Olean | New York-Pennsylvania League | Olean, NY | |
| Spencer Ansell | ansell001spe | 1890 | +9/22+ | Wellsville | WestNY | Wellsville, NY | |
| Cap Anson | anson-001cap | 1890 | 139 g. | Chicago | National League | Chicago, IL | |
| Chauncy Archiquette | archiq001c-- | 1890-99 | Haskell Institute | School | , | ||
| Chauncy Archiquette | archiq001c-- | 1890-99 | Carlisle School | School | , | ||
| Joe Ardner | ardner001joe | 1890 | 4/19-8/18 | 84 g. | Cleveland | National League | Cleveland, OH |
| Armitage | armita000--- | 1890 | 7/4-7/17 | Albany | New York State League | Albany, NY | |
| Billy Armitage | armita001bil | 1890 | 4/30-7/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Bill Armour | armour001wil | 1890 | 5/15-9/15 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Frank Armstrong | armstr001fra | 1890 | 3/31-6/6 | Dallas Hams | Texas League | Dallas, TX | |
| Frank Armstrong | armstr001fra | 1890 | Joplin | Independent | Joplin, MO | ||
| Frank Armstrong | armstr001fra | 1890 | 6/28-11/23 | Stockton | California League | Stockton, CA | |
| Tug Arundel | arunde001tug | 1890 | 5/1-7/4 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay City, MI | |
| Tug Arundel | arunde001tug | 1890 | +7/11-7/16+ | Utica | New York State League | Utica, NY | |
| Ed Ashenbach | ashenb001edw | 1890 | 4/30-5/18 | Canton Nadjys | Tri-State League | Canton, OH | |
| Al Atkinson | atkins001al- | 1890 | 5/20 | Toronto Canucks | International Association | Toronto, ON | |
| Al Atkinson | atkins001al- | 1890 | Umpire | Int | , | ||
| Auberger | auberg001--- | 1890 | 4/4-6/1 | Austin Senators | Texas League | Austin, TX | |
| William Augustine | august001w-- | 1890 | +4/24+ | U. of Wisconsin | College | , | |
| William Augustine | august001w-- | 1890 | Houghton | MiSt | Houghton, MI | ||
| W. Aurelius | 1890 | +9/27+ | Pullman YMCA | Independent | Pullman, IL | ||
| William Avery | avery-002wil | 1890 | 5/18 | Seattle | Pacific Northwest League | Seattle, WA | |
| Jake Aydelott | aydelo001jak | 1890 | 5/1-6/30 | Bluffton | Indiana State League | Bluffton, IN | |
| Jake Aydelott | aydelo001jak | 1890 | 7/1-7/24 | Muncie | Indiana State League | Muncie, IN | |
| Louis Bacon | bacon-001jam | 1890 | 5/1-6/2 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| Louis Bacon | bacon-001jam | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| Herman Bader | bader-001her | 1890 | 4/19-8/4 | Washington Senators | Atlantic Association | Washington, DC | |
| Herman Bader | bader-001her | 1890 | +8/12-9/28+ | Albany | New York State League | Albany, NY | |
| Frank Badger | badger001fra | 1890 | Jefferson | Independent | Jefferson, WI | ||
| John Bahem | bahem-000joh | 1890 | +5/22-5/30+ | Olean | New York-Pennsylvania League | Olean, NY | |
| Bailey | bailey028--- | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| Timothy Bailey | bailey003tim | 1890 | 5/1-9/24+ | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Baker | baker-080--- | 1890 | +8/31+ | Chicago Rivals | Chicago City League | Chicago, IL | |
| Jack Baker | baker-003jac | 1890 | 5/2-8/6 | McKeesport | Tri-State League | McKeesport, PA | |
| Jack Baker | baker-003jac | 1890 | 8/15-9/4 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Kirtley Baker | baker-001kir | 1890 | 5/7- | 26 g. | Pittsburgh | National League | Pittsburgh, PA |
| Norm Baker | baker-001nor | 1890 | 4/22-8/25 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Norm Baker | baker-001nor | 1890 | 8/28-8/30 | 2 g. | Baltimore | American Association | Baltimore, MD |
| Jersey Bakley | bakely001jer | 1890 | 43 g. | Cleveland | Players League | Cleveland, OH | |
| Baldwin | 1890 | +9/22+ | Wellsville | WNYSt | Wellsville, NY | ||
| Kid Baldwin | baldwi001kid | 1890 | 22 g. | Cincinnati | National League | Cincinnati, OH | |
| Kid Baldwin | baldwi001kid | 1890 | 24 g. | Philadelphia | American Association | Philadelphia, PA | |
| Lady Baldwin | baldwi001lad | 1890 | - 6/26 | 2 g. | Brooklyn | National League | Brooklyn, NY |
| Lady Baldwin | baldwi001lad | 1890 | 7 g. | Buffalo | Players League | Buffalo, NY | |
| Mark Baldwin | baldwi001mar | 1890 | 58 g. | Chicago | Players League | Chicago, IL | |
| Ball | ball--001--- | 1890 | +5/27+ | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Louis Balsz | balsz-002lou | 1890 | 4/6-4/20 | Sacramento Senators | California League | Sacramento, CA | |
| Louis Balsz | balsz-002lou | 1890 | Valejo | SF | Valejo, CA | ||
| Louis Balsz | balsz-002lou | 1890 | Helena | Independent | Helena, MT | ||
| Harry Bamberger | bamber001hen | 1890 | 5/1-7/5 | Marion/Logansport | Indiana State League | Marion, IN | |
| Harry Bamberger | bamber001hen | 1890 | 7/- | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Frank Bandle | bandle002fra | 1890 | 6/1-9/16 | Umpire | WestA | , | |
| Jim Banning | bannin001jim | 1890 | 5/2-5/23 | Detroit Wolverines | International Association | Detroit, MI | |
| Bardeen | bardee002--- | 1890 | -6/25 | Elkhart | Indiana State League | Elkhart, IN | |
| Doug Barnes | barnes001dou | 1890 | 4/29-5/20 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Doug Barnes | barnes001dou | 1890 | 6/14-6/21 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Frank Barnes | 1890 | Brooklyn | Brooklyn, NY | ||||
| John Barnes | barnes003joh | 1890 | 5/3-10/12 | Spokane | Pacific Northwest League | Spokane, WA | |
| R.D. Barnes | barnes002r-- | 1890 | 5/- | Joliet | Illinois-Iowa League | Joliet, IL | |
| Riley Barnes | 1890 | Kearney | Independent | Kearney, NE | |||
| Ross Barnes | barnes001ros | 1890 | MLB Umpire | Players League | , | ||
| W.O. Barnes | barnes001w-- | 1890 | 4/30-5/6 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Jack Barnett | barnet003joh | 1890 | Olean | New York-Pennsylvania League | Olean, NY | ||
| Billy Barnie | barnie001bil | 1890 | 4/19-8/26 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Billy Barnie | barnie001bil | 1890 | 8/27- | 38 g. | Baltimore | American Association | Baltimore, MD |
| Bob Barr | barr--001bob | 1890 | 4/19- | 57 g. | Rochester | American Association | Rochester, NY |
| Barrett | barret040--- | 1890 | +5/23-6/11+ | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Barrett | barret045--- | 1890 | +5/28+ | Cobleskill | New York State League | Cobleskill, NY | |
| Tommy Barrett | barret002tom | 1890 | +8/31+ | Chicago Whitings | Chicago City League | Chicago, IL | |
| Barry | barry-019--- | 1890 | 4/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Barry | 1890 | -9/4+ | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | ||
| Jack Barry | barry-002jac | 1890 | 7/18-8/29+ | Albany | New York State League | Albany, NY | |
| Romeo Barry | barry-001rom | 1890 | 5/20 | Portland | Pacific Northwest League | Portland, OR | |
| Dick Bartell | bartel001dic | 1890 | Chicago West Ends | Chicago City League | Chicago, IL | ||
| Charlie Bartson | bartso001cha | 1890 | 5/14-9/16 | 26 g. | Chicago | Players League | Chicago, IL |
| Charley Bassett | basset001cha | 1890 | 100 g. | New York | National League | New York, NY | |
| Charlie Bastian | bastia001cha | 1890 | 80 g. | Chicago | Players League | Chicago, IL | |
| Batchelor | batche002--- | 1890 | 6/3-8/7 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Bates | 1890 | 6/12-6/17 | Umpire | EIntSt | , | ||
| Elmer Bates | bates-000elm | 1890 | 5/-6/20+ | Bluffton | Indiana State League | Bluffton, IN | |
| John Bates | bates-004joh | 1890 | 4/4-4/28 | Austin Senators | Texas League | Austin, TX | |
| Joe Battin | battin001joe | 1890 | 4/18-5/28 | 29 g. | Syracuse | American Association | Syracuse, NY |
| Joe Battin | battin001joe | 1890 | 6/2-7/5 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay City, MI | |
| Joe Battin | battin001joe | 1890 | +7/18-9/25+ | Utica | New York State League | Utica, NY | |
| Al Bauer | bauer-001al- | 1890 | 10/11 | MLB Umpire | American Association | , | |
| Baumgartner | baumga012--- | 1890 | Peru | Indiana State League | Peru, IN | ||
| George Bausewine | bausew003geo | 1890 | 5/14-6/19 | St. Paul Apostles | Western Association | St. Paul, MN | |
| George Bausewine | bausew003geo | 1890 | Umpire | WestA | , | ||
| George Bausewine | bausew003geo | 1890 | 8/9 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Baxter | baxter010--- | 1890 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | ||
| Frank Baxter | baxter001fra | 1890 | Lafayette | College | , | ||
| Frank Baxter | baxter001fra | 1890 | 6/11-7/18 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Frank Baxter | baxter001fra | 1890 | 7/22-9/1 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Baylers | 1890 | Port Huron | Michigan State League | Port Huron, MI | |||
| G. M. Bayliss | 1890 | -5/ | Port Huron | Michigan State League | Port Huron, MI | ||
| Bays | bays--000--- | 1890 | 7/4-7/22 | Erie | New York-Pennsylvania League | Erie, PA | |
| Roman? Bays | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | |||
| William Bays | bays--003wil | 1890 | 5/6-5/17 | Portland | Pacific Northwest League | Portland, OR | |
| William Bays | bays--003wil | 1890 | Helena | Independent | Helena, MT | ||
| William Bays | bays--003wil | 1890 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | ||
| Beadle | beadle001--- | 1890 | New York Metroplitans | Independent | New York, NY | ||
| Beadle | beadle001--- | 1890 | 7/7-7/19+ | Albany | New York State League | Albany, NY | |
| T. Beady | beady-001t-- | 1890 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | ||
| Alex Beam | beam--001ale | 1890 | 5/3-5/22 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Ernie Beam | beam--001ern | 1890 | 5/30-6/2 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Ernie Beam | beam--001ern | 1890 | 6/13-7/15 | Erie | New York-Pennsylvania League | Erie, PA | |
| F. Beamer | beamer001f-- | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| Ollie Beard | beard-001oll | 1890 | 122 g. | Cincinnati | National League | Cincinnati, OH | |
| Beardsley | 1890 | Kearney | Independent | Kearney, NE | |||
| Ed Beatin | beatin001ed- | 1890 | 54 g. | Cleveland | National League | Cleveland, OH | |
| Bebo | bebo--001--- | 1890 | 7/28 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Buck Becannon | becann001buc | 1890 | New York Alaskas | Independent | New York, NY | ||
| Beck | 1890 | -6/ | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | ||
| Beck | 1890 | 6/- | Dubuque | Independent | Dubuque, IA | ||
| Jake Beckley | beckle001jac | 1890 | 124 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| E. Beckwith | beckwi001e-- | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | ||
| E. Beckwith | beckwi001e-- | 1890 | +7/5-9/23 | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Walter Beebe | beebe-001wal | 1890 | 5/13-5/27+ | Oneonta | New York State League | Oneonta, NY | |
| Walter Beebe | beebe-001wal | 1890 | +6/4-9/1 | Cobleskill | New York State League | Cobleskill, NY | |
| L. Beech | beech-001l-- | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| Ed Beecher | beeche001ed- | 1890 | -7/16 | 126 g. | Buffalo | Players League | Buffalo, NY |
| Philip Begy | begy--001phi | 1890 | Rochester Ninth Ward Stars | Independent | Rochester, NY | ||
| Philip Begy | begy--001phi | 1890 | +6/28-7/25+ | Olean | New York-Pennsylvania League | Olean, NY | |
| James Behan | behan-001jam | 1890 | 4/29-8/9 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Frank Behne | behne-001fra | 1890 | 4/4-6/1 | Austin Senators | Texas League | Austin, TX | |
| Frank Behne | behne-001fra | 1890 | 6/7 | Houston Mud Cats | Texas League | Houston, TX | |
| Frank Behne | behne-001fra | 1890 | 6/27-7/8 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Frank Behne | behne-001fra | 1890 | 7/3-7/27 | Umpire | CIntSt | , | |
| Frank Behne | behne-001fra | 1890 | 7/31-8/17 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Richard Belcher | belche001ric | 1890 | 5/27-6/4 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Richard Belcher | belche001ric | 1890 | 11/17 | Stockton | California League | Stockton, CA | |
| Charlie Bell | bell--003cha | 1890 | 4/19-7/16 | Kansas City Blues | Western Association | Kansas City, MO | |
| Charlie Bell | bell--003cha | 1890 | 9/12-9/30 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Jack Bellman | bellma001jac | 1890 | 3/30-5/3 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Jack Bellman | bellma001jac | 1890 | 5/26-6/3 | Houston Mud Cats | Texas League | Houston, TX | |
| Bemis | bemis-002--- | 1890 | 4/30-5/6 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Benedict | benedi003--- | 1890 | 5/24 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Charlie Bennett | bennet005cha | 1890 | 85 g. | Boston | National League | Boston, MA | |
| Harry Bennett | bennet003har | 1890 | +5/15+ | Muncie | Indiana State League | Muncie, IN | |
| Harry Bennett | bennet003har | 1890 | 5/-6/20+ | Elkhart | Indiana State League | Elkhart, IN | |
| William Bennett | 1890 | Morrisville Eclipse | Morrisville, | ||||
| William Bennett | 1890 | Woolen Workes | Trades | , | |||
| William Bennett | 1890 | Amos Rogers | TrenCity | Amos, NJ | |||
| William Bennett | 1890 | Trenton | Independent | Trenton, NJ | |||
| William Bennett | 1890 | Roebling | Independent | , | |||
| W.F. Bent | bent--001w-- | 1890 | no g. | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| Benton | benton006--- | 1890 | 5/- | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Edward Berchtold | bercht001edw | 1890 | 5/6-8/9 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Horner Berger | berger002a-- | 1890 | 4/30- | 70 g. | Akron Akrons | Tri-State League | Akron, OH |
| Horner Berger | berger002a-- | 1890 | Erie | New York-Pennsylvania League | Erie, PA | ||
| Tun Berger | berger001tun | 1890 | 5/9- | 104 g. | Pittsburgh | National League | Pittsburgh, PA |
| Martin Berkery | berker002mar | 1890 | Selma | Independent | Selma, AL | ||
| Bob Berryhill | berryh001rob | 1890 | 5/1-7/5 | Marion/Logansport | Indiana State League | Marion, IN | |
| Bob Berryhill | berryh001rob | 1890 | 7/6- | Marion/Logansport | Indiana State League | Logansport, IN | |
| Berryman | 1890 | Hancock | UppPenin | Hancock, MI | |||
| Shorty Berthold | bertho001sho | 1890 | Pine Bluff | Independent | Pine Bluff, AR | ||
| Fred Betts | betts-001fre | 1890 | 4/30-7/9 | Springfield | Tri-State League | Springfield, OH | |
| Fred Betts | betts-001fre | 1890 | 7/10-8/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Fred Betts | betts-001fre | 1890 | 8/13-9/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Frank Beymer | beymer001fra | 1890 | 5/-5/9 | Joliet | Illinois-Iowa League | Joliet, IL | |
| Fred Bickelhaupt | bickel001fre | 1890 | Hannibal | Independent | Hannibal, MO | ||
| Fred Bickelhaupt | bickel001fre | 1890 | 8/5 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| G. Bickhart | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | |||
| Charles Bierbauer | bierba001cha | 1890 | +6/3-7/12+ | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Lou Bierbauer | bierba002lou | 1890 | 133 g. | Brooklyn | Players League | Brooklyn, NY | |
| Bigelow | bigelo001--- | 1890 | San Francisco Haverlys | California League | San Francisco, CA | ||
| Bigelow | bigelo001--- | 1890 | 6/- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Bigelow | bigelo001--- | 1890 | -6/ | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Frank Bird | bird--001fra | 1890 | 4/19-8/4 | Washington Senators | Atlantic Association | Washington, DC | |
| Frank Bird | bird--001fra | 1890 | +9/12-9/29+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Peter Bird | bird--000pet | 1890 | Buffalo Socials | Independent | Buffalo, NY | ||
| Peter Bird | bird--000pet | 1890 | +5/30-6/24+ | Troy | New York State League | Troy, NY | |
| T. S. Bird | 1890 | preseason | Omaha Omahogs/Lambs | Western Association | Omaha, NE | ||
| Mike Birmingham | birmin001mic | 1890 | Calumet | Northern | Calumet, MI | ||
| Mike Birmingham | birmin001mic | 1890 | Marquette | UppPenin | Marquette, MI | ||
| Birnan | 1890 | Albany | New York State League | Albany, NY | |||
| Bill Bishop | bishop002bil | 1890 | 5/22-8/1 | Mansfield | Tri-State League | Mansfield, OH | |
| Bill Bishop | bishop002bil | 1890 | 8/13-9/1+ | Oneonta | New York State League | Oneonta, NY | |
| Red Bittmann | bittma001red | 1890 | 4/18-4/24 | Kansas City Blues | Western Association | Kansas City, MO | |
| Red Bittmann | bittma001red | 1890 | 5/24-6/6 | Dallas Hams | Texas League | Dallas, TX | |
| Red Bittmann | bittma001red | 1890 | 6/30-8/3 | Akron Akrons | Tri-State League | Akron, OH | |
| Black | black-010--- | 1890 | Dubuque | Illinois-Iowa League | Dubuque, IA | ||
| Bob Black | black-002bob | 1890 | 4/26-9/30 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| R.W. Black | black-002r-- | 1890 | 4/4-5/27 | Austin Senators | Texas League | Austin, TX | |
| R.W. Black | black-002r-- | 1890 | 5/31-6/6 | Waco Babies | Texas League | Waco, TX | |
| Wilmer Black | black-006wil | 1890 | 4/30-5/9 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Blackinton | 1890 | Hoosic Falls | Alb&Ren | Hoosic Falls, NY | |||
| George Blackstock | blacks001geo | 1890 | Ishpeming | Independent | Ishpeming, MI | ||
| Amiel Blackwell | 1890 | Webb City | Independent | Webb City, MO | |||
| Blake | 1890 | 6/20 | Dubuque | Illinois-Iowa League | Dubuque, IA | ||
| Blake | 1890 | -8/ | Hoosic Falls | Alb&Ren | Hoosic Falls, NY | ||
| Harry Blake | blake-001har | 1890 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | ||
| Fred Blake/ie | 1890 | Fort Dodge | Independent | Fort Dodge, KS | |||
| Charles Blanchard | 1890 | Salt Lake City | Independent | Salt Lake City, UT | |||
| B.C. Blandy | blandy001b-- | 1890 | +5/15+ | Muncie | Indiana State League | Muncie, IN | |
| Philip Blansfield | blansf001phi | 1890 | 5/12-8/29+ | Utica | New York State League | Utica, NY | |
| Harvey Blauvelt | blauve001hen | 1890 | Penfield | Independent | Penfield, NY | ||
| Harvey Blauvelt | blauve001hen | 1890 | 6/22-6/29 | 2 g. | Rochester | American Association | Rochester, NY |
| Harvey Blauvelt | blauve001hen | 1890 | 7/8 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Ned Bligh | bligh-001ned | 1890 | 8 g. | Columbus | American Association | Columbus, OH | |
| Ned Bligh | bligh-001ned | 1890 | 24 g. | Louisville | American Association | Louisville, KY | |
| Bliss | 1890 | Norwich | semi pro | Norwich, CT | |||
| Wes Blogg | blogg-001wes | 1890 | Umpire | WestA | , | ||
| Joseph Bohannon | bohann001jos | 1890 | Little Rock | Independent | Little Rock, AR | ||
| Charlie Bohn | bohn--001cha | 1890 | 4/30 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Charlie Bohn | bohn--001cha | 1890 | 5/- | Elkhart | Indiana State League | Elkhart, IN | |
| Charlie Bohn | bohn--001cha | 1890 | Ishpeming | Independent | Ishpeming, MI | ||
| Paddy Bolan | bolan-001pat | 1890 | -6/13 | Flint Flyers | Michigan State League | Flint, MI | |
| Paddy Bolan | bolan-001pat | 1890 | +6/19-7/ | Peru | Indiana State League | Peru, IN | |
| Daniel Boland | boland001dan | 1890 | 5/1-9/ | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Bolmar | 1890 | Meadville | New York-Pennsylvania League | Meadville, PA | |||
| Frank Bonner | bonner001fra | 1890 | Plainfield | Independent | Plainfield, NJ | ||
| George Borchers | borche001geo | 1890 | 3/23-5/2 | Stockton | California League | Stockton, CA | |
| George Borchers | borche001geo | 1890 | 5/30-7/13 | Portland | Pacific Northwest League | Portland, OR | |
| George Borchers | borche001geo | 1890 | 7/26-10/8 | Spokane | Pacific Northwest League | Spokane, WA | |
| George Borchers | borche001geo | 1890 | 10/19 | Sacramento Senators | California League | Sacramento, CA | |
| Ed Borland | borlan001ed- | 1890 | 5/15-7/22 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Ed Borland | borlan001ed- | 1890 | 8/15-9/4 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Arthur Boseker | boseke000art | 1890 | 5/1-6/14+ | Bluffton | Indiana State League | Bluffton, IN | |
| J. Bothwell | 1890 | +9/27+ | Pullman YMCA | Independent | Pullman, IL | ||
| Billy Bottenus | botten001wil | 1890 | 5/1-7/5 | Toronto Canucks | International Association | Toronto, ON | |
| Billy Bottenus | botten001wil | 1890 | 7/30-8/13 | Hartford | Atlantic Association | Hartford, CT | |
| Thomas Bowen | bowen-016--- | 1890 | 5/12-5/30+ | Albany | New York State League | Albany, NY | |
| Frank Bowerman | bowerm001fra | 1890 | -6/ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Charles Bowers | bowers003cha | 1890 | Sioux City Corn Huskers | Western Association | Sioux City, IA | ||
| Frank Bowes | bowes-001fra | 1890 | 4/17-8/25 | 61 g. | Brooklyn | American Association | Brooklyn, NY |
| Bill Bowman | bowman001bil | 1890 | 3/23-11/23 | Sacramento Senators | California League | Sacramento, CA | |
| Sumner Bowman | bowman001sum | 1890 | 6/11- | 1 g. | Philadelphia | National League | Philadelphia, PA |
| Sumner Bowman | bowman001sum | 1890 | 10 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Sumner Bowman | bowman001sum | 1890 | 8/5 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Boyd | 1890 | no g. | McKeesport | Tri-State League | McKeesport, PA | ||
| Boyd | boyd--050--- | 1890 | +8/31+ | Chicago Garden Citys | Chicago City League | Chicago, IL | |
| Ben Boyd | boyd--001ben | 1890 | 5/1-6/11 | York Monarchs | Eastern Interstate League | York, PA | |
| Ben Boyd | boyd--001ben | 1890 | 9 g. | Cuban Giants | Independent | Cuban, | |
| Frank Boyd | boyd--002fra | 1890 | +5/27-9/9 | Erie | New York-Pennsylvania League | Erie, PA | |
| Eddie Boyle | 1890 | no g. | London Tecumsehs | International Association | London, ON | ||
| Jack Boyle | boyle-001jac | 1890 | 100 g. | Chicago | Players League | Chicago, IL | |
| Brace | brace-001--- | 1890 | St. Louis Browns | American Association | St. Louis, MO | ||
| George Brackett | bracke001geo | 1890 | by 7/2-8/9 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Bradley | bradle021--- | 1890 | 7/9-7/14 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Bradley | 1890 | 7/16-7/17 | Hazleton | MidSts | Hazleton, PA | ||
| George Bradley | bradle002geo | 1890 | 6/7-7/5 | Easton | Eastern Interstate League | Easton, PA | |
| Michael Bradley | bradle004mic | 1890 | 4/19-5/7 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Reddy Bradley | bradle000red | 1890 | 6/23-9/11 | Cobleskill | New York State League | Cobleskill, NY | |
| William Bradley | bradle005wil | 1890 | 6/12-7/5 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| William Bradley | bradle005wil | 1890 | 6/13-6/14 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Charles Brady | brady-002cha | 1890 | 4/19-4/23 | New Haven | Atlantic Association | New Haven, CT | |
| Charles Brady | brady-002cha | 1890 | 5/10-7/19 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Charles Brady | brady-002cha | 1890 | 7/23-9/30 | Albany | New York State League | Albany, NY | |
| Steve Brady | brady-002ste | 1890 | 4/19-4/21 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Thomas Braham | braham001tho | 1890 | 5/1-9/21+ | Troy | New York State League | Troy, NY | |
| Howard Brandenburg | brande001how | 1890 | 5/1-6/25+ | Bluffton | Indiana State League | Bluffton, IN | |
| Howard Brandenburg | brande001how | 1890 | 6/- | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Howard Brandenburg | brande001how | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| Billy Bray | bray--002wil | 1890 | 5/3-5/18 | Portland | Pacific Northwest League | Portland, OR | |
| Billy Bray | bray--002wil | 1890 | McMinnville | s-p | McMinnville, OR | ||
| Edwin Breckenridge | brecke002edw | 1890 | 4/29-8/15 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Edwin Breckenridge | brecke002edw | 1890 | 7 g. | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Edwin Breckenridge | brecke002edw | 1890 | 9/7-10/12 | Portland | Pacific Northwest League | Portland, OR | |
| Jack Brennan | brenna002jac | 1890 | 59 g. | Cleveland | Players League | Cleveland, OH | |
| Charles Brewer | 1890 | Ogdensburg | Independent | Ogdensburg, NY | |||
| Joe Brewer | brewer001joe | 1890 | 4/30-7/8 | Dayton Reds | Tri-State League | Dayton, OH | |
| C. A. Briggs | briggs002c-- | 1890 | -6/10 | Lansing | Michigan State League | Lansing, MI | |
| George Briggs | briggs001geo | 1890 | 5/2-8/9 | Ottawa | Illinois-Iowa League | Ottawa, IL | |
| Grant Briggs | briggs001gra | 1890 | 4/17-10/12 | 86 g. | Syracuse | American Association | Syracuse, NY |
| George Bright | bright001geo | 1890 | 5/3-9/14 | Seattle | Pacific Northwest League | Seattle, WA | |
| Frank Brill | brill-001fra | 1890 | 5/1-5/17 | Easton | Eastern Interstate League | Easton, PA | |
| W.H. Brimblecomb | brimbl001w-- | 1890 | 4/17-8/10 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| W.H. Brimblecomb | brimbl001w-- | 1890 | 8/12-9/29 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| George Bristow | bristo002geo | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Thomas Bristow | 1890 | no g. | Meadville | New York-Pennsylvania League | Meadville, PA | ||
| William Bristow | bristo001wil | 1890 | 5/1-7/17 | Joliet | Illinois-Iowa League | Joliet, IL | |
| W. Brittan | britta001w-- | 1890 | 5/3-8/20 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| W. Brittan | britta001w-- | 1890 | Oakland Colonels | California League | Oakland, CA | ||
| Joseph Broderick | broder001jos | 1890 | 4/29-5/7 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Joseph Broderick | broder001jos | 1890 | 5/14-6/8 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Joseph Broderick | broder001jos | 1890 | 6/12-6/14 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Joseph Broderick | broder001jos | 1890 | 7/1 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Steve Brodie | brodie001wal | 1890 | 4/21- | 132 g. | Boston | National League | Boston, MA |
| Timothy Brosnan | brosna001tim | 1890 | 4/18-9/30 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Cal Broughton | brough001cal | 1890 | 4/17-8/14 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Cal Broughton | brough001cal | 1890 | 9/17-10/12 | Seattle | Pacific Northwest League | Seattle, WA | |
| Dan Brouthers | brouth001den | 1890 | 126 g. | Boston | Players League | Boston, MA | |
| Jim Brouthers | brouth001jam | 1890 | +5/15-8/1+ | Albany | New York State League | Albany, NY | |
| Jim Brouthers | brouth001jam | 1890 | 8/8-8/15+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Brown | 1890 | -3/ | San Francisco Pioneers | CaWinter | San Francisco, CA | ||
| Brown | brown-253--- | 1890 | +6/24+ | Elkhart | Indiana State League | Elkhart, IN | |
| Brown | brown-254--- | 1890 | 6/30 | Utica | New York State League | Utica, NY | |
| Dan Brown | 1890 | Ogdensburg | Independent | Ogdensburg, NY | |||
| Marshall Brown | brown-007mar | 1890 | 5/2-7/5 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay City, MI | |
| Marshall Brown | brown-007mar | 1890 | +7/23-9/28+ | Utica | New York State League | Utica, NY | |
| Nich Brown | brown-003nic | 1890 | 5/1-6/ | Peru | Indiana State League | Peru, IN | |
| Tom Brown | brown-012tho | 1890 | 131 g. | Boston | Players League | Boston, MA | |
| William Brown | brown-027wil | 1890 | 60 g. | New York | Players League | New York, NY | |
| George Brownell | browne003geo | 1890 | 5/30-5/31 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| George Brownell | browne003geo | 1890 | 7/4-7/31 | Akron Akrons | Tri-State League | Akron, OH | |
| William Browner | browne003wil | 1890 | 5/1-5/ | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| William Browner | browne003wil | 1890 | 5/- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| William Browner | browne003wil | 1890 | 8/- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | |
| William Browner | browne003wil | 1890 | 9/1- | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Pete Browning | browni001pet | 1890 | 118 g. | Cleveland | Players League | Cleveland, OH | |
| Kid Bruner | bruner001kid | 1890 | Monmouth | Illinois-Iowa League | Monmouth, IL | ||
| Benjamin Brunnell | brunne000ben | 1890 | 5/15-6/2 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Thomas Bruton | bruton001tho | 1890 | +6/24-7/ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Thomas Bruton | bruton001tho | 1890 | +8/8-9/28+ | Utica | New York State League | Utica, NY | |
| Tod Brynan | brynan001tod | 1890 | +7/21-8/14+ | Bradford | New York-Pennsylvania League | Bradford, PA | |
| John Buchan | buchan003joh | 1890 | 3/23-7/11 | San Francisco Haverlys | California League | San Francisco, CA | |
| Frank Buchtel | buchte000fra | 1890 | 5/3-10/12 | Portland | Pacific Northwest League | Portland, OR | |
| Al Buckenberger | bucken001al- | 1890 | Columbus | American Association | Columbus, OH | ||
| Buckley | buckle009--- | 1890 | 5/30-6/4 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Dick Buckley | buckle001dic | 1890 | 70 g. | New York | National League | New York, NY | |
| John Buckley | buckle003joh | 1890 | +5/13+ | Joliet | Illinois-Iowa League | Joliet, IL | |
| John Buckley | buckle003joh | 1890 | 7/15-7/25 | 4 g. | Buffalo | Players League | Buffalo, NY |
| John Buckley | buckle003joh | 1890 | 7/- | Oneonta | New York State League | Oneonta, NY | |
| Tom Buckley | buckle001tom | 1890 | 4/19 | Sacramento Senators | California League | Sacramento, CA | |
| Jay Budd | budd--001--- | 1890 | Cleveland Champs | Independent | Cleveland, OH | ||
| Jay Budd | budd--001--- | 1890 | 9/10 | 1 g. | Cleveland | Players League | Cleveland, OH |
| Charlie Buffinton | buffin001cha | 1890 | 42 g. | Philadelphia | Players League | Philadelphia, PA | |
| Sim Bullas | bullas001sim | 1890 | Derby | British National Baseball League | Derby, England | ||
| Bullock | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| Ernie Burch | burch-001ern | 1890 | 4/29-8/9 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Roxy Burchard | burcha001g-- | 1890 | 6/20-7/1 | Springfield | Tri-State League | Springfield, OH | |
| Bill Burdick | burdic001bil | 1890 | 4/18-7/19 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Jack Burdock | burdoc001jac | 1890 | 4/23-7/3 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Jack Burdock | burdoc001jac | 1890 | 7/21-? | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Dan Burke | burke-001dan | 1890 | 4/18- | 32 g. | Rochester | American Association | Rochester, NY |
| Dan Burke | burke-001dan | 1890 | 9 g. | Syracuse | American Association | Syracuse, NY | |
| Eddie Burke | burke-002edd | 1890 | 4/19- | 100 g. | Philadelphia | National League | Philadelphia, PA |
| Eddie Burke | burke-002edd | 1890 | 31 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Joe Burke | burke-004joe | 1890 | 4/30-5/17 | Dayton Reds | Tri-State League | Dayton, OH | |
| Joe Burke | burke-004joe | 1890 | +5/20+ | Muncie | Indiana State League | Muncie, IN | |
| Joe Burke | burke-002joe | 1890 | 9/26 | 2 g. | St. Louis Browns | American Association | St. Louis, MO |
| John Burke | burke-008joh | 1890 | 5/2-5/31 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| John Burke | burke-008joh | 1890 | 6/4-6/11 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| John Burke | burke-008joh | 1890 | 6/14-7/5 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| John Burke | burke-008joh | 1890 | +8/2-9/15 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| John Burke | burke-008joh | 1890 | -9/15 | 42 g. | Jamestown | New York-Pennsylvania League | Jamestown, NY |
| Thomas Burke | burke-005tho | 1890 | 5/1 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| William Burke | burke-007wil | 1890 | 5/7-6/5 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| William Burke | burke-007wil | 1890 | 6/12-7/4 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| William Burke | burke-007wil | 1890 | 7/26-9/17 | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Jesse Burkett | burket001jes | 1890 | 4/22- | 101 g. | New York | National League | New York, NY |
| Robert Burks | burks-001rob | 1890 | 4/17-7/16 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Robert Burks | burks-001rob | 1890 | 8/10-10/12 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| B. F. Burnell | 1890 | Meadville | New York-Pennsylvania League | Meadville, PA | |||
| Hercules Burnett | burnet003her | 1890 | 4/29-7/8 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Hercules Burnett | burnet003her | 1890 | 7/13-8/15 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Walter Burnham | burnha002wal | 1890 | 4/19-9/30 | New Haven | Atlantic Association | New Haven, CT | |
| Burns | burns-064--- | 1890 | 7/4 | Hartford | Atlantic Association | Hartford, CT | |
| Dick Burns | burns-001dic | 1890 | 5/21 | Hartford | Atlantic Association | Hartford, CT | |
| Henry Burns | burns-002hen | 1890 | 4/19-6/23 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Henry Burns | burns-002hen | 1890 | Nashua | Independent | Nashua, NH | ||
| James Burns | 1890 | Philadelphia | American Association | Philadelphia, PA | |||
| Jim Burns | burns-001jim | 1890 | 4/18-9/14 | Kansas City Blues | Western Association | Kansas City, MO | |
| John Burns | burns-021joh | 1890 | 5/12-6/17+ | Oneonta | New York State League | Oneonta, NY | |
| John Burns | burns-021joh | 1890 | +8/12-9/23+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Pete Burns | burns-001pet | 1890 | Chicago Unions | Independent | Chicago, IL | ||
| Thomas Burns | burns-001oys | 1890 | 119 g. | Brooklyn | National League | Brooklyn, NY | |
| Tom Burns | burns-001tom | 1890 | 139 g. | Chicago | National League | Chicago, IL | |
| Louis Burquin | burqui001lou | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| Charles Burrell | burrel000cha | 1890 | +5/13+ | Anderson | Indiana State League | Anderson, IN | |
| Charles Burrell | burrel000cha | 1890 | 6/27+ | Albany | New York State League | Albany, NY | |
| Charles Burrell | burrel000cha | 1890 | 8/?-9/22+ | Canisteo | WNYSt | Canisteo, NY | |
| Harry Burrell | burrel001har | 1890 | 5/1- | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Harry Burrell | burrel001har | 1890 | Fort Dodge | Fort Dodge, KS | |||
| Burton | burton009--- | 1890 | London Tecumsehs | International Association | London, ON | ||
| Clem Buschman | buschm001cle | 1890 | 4/30-8/17 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Clem Buschman | buschm001cle | 1890 | 8/- | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Doc Bushong | bushon001doc | 1890 | 16 g. | Brooklyn | National League | Brooklyn, NY | |
| Benjamin Butler | butler001ben | 1890 | New York Gorhams | Independent | New York, NY | ||
| Steve Butler | butler002ste | 1890 | Chicago | ChicCity | Chicago, IL | ||
| Charlie Cady | cady--001cha | 1890 | +8/31+ | Chicago Rivals | Chicago City League | Chicago, IL | |
| Frank Cahill | cahill000f-- | 1890 | 5/13 - 7/18 | Portland | Pacific Northwest League | Portland, OR | |
| Frank Cahill | cahill000f-- | 1890 | 8/5 - 9/2 | Helena | Independent | Helena, MT | |
| Frank Cahill | cahill000f-- | 1890 | Salt Lake City | Independent | Salt Lake City, UT | ||
| J. C. Cahill | cahill005--- | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| J. C. Cahill | cahill005--- | 1890 | Kokomo | Indiana State League | Kokomo, IN | ||
| J. C. Cahill | cahill005--- | 1890 | 5/- rel.6/9 | Joliet | Illinois-Iowa League | Joliet, IL | |
| J. C. Cahill | cahill005--- | 1890 | 6/11 | Aurora | Illinois-Iowa League | Aurora, IL | |
| John Cahill | cahill006joh | 1890 | -3/ | San Francisco Pioneers | CaWinter | San Francisco, CA | |
| John Cahill | cahill006joh | 1890 | 4/4-8/30 | Stockton | California League | Stockton, CA | |
| John Cahill | cahill006joh | 1890 | 9/6-10/12 | Portland | Pacific Northwest League | Portland, OR | |
| John Cahill | cahill006joh | 1890 | 11/7-11/8 | Stockton | California League | Stockton, CA | |
| John Cahill | cahill006joh | 1890 | 11/13-11/14 | Sacramento Senators | California League | Sacramento, CA | |
| Tom Cahill | cahill001tom | 1890 | U. of Pennsylvania | College | , | ||
| Tom Cahill | cahill001tom | 1890 | 6/16-9/30 | New Haven | Atlantic Association | New Haven, CT | |
| Cain | cain--012--- | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| George Cain | cain--002geo | 1890 | 4/4-6/2 | Dallas Hams | Texas League | Dallas, TX | |
| George Cain | cain--002geo | 1890 | 6/7-6/12 | Joliet | Illinois-Iowa League | Joliet, IL | |
| George Cain | cain--002geo | 1890 | 7/8-8/17 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| George Cain | cain--002geo | 1890 | -9/26 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| John Cake | cake--001jos | 1890 | U. of Pennsylvania | College | , | ||
| John Calford | calfor001--- | 1890 | 5/19-5/22 | London Tecumsehs | International Association | London, ON | |
| Calhoun | 1890 | Salt Lake City | Independent | Salt Lake City, UT | |||
| Charles Calhoun | calhou002cha | 1890 | 4/30-7/4 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Tom Calihan | callah001tho | 1890 | 13 g. | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Tom Calihan | callah001tho | 1890 | 56 g. | Olean | New York-Pennsylvania League | Olean, NY | |
| Will Calihan | caliha001wil | 1890 | 4/17-9/13 | 48 g. | Rochester | American Association | Rochester, NY |
| Kid Camp | camp--001kid | 1890 | 5/5-10/12 | Seattle | Pacific Northwest League | Seattle, WA | |
| Lew Camp | camp--001lew | 1890 | 5/3-8/13 | Seattle | Pacific Northwest League | Seattle, WA | |
| John Campana | campan000--- | 1890 | +6/11-7/23 | Utica | New York State League | Utica, NY | |
| Count Campau | campau001cha | 1890 | 5/1-6/23 | Detroit Wolverines | International Association | Detroit, MI | |
| Count Campau | campau001cha | 1890 | 6/26-10/4 | 75 g. | St. Louis Browns | American Association | St. Louis, MO |
| Campbell | campbe052--- | 1890 | 5/1-5/10 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Daniel Campbell | 1890 | 5/2-6/13 | Umpire | EIntSt | , | ||
| Daniel Campbell | 1890 | 9/3 | MLB Umpire | American Association | , | ||
| Frank Campbell | 1890 | Boston | Independent | Boston, MA | |||
| Grant Campbell | 1890 | Chicago Unions | Independent | Chicago, IL | |||
| Hugh Campbell | campbe002hug | 1890 | Missoula | Independent | Missoula, MT | ||
| Jack Campbell | 1890 | Indianapolis | Independent | Indianapolis, IN | |||
| Joe Campbell | 1890 | Chicago Unions | Independent | Chicago, IL | |||
| Sam Campbell | campbe001sam | 1890 | 10/11 | 2 g. | Philadelphia | American Association | Philadelphia, PA |
| Campfield | 1890 | Elkton | Independent | Elkton, MD | |||
| Sal Campfield | campfi001sal | 1890 | +6/2+ | Meadville | New York-Pennsylvania League | Meadville, PA | |
| William Campion | campio002wil | 1890 | 4/19-7/28 | Worcester Grays | Atlantic Association | Worcester, MA | |
| William Campion | campio002wil | 1890 | 8/5-8/13 | Hartford | Atlantic Association | Hartford, CT | |
| William Campion | campio002wil | 1890 | 8/18-9/30 | Lebanon | Atlantic Association | Lebanon, PA | |
| Jim Canavan | canava001jim | 1890 | 4/17-9/29 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Ben Canfield | 1890 | Ogdensburg | Independent | Ogdensburg, NY | |||
| Joe Cantillon | cantil001jos | 1890 | 4/17-5/23 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Joe Cantillon | cantil001jos | 1890 | 6/4-8/9 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Joe Cantillon | cantil001jos | 1890 | 8/16-11/23 | Oakland Colonels | California League | Oakland, CA | |
| Cantlon | cantlo000--- | 1890 | Hackett-Carhart | Independent | , | ||
| Cantlon | cantlo000--- | 1890 | 5/22-5/23 | Albany | New York State League | Albany, NY | |
| Cantlon | cantlo000--- | 1890 | +6/16-8/21+ | Oneonta | New York State League | Oneonta, NY | |
| Bart Cantz | cantz-001bar | 1890 | 5 g. | Philadelphia | American Association | Philadelphia, PA | |
| John Carbine | carbin001joh | 1890 | +8/31+ | Chicago Franklins | Chicago City League | Chicago, IL | |
| Alexander Cardno | 1890 | +5/2-5/5+ | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | ||
| Alexander Cardno | 1890 | Grand Forks | Independent | Grand Forks, ND | |||
| John Carey | carey-003joh | 1890 | 5/1-9/24 | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Roger Carey | carey-001rog | 1890 | 4/4-6/1 | Austin Senators | Texas League | Austin, TX | |
| Roger Carey | carey-001rog | 1890 | 6/9-6/14 | Akron Akrons | Tri-State League | Akron, OH | |
| William Carey | carey-006wil | 1890 | 5/27-7/5 | Easton | Eastern Interstate League | Easton, PA | |
| Ed Carfrey | carfre001ed- | 1890 | 4/19 | 1 g. | Philadelphia | American Association | Philadelphia, PA |
| Bobby Cargo | cargo-001bob | 1890 | Pittsburgh East End Gym | Independent | Pittsburgh, PA | ||
| Bobby Cargo | cargo-001bob | 1890 | 5/15 | Easton | Eastern Interstate League | Easton, PA | |
| Bobby Cargo | cargo-001bob | 1890 | +8/20+ | Pittsburgh Acmes | Independent | Pittsburgh, PA | |
| George Cargo | 1890 | +8/20+ | Pittsburgh Acmes | Independent | Pittsburgh, PA | ||
| Fred Carl | carl--001fre | 1890 | 4/19-5/15 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Fred Carl | carl--001fre | 1890 | 5/17-8/7 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Frank Carlin | carlin001fra | 1890 | -6/ | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Frank Carlin | carlin001fra | 1890 | 6/- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Frank Carlin | carlin001fra | 1890 | +8/31+ | Chicago Brands | Chicago City League | Chicago, IL | |
| John Carlin | carlin002joh | 1890 | Newark Stars | Independent | Newark, NJ | ||
| John Carlin | carlin002joh | 1890 | +6/27-9/23+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| George Carman | carman001geo | 1890 | 5/1-7/4 | Easton | Eastern Interstate League | Easton, PA | |
| George Carman | carman001geo | 1890 | 7/11-7/21 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| George Carman | carman001geo | 1890 | 7/22-7/26 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| George Carman | carman001geo | 1890 | 9/4-10/12 | 27 g. | Philadelphia | American Association | Philadelphia, PA |
| Jack Carney | carney002joh | 1890 | 28 g. | Buffalo | Players League | Buffalo, NY | |
| Jack Carney | carney002joh | 1890 | 25 g. | Cleveland | Players League | Cleveland, OH | |
| P. H. Carney | 1890 | no g. | Springfield | Springfield, MA | |||
| Alexander Carno | carno-001ale | 1890 | 5/2- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Carpenter | 1890 | +9/22+ | Wellsville | WNYSt | Wellsville, NY | ||
| Dave Carpenter | carpen002dav | 1890 | Elkhart | Indiana State League | Elkhart, IN | ||
| Hick Carpenter | carpen001hic | 1890 | 4/26-9/29 | Kansas City Blues | Western Association | Kansas City, MO | |
| W. Carpenter | carpen001w-- | 1890 | 5/21-8/14+ | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Ed Carr | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| John Carr | carr--008joh | 1890 | 4/30-6/21 | Canton Nadjys | Tri-State League | Canton, OH | |
| John Carr | carr--008joh | 1890 | 6/24 | Dayton Reds | Tri-State League | Dayton, OH | |
| Cliff Carroll | carrol002cli | 1890 | 136 g. | Chicago | National League | Chicago, IL | |
| Frank Carroll | carrol003fra | 1890 | 5/-9/23 | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Fred Carroll | carrol001fre | 1890 | 111 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| Fred Carroll | carrol001fre | 1890 | Umpire | Calif | , | ||
| John Carroll | carrol001scr | 1890 | 4/17-9/30 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Kid Carsey | carsey001wil | 1890 | Oakland Colonels | California League | Oakland, CA | ||
| Carson | carson015--- | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Ed Cartwright | cartwr001ed- | 1890 | 5/1-6/21 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Ed Cartwright | cartwr001ed- | 1890 | 6/23-7/7 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| Ed Cartwright | cartwr001ed- | 1890 | 7/10-10/14 | 75 g. | St. Louis Browns | American Association | St. Louis, MO |
| Bob Caruthers | caruth001bob | 1890 | 71 g. | Brooklyn | National League | Brooklyn, NY | |
| Eugene Case | case--014--- | 1890 | 5/12-7/9+ | Oneonta | New York State League | Oneonta, NY | |
| Eugene Case | case--014--- | 1890 | +9/22+ | Canisteo | WNYSt | Canisteo, NY | |
| John Case | case--000joh | 1890 | -9/30 | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Casey | 1890 | Peru | Indiana State League | Peru, IN | |||
| Casey | 1890 | Indianapolis | Independent | Indianapolis, IN | |||
| C. Casey | 1890 | Hoosic Falls | Alb&Ren | Hoosic Falls, NY | |||
| Dan Casey | casey-002dan | 1890 | 46 g. | Syracuse | American Association | Syracuse, NY | |
| Dennis Casey | casey-002den | 1890 | 5/1-6/21 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Dennis Casey | casey-002den | 1890 | 5/23-7/5 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| Dennis Casey | casey-002den | 1890 | +8/2-9/10 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Dennis Casey | casey-002den | 1890 | -9/10 | 48g. | Jamestown | New York-Pennsylvania League | Jamestown, NY |
| Will Casey | 1890 | Hoosic Falls | Alb&Ren | Hoosic Falls, NY | |||
| Ed Cassian | cassia001ed- | 1890 | 8/14 | Albany | New York State League | Albany, NY | |
| William Cassiboine | cassib001wil | 1890 | U. of Wisconsin | College | , | ||
| William Cassiboine | cassib001wil | 1890 | +6/28+ | Joliet | Illinois-Iowa League | Joliet, IL | |
| William Castone | caston001wil | 1890 | Lincoln Giants | Independent | Lincoln, NE | ||
| Harry Castor | castor000har | 1890 | 5/1- | Peru | Indiana State League | Peru, IN | |
| Elmer Cates | cates-001elm | 1890 | 5/1-6/14+ | Bluffton | Indiana State League | Bluffton, IN | |
| Elmer Cates | cates-001elm | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Elmer Cates | cates-001elm | 1890 | Muncie | Indiana State League | Muncie, IN | ||
| L. L. Caulk | 1890 | Marion/Logansport | Indiana State League | Marion, IN | |||
| Cavanaugh | 1890 | Lansingburg | Alb&Ren | Lansingburg, | |||
| Cavanaugh | cavana001--- | 1890 | 4/19 | Sacramento Senators | California League | Sacramento, CA | |
| E. Cavanaugh | cavana001e-- | 1890 | 1 g. | Sacramento Senators | California League | Sacramento, CA | |
| Thomas Cavanaugh | cavana002tho | 1890 | 5/12-6/26+ | Albany | New York State League | Albany, NY | |
| C. J. Chacard | 1890 | Albany | New York State League | Albany, NY | |||
| Benjamin Chadwick | chadwi001ben | 1890 | 5/24-7/5 | Easton | Eastern Interstate League | Easton, PA | |
| Benjamin Chadwick | chadwi001ben | 1890 | 8/13-8/16 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Clarence Chalker | chalke001cla | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| Ice Box Chamberlain | chambe001ice | 1890 | 5 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Ice Box Chamberlain | chambe001ice | 1890 | 25 g. | Columbus | American Association | Columbus, OH | |
| Jack Chapman | chapma002jac | 1890 | Louisville | American Association | Louisville, KY | ||
| Charles Chase | chase-002cha | 1890 | 4/13-4/26 | Stockton | California League | Stockton, CA | |
| Charles Chase | chase-002cha | 1890 | 5/2-5/21 | Springfield | Tri-State League | Springfield, OH | |
| Charles Chase | chase-002cha | 1890 | 6/15 | Sacramento Senators | California League | Sacramento, CA | |
| Charles Chase | chase-002cha | 1890 | 7/13-7/20 | San Francisco Haverlys | California League | San Francisco, CA | |
| Charles Chase | chase-002cha | 1890 | 11/15-11/23 | Stockton | California League | Stockton, CA | |
| William Cherry | cherry000bil | 1890 | Fort Wayne | Amat | Fort Wayne, IN | ||
| Frank Chilcott | chilco001fra | 1890 | Buffalo Socials | Independent | Buffalo, NY | ||
| Cupid Childs | childs001cla | 1890 | 4/17- | 126 g. | Syracuse | American Association | Syracuse, NY |
| Robert Childs | childs002rob | 1890 | 5/7-9/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| H.B. Chrisman | chrism001h-- | 1890 | 5/3-6/19 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Hi Church | church001hi- | 1890 | Syracuse Univ. | College | , | ||
| Hi Church | church001hi- | 1890 | 7/8-7/23 | Utica | New York State League | Utica, NY | |
| Hi Church | church001hi- | 1890 | 8/23-8/25 | 3 g. | Brooklyn | American Association | Brooklyn, NY |
| Charles Clancy | clancy002cha | 1890 | 5/1- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Charles Clancy | clancy002cha | 1890 | Umpire | Il-Ia | , | ||
| Clare | clare-003--- | 1890 | 6/6 | Akron Akrons | Tri-State League | Akron, OH | |
| Daniel Clare | clare-001dan | 1890 | 4/18-8/10 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Daniel Clare | clare-001dan | 1890 | 8/12-9/1 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| William Clare | clare-001wil | 1890 | +5/15-9/1+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Bob Clark | clark-001bob | 1890 | 43 g. | Brooklyn | National League | Brooklyn, NY | |
| Spider Clark | clark-001spi | 1890 | 69 g. | Buffalo | Players League | Buffalo, NY | |
| Artie Clarke | clarke001art | 1890 | 4/19- | 101 g. | New York | National League | New York, NY |
| Dad Clarke | clarke001dad | 1890 | 4/17-9/10 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| William Clarke | clarke004wil | 1890 | 5/1-9/26 | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Dad Clarkson | clarks001dad | 1890 | 7/4-7/17 | St. Paul Apostles | Western Association | St. Paul, MN | |
| John Clarkson | clarks001joh | 1890 | 45 g. | Boston | National League | Boston, MA | |
| Fritz Clausen | clause001fri | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| Fritz Clausen | clause001fri | 1890 | Monmouth | Illinois-Iowa League | Monmouth, IL | ||
| Fritz Clausen | clause001fri | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | ||
| Fred Clement | clemen001ed- | 1890 | Songer | Independent | Songer, | ||
| Fred Clement | clemen001ed- | 1890 | 6/24 | 1 g. | Pittsburgh | National League | Pittsburgh, PA |
| Fred Clement | clemen001ed- | 1890 | , | ||||
| Jack Clements | clemen001jac | 1890 | 97 g. | Philadelphia | National League | Philadelphia, PA | |
| George Cleve | cleve-001geo | 1890 | 4/30-5/31 | Mansfield | Tri-State League | Mansfield, OH | |
| Elmer Cleveland | clevel001elm | 1890 | 4/17-9/26 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Cline | 1890 | 4/29- | Quincy Ravens | Central Interstate League | Quincy, IL | ||
| Edward Cline | 1890 | Canton Nadjys | Independent | Canton, OH | |||
| Frank Cline | cline-001fra | 1890 | 4/30-7/4 | Canton Nadjys | Tri-State League | Canton, OH | |
| Frank Cline | cline-001fra | 1890 | 7/10-8/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Monk Cline | cline-001mon | 1890 | 4/18-7/24 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Monk Cline | cline-001mon | 1890 | 7/30-8/14 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Monk Cline | cline-001mon | 1890 | 8/19-9/29 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| Billy Clingman | clingm001wil | 1890 | 5/22-8/2 | Mansfield | Tri-State League | Mansfield, OH | |
| Billy Clingman | clingm001wil | 1890 | 8/11-8/21+ | Oneonta | New York State League | Oneonta, NY | |
| Billy Clingman | clingm001wil | 1890 | Cincinnati Shamrocks | Independent | Cincinnati, OH | ||
| Billy Clingman | clingm001wil | 1890 | 9/9- | 7 g. | Cincinnati | National League | Cincinnati, OH |
| T.J. Coakley | coakle001t-- | 1890 | 5/12-6/17+ | Oneonta | New York State League | Oneonta, NY | |
| George Cobb | cobb--003geo | 1890 | 4/3-11/23 | Oakland Colonels | California League | Oakland, CA | |
| Cochard | cochar002--- | 1890 | 7/9-7/24 | Albany | New York State League | Albany, NY | |
| Cockman | cockma002--- | 1890 | +5/15-5/19+ | Elkhart | Indiana State League | Elkhart, IN | |
| M.F. Cody | cody--001m-- | 1890 | Muskegon | Michigan State League | Muskegon, MI | ||
| M.F. Cody | cody--001m-- | 1890 | 7/2- | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Michael Cody | cody--001mic | 1890 | 4/30-8/9 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Michael Cody | cody--001mic | 1890 | 8/20-9/15 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Cogswell | 1890 | 5/1- | Burlington Hawkeyes | Central Interstate League | Burlington, IA | ||
| Daniel Colbar | 1890 | Johnstown-Gloversville | New York State League | Gloversville, NY | |||
| Archie Cole | cole--001arc | 1890 | 4/29-8/15 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Archie Cole | cole--001arc | 1890 | -9/24 | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| John Coleman | colema002joh | 1890 | 5/1-7/5 | Toronto Canucks | International Association | Toronto, ON | |
| John Coleman | colema002joh | 1890 | -7/18 | 3 g. | Pittsburgh | National League | Pittsburgh, PA |
| John Coleman | colema003joh | 1890 | 6/23 | 1 g. | Philadelphia | National League | Philadelphia, PA |
| John Coleman | colema003joh | 1890s | Bristol | Independent | Bristol, PA | ||
| Robert Coleman | 1890s | Bristol | Independent | Bristol, PA | |||
| Colfer | 1890 | , | |||||
| Billy Colgan | colgan001ed- | 1890 | 5/3-10/12 | Spokane | Pacific Northwest League | Spokane, WA | |
| Leon Collier | collie001leo | 1890 | 5/1- | Ottawa | Illinois-Iowa League | Ottawa, IL | |
| Collins | collin044--- | 1890 | 4/30-5/10 | Canton Nadjys | Tri-State League | Canton, OH | |
| Collins | collin012--- | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | ||
| Collins | collin089--- | 1890 | 7/11+ | Troy | New York State League | Troy, NY | |
| Bill Collins | collin001bil | 1890 | 4/18 | 1 g. | Philadelphia | American Association | Philadelphia, PA |
| Bill Collins | collin001bil | 1890 | 5/1- | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Bill Collins | collin001bil | 1890 | 5/10-5/17 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Chub Collins | collin001chu | 1890 | 5/1-5/8 | Umpire | Int | , | |
| Chub Collins | collin001chu | 1890 | Toronto Canucks | International Association | Toronto, ON | ||
| Chub Collins | collin001chu | 1890 | 6/23-7/6 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Chub Collins | collin001chu | 1890 | Dundas | Independent | Dundas, ON | ||
| Hub Collins | collin001hub | 1890 | 129 g. | Brooklyn | National League | Brooklyn, NY | |
| Jim Collopy | collop001jam | 1890 | +6/2-9/15 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Charlie Comiskey | comisk001cha | 1890 | 88 g. | Chicago | Players League | Chicago, IL | |
| James Conahan | conaha001jam | 1890 | 6/12-7/5 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Peter Condoff | condof001pet | 1890 | West Haven | Independent | West Haven, CT | ||
| Conklin | conkli005--- | 1890 | +6/2-6/5+ | Albany | New York State League | Albany, NY | |
| Alphonse Conley | conley002alp | 1890 | 4/29-5/27 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Alphonse Conley | conley002alp | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| Alphonse Conley | conley002alp | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| Josh Conley | conley001cla | 1890 | 5/1-5/13+ | Anderson | Indiana State League | Anderson, IN | |
| Josh Conley | conley001cla | 1890 | -7/14 | Joliet | Illinois-Iowa League | Joliet, IL | |
| Josh Conley | conley001cla | 1890 | Meadville | New York-Pennsylvania League | Meadville, PA | ||
| Josh Conley | conley001cla | 1890 | 9 g. | Anderson | Indiana State League | Anderson, IN | |
| Josh Conley | conley001cla | 1890 | +8/8+ | Utica | New York State League | Utica, NY | |
| Josh Conley | conley001cla | 1890 | +9/22+ | Canisteo | WNYSt | Canisteo, NY | |
| Conlon | 1890 | +9/22+ | Canisteo | WNYSt | Canisteo, NY | ||
| Ollie Conn | conn--001oli | 1890 | 6/- | Marion/Logansport | Indiana State League | Marion, IN | |
| Ollie Conn | conn--001oli | 1890 | 6/- | Peru | Indiana State League | Peru, IN | |
| Connell | connel036--- | 1890 | 5/21-5/24 | Albany | New York State League | Albany, NY | |
| Peter Connell | connel001pet | 1890 | 4/17- | 11 g. | Brooklyn | American Association | Brooklyn, NY |
| Peter Connell | connel001pet | 1890 | Albany | New York State League | Albany, NY | ||
| Peter Connell | connel001pet | 1890 | New England | New England, | |||
| Connor | connor033--- | 1890 | 6/9-6/28 | Detroit Wolverines | International Association | Detroit, MI | |
| Connor | 1890 | 57 g. | Cobleskill | New York State League | Cobleskill, NY | ||
| Connor | 1890 | +9/22+ | Canisteo | WNYSt | Canisteo, NY | ||
| Jim Connor | connor001jim | 1890 | 5/2-5/31 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| Jim Connor | connor001jim | 1890 | 6/4-6/11 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| Jim Connor | connor001jim | 1890 | 6/16-7/7 | London Tecumsehs | International Association | London, ON | |
| Jim Connor | connor001jim | 1890 | 34 g. | Olean | New York-Pennsylvania League | Olean, NY | |
| Jim Connor | connor001jim | 1890 | +7/24-9/3+ | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Roger Connor | connor001rog | 1890 | 123 g. | New York | Players League | New York, NY | |
| T. Connor | connor000t-- | 1890 | +7/8+ | Utica | New York State League | Utica, NY | |
| Connors | 1890 | Austin Senators | Texas League | Austin, TX | |||
| Connors | connor046--- | 1890 | 5/1 | Peru | Indiana State League | Peru, IN | |
| Connors | connor048--- | 1890 | 5/13-8/7+ | Cobleskill | New York State League | Cobleskill, NY | |
| Cuddy Connors | 1890 | RISt | , | ||||
| Denny Connors | connor001den | 1890 | 5/1-7/5 | Toronto Canucks | International Association | Toronto, ON | |
| Denny Connors | connor001den | 1890 | 8/13-10/12 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Jerry Connors | connor001jer | 1890 | Cleveland Stars | Independent | Cleveland, OH | ||
| Theodore Conover | conove001the | 1890 | 4/4-5/31 | Austin Senators | Texas League | Austin, TX | |
| Theodore Conover | conove001the | 1890 | 6/18-8/3 | Akron Akrons | Tri-State League | Akron, OH | |
| Theodore Conover | conove001the | 1890 | Knoxville | Independent | Knoxville, TN | ||
| Conrad | conrad001--- | 1890 | West Superior | Amat | West Superior, WI | ||
| Ben Conroy | conroy001ben | 1890 | 4/21-10/4 | 117 g. | Philadelphia | American Association | Philadelphia, PA |
| Dick Conway | conway001dic | 1890 | 5/14 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| Jim Conway | conway001jim | 1890 | 4/26-9/29 | Kansas City Blues | Western Association | Kansas City, MO | |
| Phil Conway | conway001phi | 1890 | 5/12-5/25 | McKeesport | Tri-State League | McKeesport, PA | |
| Phil Conway | conway001phi | 1890 | 6/3-7/6 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Phil Conway | conway001phi | 1890 | Lowell | Amat | Lowell, MA | ||
| John Coogan | coogan001joh | 1890 | 5/5-8/7 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Cook | cook--063--- | 1890 | 6/16 | Albany | New York State League | Albany, NY | |
| E.W. Cook | cook--001e-- | 1890 | 4/21-4/29 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| O.M. Cook | cook--000om- | 1890 | Kokomo | Indiana State League | Kokomo, IN | ||
| Paul Cook | cook--003pau | 1890 | 58 g. | Brooklyn | Players League | Brooklyn, NY | |
| Jimmy Cooney | cooney002jim | 1890 | 4/19- | 135 g. | Chicago | National League | Chicago, IL |
| William Cooney | cooney002wil | 1890 | 5/15-6/22 | Portland | Pacific Northwest League | Portland, OR | |
| William Cooney | cooney002wil | 1890 | Salem | Independent | Salem, OR | ||
| L. Copeland | copela000l-- | 1890 | Indianapolis | Indianapolis, IN | |||
| L. Copeland | copela000l-- | 1890 | -7/5 | Marion/Logansport | Indiana State League | Marion, IN | |
| Jack Corbett | corbet001jac | 1890 | 4/29-8/15 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Jack Corbett | corbet001jac | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| David Corcoran | corcor001dav | 1890 | 5/- | Umpire | Il-Ia | , | |
| Jack Corcoran | corcor001jac | 1890 | 4/19-8/26 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Tommy Corcoran | corcor002tho | 1890 | 4/19- | 126 g. | Pittsburgh | Players League | Pittsburgh, PA |
| William Corcoran | corcor001wil | 1890 | Lansing | Michigan State League | Lansing, MI | ||
| John Corkhill | corkhi001pop | 1890 | 51 g. | Brooklyn | National League | Brooklyn, NY | |
| J. A. Corry | 1890 | Kokomo | Indiana State League | Kokomo, IN | |||
| Andy Costello | costel001and | 1890 | +5/23-9/12+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Henry Cote | cote--002hen | 1890 | 4/30-7/24 | McKeesport | Tri-State League | McKeesport, PA | |
| Henry Cote | cote--002hen | 1890 | 7/26-9/10 | Erie | New York-Pennsylvania League | Erie, PA | |
| Cotter | cotter012--- | 1890 | +5/24+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Dan Cotter | cotter001dan | 1890 | 7/16 | 1 g. | Buffalo | Players League | Buffalo, NY |
| Daniel Cotter | cotter003dan | 1890 | Johnstown-Gloversville | New York State League | Gloversville, NY | ||
| David Coughlin | coughl001dav | 1890 | 5/2-5/31 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| David Coughlin | coughl001dav | 1890 | 6/4-6/11 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| David Coughlin | coughl001dav | 1890 | 6/16-7/7 | London Tecumsehs | International Association | London, ON | |
| David Coughlin | coughl001dav | 1890 | +8/12-9/3+ | Olean | New York-Pennsylvania League | Olean, NY | |
| Roscoe Coughlin | coughl001ros | 1890 | Springfield | Springfield, | |||
| Roscoe Coughlin | coughl001ros | 1890 | 6/22-7/1 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Roscoe Coughlin | coughl001ros | 1890 | 7/19-8/3 | Sacramento Senators | California League | Sacramento, CA | |
| Roscoe Coughlin | coughl001ros | 1890 | 8/21-11/23 | San Francisco Haverlys | California League | San Francisco, CA | |
| Roscoe Coughlin | coughl001ros | 1890 | 4/22- | 11 g. | Chicago | National League | Chicago, IL |
| Frank Cox | cox---003fra | 1890 | Umpire | Atl | , | ||
| John Cox | cox---008joh | 1890 | 4/21-5/2 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| John Cox | cox---008joh | 1890 | 5/27-7/21 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| John Cox | cox---008joh | 1890 | 7/25-9/30 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| John Coy | coy---002joh | 1890 | Kokomo | Indiana State League | Kokomo, IN | ||
| Coyne | coyne-006--- | 1890 | 5/12-7/28+ | Utica | New York State League | Utica, NY | |
| Joe Coyne | coyne-006--- | 1890 | +5/21-8/? | Utica | New York State League | Utica, NY | |
| Joe Coyne | coyne-001joe | 1890 | 8/29-9/28+ | Albany | New York State League | Albany, NY | |
| Joe Coyne | coyne-001joe | 1890 | Troy | New York State League | Troy, NY | ||
| Thomas Coyne | coyne-001tho | 1890 | Webb City | Independent | Webb City, MO | ||
| Craft | craft-005--- | 1890 | Marquette | Upppenin | Marquette, MI | ||
| H. A. Cragin | 1890 | -6/ | Umpire | PacNW | , | ||
| J. O. Cram | 1890 | Kearney | Independent | Kearney, NE | |||
| Cramer | 1890 | -3/ | San Francisco Haverlys | California League | San Francisco, CA | ||
| Orville Crandall | cranda001o-- | 1890 | 5/15-5/17 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Orville Crandall | cranda001o-- | 1890 | 5/-5/24 | Elkhart | Indiana State League | Elkhart, IN | |
| Ed Crane | crane-001ed- | 1890 | 43 g. | New York | Players League | New York, NY | |
| Sam Crane | crane-002sam | 1890 | 4 g. | New York | National League | New York, NY | |
| Sam Crane | crane-002sam | 1890 | 22 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Sam Crane | crane-002sam | 1890 | +8/22-8/31+ | Troy | New York State League | Troy, NY | |
| Sam Crane | crane-002sam | 1890 | -9/30 | Umpire | NYSt | , | |
| Fred Craves | craves001fre | 1890 | 5/1-6/10 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay City, MI | |
| Charles Crawford | 1890 | Joplin | Independent | Joplin, MO | |||
| George Crawford | crawfo002geo | 1890 | 10/8-10/12 | 5 g. | Philadelphia | American Association | Philadelphia, PA |
| Dave Creamer | creame002dav | 1890 | 8/31 | Sacramento Senators | California League | Sacramento, CA | |
| Dave Creamer | creame002dav | 1890 | 11/13 | Oakland Colonels | California League | Oakland, CA | |
| Joseph Creegan | creega001jos | 1890 | 5/5-5/16 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Joseph Creegan | creega001jos | 1890 | +6/28-7/25+ | Olean | New York-Pennsylvania League | Olean, NY | |
| Gus Creely | creely001gus | 1890 | -9/24 | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Gus Creely | creely001gus | 1890 | 10/9-10/11 | 4 g. | St. Louis Browns | American Association | St. Louis, MO |
| Ed Creighton | creigh001ed- | 1890 | MLB Umpire | American Association | , | ||
| Lou Criger | criger001lou | 1890 | Elkhorn Lakeviews | Independent | Elkhorn, IN | ||
| Tommy Crinnion | crinni001tom | 1890 | St. Louis Shamrocks | Independent | St. Louis, MO | ||
| Jack Croghan | crogan001joh | 1890 | 3/30-6/7 | Houston Mud Cats | Texas League | Houston, TX | |
| Jack Croghan | crogan001joh | 1890 | 6/27-6/28 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Jack Croghan | crogan001joh | 1890 | 7/4-8/2 | Canton Nadjys | Tri-State League | Canton, OH | |
| Curtis Crolius | croliu001cur | 1890 | 6/12-6/14 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Cronin | cronin011--- | 1890 | RISt | , | |||
| Cronin | cronin011--- | 1890 | 7/12 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Daniel Cronin | cronin003dan | 1890 | Dover | semi-pro | Dover, NH | ||
| Daniel Cronin | cronin003dan | 1890 | Lawrence | semi-pro | Lawrence, MA | ||
| Jack Crooks | crooks001jac | 1890 | 135 g. | Columbus | American Association | Columbus, OH | |
| Clarence Cross | cross-001cla | 1890 | 5/3-7/12 | Spokane | Pacific Northwest League | Spokane, WA | |
| Lave Cross | cross-001laf | 1890 | 63 g. | Philadelphia | Players League | Philadelphia, PA | |
| Monte Cross | cross-001mon | 1890 | 5/1-5/12 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Monte Cross | cross-001mon | 1890 | 5/13-7/23 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Monte Cross | cross-001mon | 1890 | 7/31-9/30 | Lebanon | Atlantic Association | Lebanon, PA | |
| William Crossley | crossl001wil | 1890 | 4/18-9/30 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Dan Crotty | crotty001dan | 1890 | 5/5-5/6 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Dan Crotty | crotty001dan | 1890 | 5/15-5/18 | Portland | Pacific Northwest League | Portland, OR | |
| Dan Crotty | crotty001dan | 1890 | Helena | Independent | Helena, MT | ||
| Joe Crotty | crotty001joe | 1890 | , | ||||
| M. E. Crow | 1890 | Fort Dodge | Independent | Fort Dodge, KS | |||
| Billy Crowell | crowel001bil | 1890 | 5/1-8/9 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Billy Crowell | crowel001bil | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Billy Crowell | crowel001bil | 1890 | -9/24 | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Jim Cudworth | cudwor001jim | 1890 | 4/19-7/28 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Jim Cudworth | cudwor001jim | 1890 | 8/9-9/30 | New Haven | Atlantic Association | New Haven, CT | |
| John Cuff | cuff--001joh | 1890 | Somerville | NJSt | Somerville, NJ | ||
| John Cuff | cuff--001joh | 1890 | 7/15-7/16 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Ed Culberson | culber001ed- | 1890 | 5/- | Joliet | Illinois-Iowa League | Joliet, IL | |
| Eddie Cull | cull--001edw | 1890 | Manistee | Michigan State League | Manistee, MI | ||
| Eddie Cull | cull--001edw | 1890 | 6/25-7/3 | McKeesport | Tri-State League | McKeesport, PA | |
| Eddie Cull | cull--001edw | 1890 | Marquette | UpperPenin | Marquette, MI | ||
| Cunningham | cunnin006--- | 1890 | 7/1 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Cunningham | cunnin027--- | 1890 | 5/12-6/5+ | Utica | New York State League | Utica, NY | |
| Bert Cunningham | cunnin001ell | 1890 | 15 g. | Philadelphia | Players League | Philadelphia, PA | |
| Bert Cunningham | cunnin001ell | 1890 | 28 g. | Buffalo | Players League | Buffalo, NY | |
| George Cuppy | cuppy-001geo | 1890 | 5/2-7/8 | Dayton Reds | Tri-State League | Dayton, OH | |
| George Cuppy | cuppy-001geo | 1890 | 7/- | Muncie | Indiana State League | Muncie, IN | |
| George Cuppy | cuppy-001geo | 1890 | 7/28-9/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Eugene Curry | curry-001eug | 1890 | 5/3-5/30 | Seattle | Pacific Northwest League | Seattle, WA | |
| James Curry | curry-002jam | 1890 | 7/1-7/21 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Wes Curry | curry-001wes | 1890 | 5/1-7/7 | Umpire | Int | , | |
| Wes Curry | curry-001wes | 1890 | 59 g. | MLB Umpire | American Association | , | |
| Curtin | curtin003--- | 1890 | +5/16+ | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Jim Curtiss | curtis001jim | 1890 | 4/17-9/29 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Charlie Cushman | cushma001cha | 1890 | 4/17-9/30 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Ed Cushman | cushma001ed- | 1890 | 4/20-10/11 | 40 g. | Toledo | American Association | Toledo, OH |
| Andy Cusick | cusick001and | 1890 | 5/18-9/17 | Umpire | WestA | , | |
| Ed Cutler | cutler001ed- | 1890 | Catasauque | Independent | Catasauque, NY | ||
| Ed Cutler | cutler001ed- | 1890 | 6/25-7/1 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Dacey | 1890 | Hannibal | Independent | Hannibal, MO | |||
| Bill Dahlen | dahlen001wil | 1890 | 5/13-9/11 | Cobleskill | New York State League | Cobleskill, NY | |
| Bill Dahlen | dahlen001wil | 1890 | +9/25-9/30 | Albany | New York State League | Albany, NY | |
| J. Dahmke | dahmke000--- | 1890 | +8/31+ | Chicago Rivals | Chicago City League | Chicago, IL | |
| Dailey | dailey013--- | 1890 | +6/14+ | Bluffton | Indiana State League | Bluffton, IN | |
| John Dailey | dailey001joh | 1890 | Umpire | MiSt | , | ||
| Vince Dailey | dailey001vin | 1890 | 4/21- | 64 g. | Cleveland | National League | Cleveland, OH |
| Vince Dailey | dailey001vin | 1890 | +8/13-8/25 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Con Daily | daily-001con | 1890 | 46 g. | Brooklyn | Players League | Brooklyn, NY | |
| Dan Daily | daily-000dan | 1890 | Troy | New York State League | Troy, NY | ||
| Ed Daily | daily-001ed- | 1890 | 91 g. | Brooklyn | American Association | Brooklyn, NY | |
| Ed Daily | daily-001ed- | 1890 | 4 g. | New York | National League | New York, NY | |
| Ed Daily | daily-001ed- | 1890 | 23 g. | Louisville | American Association | Louisville, KY | |
| Thomas Daily | daily-001tho | 1890 | 4/30-6/29 | Springfield | Tri-State League | Springfield, OH | |
| William Dale | dale--001wil | 1890 | 4/30-7/19 | Mansfield | Tri-State League | Mansfield, OH | |
| Bill Daley | daley-001bil | 1890 | 39 g. | Boston | Players League | Boston, MA | |
| J. Daley | daley-001j-- | 1890 | 5/1-7/23 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| J. Daley | daley-001j-- | 1890 | 8/2-8/12 | Lebanon | Atlantic Association | Lebanon, PA | |
| Jack Dallas | dallas001jac | 1890 | 3/23-4/5 | Stockton | California League | Stockton, CA | |
| Tom Dallas | dallas001tom | 1890 | 4/30-6/9 | Canton Nadjys | Tri-State League | Canton, OH | |
| Tom Dallas | dallas001tom | 1890 | 6/24-7/19 | McKeesport | Tri-State League | McKeesport, PA | |
| Abner Dalrymple | dalrym001abn | 1890 | 4/17-4/27 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Abner Dalrymple | dalrym001abn | 1890 | 5/3-9/2 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Andrew Dalton | dalton001and | 1890 | Hancock | UppPenin | Hancock, MI | ||
| Andrew Dalton | dalton001and | 1890 | Houghton | UppPenin | Houghton, MI | ||
| Andrew Dalton | dalton001and | 1890 | Calumet | UppPenin | Calumet, MI | ||
| Jack Daly | daly--002jac | 1890 | 3/23-11/23 | Sacramento Senators | California League | Sacramento, CA | |
| Joe Daly | daly--001joe | 1890 | 9/19 - | 21 g. | Philadelphia | American Association | Philadelphia, PA |
| Sun Daly | daly--001sun | 1890 | 4/17-9/29 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Tom Daly | daly--002tho | 1890 | 82 g. | Brooklyn | National League | Brooklyn, NY | |
| Charles Daniels | daniel005cha | 1890 | 5/30-7/30 | Washington Senators | Atlantic Association | Washington, DC | |
| Charles Daniels | daniel005cha | 1890 | 8/11-9/5 | Olean | New York-Pennsylvania League | Olean, NY | |
| Pete Daniels | daniel003pet | 1890 | 4/19 - | 4 g. | Pittsburgh | National League | Pittsburgh, PA |
| George Darby | darby-001geo | 1890 | 5/1-7/19 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| George Darby | darby-001geo | 1890 | Parsons | Independent | Parsons, KS | ||
| Dell Darling | darlin001del | 1890 | 58 g. | Chicago | Players League | Chicago, IL | |
| William Darnbrough | darnbr001wil | 1890 | 4/19-7/14 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| William Darnbrough | darnbr001wil | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Jack Darragh | darrag001jac | 1890 | U. of Pennsylvania | College | , | ||
| John Darrah | darrah001joh | 1890 | 4/30-8/3 | Canton Nadjys | Tri-State League | Canton, OH | |
| John Darrah | darrah001joh | 1890 | 8/8-8/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Darrow | darrow003--- | 1890 | 6/24-6/28 | Akron Akrons | Tri-State League | Akron, OH | |
| Mark Dashiell | dashie001mar | 1890 | 5/1-7/15 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Mark Dashiell | dashie001mar | 1890 | +7/23+ | Aurora | Illinois-Iowa League | Aurora, IL | |
| George Davies | davies001geo | 1890 | 4/17-9/8 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Ambrose Davis | davis-001amb | 1890 | New York Big Gorham | Independent | New York, NY | ||
| George Davis | davis-015geo | 1890 | 4/19- | 136 g. | Cleveland | National League | Cleveland, OH |
| Ira Davis | davis-008j-- | 1890 | 5/1-5/17 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Ira Davis | davis-008j-- | 1890 | 6/3-6/5 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Jumbo Davis | davis-001jum | 1890 | 21 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Jumbo Davis | davis-001jum | 1890 | 38 g. | Brooklyn | American Association | Brooklyn, NY | |
| Lee Dawkins | dawkin001lev | 1890 | 5/17-5/19 | Dallas Hams | Texas League | Dallas, TX | |
| Dawson | 1890 | +9/22+ | Canisteo | WNYSt | Canisteo, NY | ||
| John Dawson | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | |||
| Bill Day | day---001bil | 1890 | -10/3 | 4 g. | Philadelphia | National League | Philadelphia, PA |
| Bill Day | day---001bil | 1890 | 6 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Frank Day | day---001fra | 1890 | 5/1-7/5 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay City, MI | |
| Frank Day | day---001fra | 1890 | 7/11-9/30 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Pat Dealy | dealy-001pat | 1890 | -6/5 | 18 g. | Syracuse | American Association | Syracuse, NY |
| Pat Dealy | dealy-001pat | 1890 | London Tecumsehs | International Association | London, ON | ||
| George Dean | dean--001geo | 1890 | 4/12 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| George Dean | dean--001geo | 1890 | 5/3-5/6 | Seattle | Pacific Northwest League | Seattle, WA | |
| William Dean | 1890 | 5/2-6/27 | Umpire | EIntSt | , | ||
| John Deasley | deasle001joh | 1890 | 5/1-5/23 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| George Decker | decker003geo | 1890 | 5/1-9/? | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Harry Decker | decker001har | 1890 | 5 g. | Philadelphia | National League | Philadelphia, PA | |
| Harry Decker | decker001har | 1890 | 92 g. | Pittsburgh | National League | Pittsburgh, PA | |
| James Deegan | deegan001jam | 1890 | 4/29-8/17 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| B. G. DeHart | 1890 | Atlanta Atlantas | Atlanta, GA | ||||
| Ed Delahanty | delaha001edw | 1890 | 115 g. | Cleveland | Players League | Cleveland, OH | |
| Bill Delaney | delane001bil | 1890 | 4/29-8/15 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Bill Delaney | delane001bil | 1890 | 8/21- | 36 g. | Cleveland | National League | Cleveland, OH |
| Daniel Delaney | delane001dan | 1890 | Port Huron | Michigan State League | Port Huron, MI | ||
| Jimmy Delaney | delane004jam | 1890 | 5/24-8/9 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| F. Delmas | delmas001f-- | 1890 | -3/ | San Francisco Pioneers | CaWinter | San Francisco, CA | |
| Delmore | delmor000--- | 1890 | New York Metroplitans | Independent | New York, NY | ||
| Delmore | delmor000--- | 1890 | 7/4-8/6+ | Albany | New York State League | Albany, NY | |
| Fred Demarais | demara001fre | 1890 | 5/3-7/5 | London Tecumsehs | International Association | London, ON | |
| Fred Demarais | demara001fre | 1890 | 7/26 | 1 g. | Chicago | National League | Chicago, IL |
| Fred Demarais | demara001fre | 1890 | 8/9 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Fred Demarais | demara001fre | 1890 | 8/17 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Jack Demorest | demore001jac | 1890 | Milford | Independent | Milford, DE | ||
| Howard Denny | denny-001how | 1890 | 4/29-5/27 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Jerry Denny | denny-001jer | 1890 | 114 g. | New York | National League | New York, NY | |
| Mike DePangher | depang001mik | 1890 | 4/10-5/30 | Stockton | California League | Stockton, CA | |
| John Depinet | depine000joh | 1890 | Erie | New York-Pennsylvania League | Erie, PA | ||
| Gene Derby | derby-001gen | 1890 | 5/12-9/21+ | Troy | New York State League | Troy, NY | |
| George Derby | derby-002geo | 1890 | +5/13-6/19+ | Anderson | Indiana State League | Anderson, IN | |
| Jess Derrick | derric001jes | 1890 | 4/5-6/6 | Waco Babies | Texas League | Waco, TX | |
| Jess Derrick | derric001jes | 1890 | 6/25 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Jess Derrick | derric001jes | 1890 | +7/19+ | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| H. DeSilva | desilv001h-- | 1890 | 8/11 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| William Deveney | devinn001pun | 1890 | Chester | Independent | Chester, PA | ||
| Jim Devine | devine001jim | 1890 | 5/5, 9/1 | MLB Umpire | American Association | , | |
| William Devine | devine002wil | 1890 | 5/3-5/8 | Seattle | Pacific Northwest League | Seattle, WA | |
| Devinney | 1890 | 5/16-5/30+ | Umpire | Tx | , | ||
| Jim Devlin | devlin002jim | 1890 | 4/20-8/31 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Charlie Dewald | dewald001cha | 1890 | 5/16-9/10 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Charlie Dewald | dewald001cha | 1890 | 9/20-9/25 | 2 g. | Cleveland | Players League | Cleveland, OH |
| Delphis Dextraze | dextra001del | 1890 | 4/30-5/7 | Mansfield | Tri-State League | Mansfield, OH | |
| Delphis Dextraze | dextra001del | 1890 | 5/15-7/29 | Seattle | Pacific Northwest League | Seattle, WA | |
| George Dezell | 1890 | Ogdensburg | Independent | Ogdensburg, NY | |||
| Buttercup Dickerson | dicker001but | 1890 | 5/31-6/20 | New Haven | Atlantic Association | New Haven, CT | |
| Dillon | dillon004--- | 1890 | 5/2-5/18 | Canton Nadjys | Tri-State League | Canton, OH | |
| Andy Dillon | dillon001and | 1890 | no g. | St. Paul Apostles | Western Association | St. Paul, MN | |
| Ed Dillon | dillon001ed- | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| David Dischler | dischl001dav | 1890 | 5/12-9/30 | Utica | New York State League | Utica, NY | |
| Dixon | dixon-014--- | 1890 | Muskegon | Michigan State League | Muskegon, MI | ||
| Dixon | dixon-014--- | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Eddie Dixon | dixon-002edw | 1890 | +6/19-9/25+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Fred Doe | doe---002fre | 1890 | 8/23 | 1 g. | Buffalo | Players League | Buffalo, NY |
| Fred Doe | doe---002fre | 1890 | 8/30 | 1 g. | Pittsburgh | Players League | Pittsburgh, PA |
| Dolan | dolan-024--- | 1890 | 6/16 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| John Dolan | dolan-002joh | 1890 | 4/29-8/14 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| John Dolan | dolan-002joh | 1890 | 9/5- | 2 g. | Cincinnati | National League | Cincinnati, OH |
| Tom Dolan | dolan-001tom | 1890 | 4/30 - | 3 g. | MLB Umpire | American Association | , |
| Tom Dolan | dolan-001tom | 1890 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | ||
| Tom Dolan | dolan-001tom | 1890 | 5/10-6/22 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| Billy Donaghy | donagh001bil | 1890 | 5/15-9/8 | Erie | New York-Pennsylvania League | Erie, PA | |
| Charley Donahue | 1890 | no g. | Marion/Logansport | Indiana State League | Marion, IN | ||
| Jim Donahue | donahu001jim | 1890 | 4/19-9/29 | Kansas City Blues | Western Association | Kansas City, MO | |
| Red Donahue | donahu001fra | 1890-93 | Villanova Col. | College | , | ||
| Red Donahue | donahu001fra | 1890 | New Milford | Independent | New Milford, CT | ||
| Charles Donnelly | 1890 | Marion/Logansport | Indiana State League | Marion, IN | |||
| Frank Donnelly | donnel002fra | 1890 | 5/1-5/23 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Jim Donnelly | donnel002jim | 1890 | 5/1-6/17 | Detroit Wolverines | International Association | Detroit, MI | |
| Jim Donnelly | donnel002jim | 1890 | 11 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Jim Donnelly | donnel001jim | 1890 | 5/1-5/? | Umpire | Il-Ia | , | |
| Jim Donnelly | donnel001jim | 1890 | 5/?-7/1 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Alexander Donoghue | donohu001ale | 1890 | 5/1-7/23 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Alexander Donoghue | donohu001ale | 1890 | 7/26-7/31 | Washington Senators | Atlantic Association | Washington, DC | |
| Alexander Donoghue | donohu001ale | 1890 | 8/2-9/30 | Lebanon | Atlantic Association | Lebanon, PA | |
| Neil Donohue | donohu001nei | 1890 | +5/15-7/28 | Oneonta | New York State League | Oneonta, NY | |
| Neil Donohue | donohu001nei | 1890 | 8/13-8/20 | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Neil Donohue | donohu001nei | 1890 | Cobleskill | New York State League | Cobleskill, NY | ||
| Donovan | donova010--- | 1890 | 6/3-6/4 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Ed Donovan | donova001ed- | 1890 | +5/20-6/30 | Muncie | Indiana State League | Muncie, IN | |
| Ed Donovan | donova001ed- | 1890 | -7/5 | Marion/Logansport | Indiana State League | Marion, IN | |
| Jack Donovan | donova002jac | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Jack Donovan | donova002jac | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| Jack Donovan | donova003jac | 1890 | 4/30-6/1 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Jack Donovan | donova003jac | 1890 | 71 g. | Ottawa | Illinois-Iowa League | Ottawa, IL | |
| Patsy Donovan | donova001pat | 1890 | 4/19- | 32 g. | Boston | National League | Boston, MA |
| Patsy Donovan | donova001pat | 1890 | 28 g. | Brooklyn | National League | Brooklyn, NY | |
| Timothy Donovan | donova002tim | 1890 | 4/30-7/8 | Dayton Reds | Tri-State League | Dayton, OH | |
| Charles Dooley | dooley001cha | 1890 | 5/3-7/19 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Charles Dooley | dooley001cha | 1890 | 8/8-11/23 | Oakland Colonels | California League | Oakland, CA | |
| Harry Dooms | dooms-001har | 1890 | 5/11-7/31 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Harry Dooms | dooms-001har | 1890 | 8/27-8/31 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| Harry Dooms | dooms-001har | 1890 | Fort Worth | TXWinter | Fort Worth, TX | ||
| John Doran | doran-001joh | 1890 | 4/21-9/9 | New Haven | Atlantic Association | New Haven, CT | |
| Harry Doremus | dorsem001har | 1890 | +5/18+ | Indianapolis Daltons | Independent | Indianapolis, IN | |
| Harry Doremus | dorsem001har | 1890 | 6/5-6/7 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Mike Dorgan | dorgan001mik | 1890 | 4/17- | 33 g. | Syracuse | American Association | Syracuse, NY |
| Dorman | dorman002--- | 1890 | 7/31 | Mansfield | Tri-State League | Mansfield, OH | |
| Albert Dorsey | dorsey001alb | 1890 | 4/30-5/7 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Albert Dorsey | dorsey001alb | 1890 | +5/27+ | Marion/Logansport | Indiana State League | Marion, IN | |
| Herm Doscher | dosche001her | 1890 | 117 g. | MLB Umpire | American Association | , | |
| Babe Doty | doty--001bab | 1890 | 5/2-8/6 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Babe Doty | doty--001bab | 1890 | 8/18 | 1 g. | Toledo | American Association | Toledo, OH |
| Zim Dougan | dougan001zim | 1890 | 4/30-8/7 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Dougherty | doughe004--- | 1890 | 8/19-8/28 | St. Paul Apostles | Western Association | St. Paul, MN | |
| F.M. Dougherty | doughe003f-- | 1890 | 5/2-5/15 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| James Dowd | dowd--002jam | 1890 | 4/20-7/19 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| James Dowd | dowd--002jam | 1890 | Newark Star | Amat | Newark, NJ | ||
| Tommy Dowd | dowd--001tho | 1890 | Brown Univ. | College | , | ||
| Joe Dowie | dowie-001joe | 1890 | 5/1-6/21 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Joe Dowie | dowie-001joe | 1890 | 6/23-7/7 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| Joe Dowie | dowie-001joe | 1890 | 7/14-9/13 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Billy Dowling | dowlin001bil | 1890 | +5/15-6/17+ | Oneonta | New York State League | Oneonta, NY | |
| Sam Downey | downey001sam | 1890 | Troy | New York State League | Troy, NY | ||
| Downing | downin006--- | 1890 | 5/-6/25 | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Tom Dowse | dowse-001tom | 1890 | 4/21- | 40 g. | Cleveland | National League | Cleveland, OH |
| Doyle | doyle-004--- | 1890 | 6/1-6/3 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Doyle | doyle-048--- | 1890 | +5/27+ | Oneonta | New York State League | Oneonta, NY | |
| Doyle | doyle-049--- | 1890 | +6/5-8/24 | Cobleskill | New York State League | Cobleskill, NY | |
| Conny Doyle | doyle-001con | 1890 | 4/19-9/30 | New Haven | Atlantic Association | New Haven, CT | |
| E. Doyle | doyle-001e-- | 1890 | 6/19-7/8 | Hartford | Atlantic Association | Hartford, CT | |
| Edward Doyle | doyle-002edw | 1890 | 5/2-5/14 | London Tecumsehs | International Association | London, ON | |
| Edward Doyle | doyle-002edw | 1890 | 5/20 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay City, MI | |
| Edward Doyle | doyle-002edw | 1890 | 5/22 | London Tecumsehs | International Association | London, ON | |
| Edward Doyle | doyle-002edw | 1890 | 5/23-7/5 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay City, MI | |
| Edward Doyle | doyle-002edw | 1890 | +8/23-9/15 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| J.C. Doyle | doyle-003j-- | 1890 | 5/16-9/6 | Olean | New York-Pennsylvania League | Olean, NY | |
| Jack Doyle | doyle-002joh | 1890 | 77 g. | Columbus | American Association | Columbus, OH | |
| Jake Drauby | drauby001jak | 1890 | 3/31-6/6 | Dallas Hams | Texas League | Dallas, TX | |
| Jake Drauby | drauby001jak | 1890 | Joplin | Independent | Joplin, MO | ||
| Jake Drauby | drauby001jak | 1890 | +7/4-9/23+ | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Benjamin Drischel | drisch001ben | 1890 | 5/1-6/30 | Muncie | Indiana State League | Muncie, IN | |
| Andrew Driscoll | drisco001and | 1890 | Fitchburg | Independent | Fitchburg, MA | ||
| Will Driscoll | drisco003wil | 1890 | Newark | Independent | Newark, OH | ||
| Duane | duane-002--- | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | ||
| Bert Duane | duane-001alb | 1890 | 4/3-6/1 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Bert Duane | duane-001alb | 1890 | 7/5-8/9 | Stockton | California League | Stockton, CA | |
| James Duane | duane-001jam | 1890 | 7/18 | Hartford | Atlantic Association | Hartford, CT | |
| Charlie Duffee | duffee001cha | 1890 | 98 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Duffy | duffy-039--- | 1890 | +8/31+ | Chicago Franklins | Chicago City League | Chicago, IL | |
| Hugh Duffy | duffy-001hug | 1890 | 137 g. | Chicago | Players League | Chicago, IL | |
| Michael Duffy | duffy-002mic | 1890 | 4/19-7/9 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Edward Dugan | dugan-002edw | 1890 | +5/23-8/1+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Dan Dugdale | dugdal001dan | 1890 | 4/19-9/29 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Martin Duke | duke--002mar | 1890 | 4/17-9/30 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Martin Duke | duke--002mar | 1890 | 10/13 | MLB Umpire | American Association | , | |
| Jim Duncan | duncan001jim | 1890 | +5/28-9/4 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Ed Dundon | dundon001ed- | 1890 | 4/30-5/2 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Sam Dungan | dungan001sam | 1890 | 3/23-11/23 | Oakland Colonels | California League | Oakland, CA | |
| Fred Dunlap | dunlap002fre | 1890 | 17 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Fred Dunlap | dunlap002fre | 1890 | 1 g. | New York | Players League | New York, NY | |
| Widdy Dunn | dunn--001wid | 1890 | 5/15-9/15 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Andy Dunning | dunnin001and | 1890 | 5/2-6/2 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| Andy Dunning | dunnin001and | 1890 | 6/7-6/9 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| Andy Dunning | dunnin001and | 1890 | 6/19 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Andy Dunning | dunnin001and | 1890 | -7/? | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Andy Dunning | dunnin001and | 1890 | 8/8-9/9 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Durky | durky-000--- | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| George Duryea | duryea001geo | 1890 | Dubuque | Illinois-Iowa League | Dubuque, IA | ||
| Jesse Duryea | duryea001jes | 1890 | 33 g. | Cincinnati | National League | Cincinnati, OH | |
| Frank DuShane | dushan002--- | 1890 | 5/3 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Frank DuShane | dushan002--- | 1890 | Jackson | Independent | Jackson, MI | ||
| Bill Duzen | duzen-001bil | 1890 | 9/21- | 2 g. | Buffalo | Players League | Buffalo, NY |
| Dwyer | dwyer-032--- | 1890 | 5/22-6/5 | Albany | New York State League | Albany, NY | |
| Dick Dwyer | dwyer-001ric | 1890 | 5/3-5/18 | Portland | Pacific Northwest League | Portland, OR | |
| Dick Dwyer | dwyer-001ric | 1890 | Helena | Independent | Helena, MT | ||
| Frank Dwyer | dwyer-001fra | 1890 | 16 g. | Chicago | Players League | Chicago, IL | |
| Eagan | eagan-012--- | 1890 | 5/21-5/24 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Eagan | eagan-012--- | 1890 | 6/5-6/10 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Eagan | eagan-012--- | 1890 | 6/14-6/17 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Bill Eagan | eagan-001bil | 1890 | 5/1-7/21 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Bill Eagan | eagan-001bil | 1890 | 7/22-9/30 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Pete Eagan | eagan-001pat | 1890 | 74 g. | Cobleskill | New York State League | Cobleskill, NY | |
| Pete Eagan | eagan-001pat | 1890 | +5/30-9/21+ | Troy | New York State League | Troy, NY | |
| Howard Earl | earl--002how | 1890 | 4/19 - | 92 g. | Chicago | National League | Chicago, IL |
| Billy Earle | earle-001bil | 1890 | 22 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Billy Earle | earle-001bil | 1890 | 7/4-10/12 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Harry East | east--001har | 1890 | , | ||||
| Henry Easterday | easter001hen | 1890 | 58 g. | Columbus | American Association | Columbus, OH | |
| Henry Easterday | easter001hen | 1890 | 19 g. | Philadelphia | American Association | Philadelphia, PA | |
| Henry Easterday | easter001hen | 1890 | 7 g. | Louisville | American Association | Louisville, KY | |
| Jack Easton | easton001jac | 1890 | 41 g. | Columbus | American Association | Columbus, OH | |
| Hi Ebright | ebrigh001hi- | 1890 | -3/ | San Francisco Pioneers | CaWinter | San Francisco, CA | |
| Hi Ebright | ebrigh001hi- | 1890 | 3/23-11/23 | San Francisco Haverlys | California League | San Francisco, CA | |
| Eckhardt | eckhar001--- | 1890 | 6/16 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Jerry Eddinger | edinge001jer | 1890 | 5/-7/10 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Jerry Eddinger | edinge001jer | 1890 | 7/- | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| James Edgarton | edgart001jam | 1890 | Cobleskill | New York State League | Cobleskill, NY | ||
| Edward Egan | egan--002edw | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| Edward Egan | egan--002edw | 1890 | 6/12-6/13 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Edward Egan | egan--002edw | 1890 | Dover | Independent | Dover, NH | ||
| Edward Egan | egan--002edw | 1890 | 7/5-7/24 | Peru | Indiana State League | Peru, IN | |
| C. Ehler | ehler-001c-- | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| Red Ehret | ehret-001phi | 1890 | 43 g. | Louisville | American Association | Louisville, KY | |
| Einstein | einste000--- | 1890 | 5/16-bef.6/28 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Ed Eiteljorge | eitelj001ed- | 1890 | 5/2 | 1 g. | Chicago | National League | Chicago, IL |
| Ed Eiteljorge | eitelj001ed- | 1890 | 5/8-8/1 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Ed Eiteljorge | eitelj001ed- | 1890 | 9/5-9/29 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Harry Eliff | eliff-001hen | 1890 | 3/31-4/29 | Houston Mud Cats | Texas League | Houston, TX | |
| Ellery | ellery002--- | 1890 | -6/ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| F. B. Elliott | elliot000ed- | 1890 | +5/22+ | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| F. B. Elliott | elliot000ed- | 1890 | 6/14-7/19 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Bones Ely | ely---001wil | 1890 | 119 g. | Syracuse | American Association | Syracuse, NY | |
| Bobby Emmerke | emmerk001rob | 1890 | 5/3-7/14 | Spokane | Pacific Northwest League | Spokane, WA | |
| Bob Emslie | emslie001bob | 1890 | 4/17- | 137 g. | MLB Umpire | American Association | , |
| George England | englan001geo | 1890 | 5/2-6/9 | Umpire | TriSt | , | |
| George England | englan001geo | 1890 | 6/26-7/18 | Umpire | NY-Pa | , | |
| English | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| Tom Enright | 1890 | 6/?-11/23 | Sacramento Senators | California League | Sacramento, CA | ||
| Fred Erichson | erichs001fre | 1890 | Houston Crescents | Independent | Houston, TX | ||
| George Ertelt | ertelt001geo | 1890 | 5/1-7/5 | Easton | Eastern Interstate League | Easton, PA | |
| Duke Esper | esper-001duk | 1890 | Guthrie | Independent | Guthrie, OK | ||
| Duke Esper | esper-001duk | 1890 | 4/18- | 18 g. | Philadelphia | American Association | Philadelphia, PA |
| Duke Esper | esper-001duk | 1890 | 2 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Duke Esper | esper-001duk | 1890 | 5 g. | Philadelphia | National League | Philadelphia, PA | |
| Dude Esterbrook | esterb001dud | 1890 | 45 g. | New York | National League | New York, NY | |
| Tony Esterquest | esterq001ant | 1890 | +5/4+ | Chicago Brands | Chicago City League | Chicago, IL | |
| Tony Esterquest | esterq001ant | 1890 | 6/25-7/12 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Tony Esterquest | esterq001ant | 1890 | +8/31+ | Chicago Brands | Chicago City League | Chicago, IL | |
| Estey | estey-000--- | 1890 | Cobleskill | New York State League | Cobleskill, NY | ||
| Charles Ettinger | etting001cha | 1890 | 5/17 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Fred Evans | evans-003fre | 1890 | Providence Clyde | Independent | Providence, RI | ||
| Bill Everitt | everet001wil | 1890 | 8/2-11/23 | San Francisco Haverlys | California League | San Francisco, CA | |
| Buck Ewing | ewing-001buc | 1890 | 83 g. | New York | Players League | New York, NY | |
| John Ewing | ewing-001joh | 1890 | 35 g. | New York | Players League | New York, NY | |
| Charles Faatz | faatz-001cha | 1890 | 5/1-6/19+ | Anderson | Indiana State League | Anderson, IN | |
| Jay Faatz | faatz-001jay | 1890 | 32 g. | Buffalo | Players League | Buffalo, NY | |
| Jay Faatz | faatz-001jay | 1890 | Dover | Independent | Dover, NH | ||
| Henry Fabian | fabian001hen | 1890 | 3/31-6/6 | Dallas Hams | Texas League | Dallas, TX | |
| Henry Fabian | fabian001hen | 1890 | Joplin | Independent | Joplin, MO | ||
| Bill Fagan | fagan-001bil | 1890 | 4/19-5/30 | Hartford | Atlantic Association | Hartford, CT | |
| Bill Fagan | fagan-001bil | 1890 | 7/22-9/28 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Joe Fagin | fagin-001fre | 1890 | 4/9 | Austin Senators | Texas League | Austin, TX | |
| John Fairhurst | fairhu001joh | 1890 | 3/23-5/17 | Stockton | California League | Stockton, CA | |
| Jack Fanning | fannin001jac | 1890 | 4/18-6/8 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Jack Fanning | fannin001jac | 1890 | 6/9-6/25 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Jack Fanning | fannin001jac | 1890 | 7/24-10/11 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Bill Farmer | farmer002bil | 1890 | 4/19-7/26 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Sid Farrar | farrar001sid | 1890 | 127 g. | Philadelphia | Players League | Philadelphia, PA | |
| Farrell | farrel048--- | 1890 | +5/30+ | Utica | New York State League | Utica, NY | |
| Charles Farrell | farrel004cha | 1890 | +5/21-5/22+ | Troy | New York State League | Troy, NY | |
| Charles Farrell | farrel004cha | 1890 | Wakefield Millers | Independent | Wakefield, MA | ||
| Charles Farrell | farrel005cha | 1890 | 5/1- | Peru | Indiana State League | Peru, IN | |
| Duke Farrell | farrel002cha | 1890 | 117 g. | Chicago | Players League | Chicago, IL | |
| Jack Farrell | farrel008jac | 1890 | 5/29-7/11 | Sacramento Senators | California League | Sacramento, CA | |
| Jack Farrell | farrel008jac | 1890 | 7/24-7/25 | San Francisco Haverlys | California League | San Francisco, CA | |
| Jack Farrell | farrel009jac | 1890 | 5/1- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| William Farrell | 1890 | , | |||||
| William Farrell | farrel001wil | 1890 | 4/20-4/27 | Oakland Colonels | California League | Oakland, CA | |
| William Farrell | farrel001wil | 1890 | Fresno | Independent | Fresno, CA | ||
| James Farrington | farrin002jam | 1890 | 5/1-7/23 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Frank Favour | favour001fra | 1890 | 5/12-8/1 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Frank Fear | fear--001fra | 1890 | +5/13-6/19+ | Anderson | Indiana State League | Anderson, IN | |
| Frank Fear | fear--001fra | 1890 | 8/8 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Jack Fee | fee---001jac | 1890 | +5/27-8/29 | Olean | New York-Pennsylvania League | Olean, NY | |
| Charles Feeney | feeney001cha | 1890 | +5/11-5/14 | Port Huron | Michigan State League | Port Huron, MI | |
| Charles Feeney | feeney001cha | 1890 | 5/-7/5 | Marion/Logansport | Indiana State League | Marion, IN | |
| Charles Feeney | feeney001cha | 1890 | Springfield | Springfield, IL | |||
| Frank Fennelly | fennel001fra | 1890 | 45 g. | Brooklyn | American Association | Brooklyn, NY | |
| Ferguson | fergus002--- | 1890 | 5/28 | McKeesport | Tri-State League | McKeesport, PA | |
| Joe Fern | fern--001joe | 1890 | 4/30-5/18 | Canton Nadjys | Tri-State League | Canton, OH | |
| Joe Fern | fern--001joe | 1890 | 6/5-6/11+ | Albany | New York State League | Albany, NY | |
| Ferris | ferris009--- | 1890 | +6/24+ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Alex Ferson | ferson001ale | 1890 | 11 g. | Buffalo | Players League | Buffalo, NY | |
| Wally Fessenden | fessen001wal | 1890 | 5/1-7/7 | London Tecumsehs | International Association | London, ON | |
| Wally Fessenden | fessen001wal | 1890 | 7/2 | MLB Umpire | National League | , | |
| Wally Fessenden | fessen001wal | 1890 | 7/21-8/3 | g. | Syracuse | American Association | Syracuse, NY |
| Jim Field | field-001jim | 1890 | 4/19-7/31 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Jim Field | field-001jim | 1890 | 52 g. | Rochester | American Association | Rochester, NY | |
| Jocko Fields | fields001joc | 1890 | 129 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| George Fife | fife--000geo | 1890 | +8/31+ | Chicago West Ends | Chicago City League | Chicago, IL | |
| George Finke | finke-001geo | 1890 | New Orleans | Independent | New Orleans, LA | ||
| Finn | 1890 | Lansing | Michigan State League | Lansing, MI | |||
| Mike Finn | finn--002mic | 1890 | 3/23-11/23 | San Francisco Haverlys | California League | San Francisco, CA | |
| Michael Firle | firle-002mic | 1890 | 4/29-8/17 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Al Fisher | fisher001al- | 1890 | 4/29-8/17 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Chauncey Fisher | fisher005cha | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Chauncey Fisher | fisher005cha | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| Frank Fisher | fisher002fra | 1890 | 9/28 | Sacramento Senators | California League | Sacramento, CA | |
| Harry Fisher | fisher008har | 1890 | 4/30-7/9 | Springfield | Tri-State League | Springfield, OH | |
| Frank Fitch | fitch-002fra | 1890 | 5/1-7/5 | Marion/Logansport | Indiana State League | Marion, IN | |
| Fitzgerald | fitzge015--- | 1890 | -9/ | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Dennis Fitzgerald | fitzge002den | 1890 | 4/17-4/18 | 2 g. | Philadelphia | American Association | Philadelphia, PA |
| John Fitzgerald | fitzge006joh | 1890 | 4/18- | 11 g. | Rochester | American Association | Rochester, NY |
| John Fitzgerald | fitzge015joh | 1890 | 5/12-7/5 | Albany | New York State League | Albany, NY | |
| John Fitzgerald | fitzge015joh | 1890 | 7/- | Oneonta | New York State League | Oneonta, NY | |
| Joseph Fitzgerald | fitzge004jos | 1890 | 4/19-7/19 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Joseph Fitzgerald | fitzge004jos | 1890 | 7/23-9/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Mike Fitzgerald | fitzge001mik | 1890 | 4/30-8/8 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| T. M. Fitzgerald | 1890 | -6/ | Umpire | PacNW | , | ||
| Warren Fitzgerald | fitzge001war | 1890 | 5/29-10/9 | Seattle | Pacific Northwest League | Seattle, WA | |
| John Fitzsimmons | fitzsi001joh | 1890 | 4/30-8/2 | Mansfield | Tri-State League | Mansfield, OH | |
| John Fitzsimmons | fitzsi002jam | 1890 | 8/11-9/2 | Oneonta | New York State League | Oneonta, NY | |
| Charles Flack | flack-001cha | 1890 | 4/30-8/2 | Mansfield | Tri-State League | Mansfield, OH | |
| Charles Flack | flack-001cha | 1890 | +8/20-9/1 | Oneonta | New York State League | Oneonta, NY | |
| Charles Flack | flack-001cha | 1890 | +9/25-9/28+ | Utica | New York State League | Utica, NY | |
| Pat Flaherty | flaher005pat | 1890 | 3/30-6/7 | Houston Mud Cats | Texas League | Houston, TX | |
| Pat Flaherty | flaher005pat | 1890 | 7/13-10/1 | Seattle | Pacific Northwest League | Seattle, WA | |
| Ed Flanagan | flanag001tho | 1890 | 4/17-8/10 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Ed Flanagan | flanag001tho | 1890 | 8/12-9/29 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| Mart Flanagan | flanag001mar | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| Mart Flanagan | flanag001mar | 1890 | 6/23-9/15 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Thomas Flanagan | flanag001tho | 1890 | 4/18-5/17 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Thomas Flanagan | flanag001tho | 1890 | 6/25-6/29 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Thomas Flanagan | flanag002tho | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| Thomas Flanagan | flanag002tho | 1890 | 6/18-7/8 | Dayton Reds | Tri-State League | Dayton, OH | |
| Thomas Flanagan | flanag002tho | 1890 | 8/15-9/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Jack Flannery | flanne001joh | 1890 | St. Paul Picket | Independent | St. Paul, MN | ||
| William Flannery | flanne001wil | 1890 | 5/27-7/10 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Thomas Flood | flood-001tho | 1890 | 4/17-9/29 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Daniel Flynn | flynn-001joc | 1890 | 5/3 | Stockton | California League | Stockton, CA | |
| George Flynn | flynn-003geo | 1890 | Chicago | Chic City | Chicago, IL | ||
| George Flynn | flynn-003geo | 1890 | Sheboygan | Independent | Sheboygan, WI | ||
| Jack Fogarty | fogart005joh | 1890 | 3/23-11/23 | Stockton | California League | Stockton, CA | |
| Jim Fogarty | fogart001jim | 1890 | 91 g. | Philadelphia | Players League | Philadelphia, PA | |
| John Fogarty | fogart002joh | 1890 | 3/30-6/1 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| John Fogarty | fogart002joh | 1890 | +7/21-8/23 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| John Fogarty | fogart002joh | 1890 | +8/27+ | Umpire | NY-Pa | , | |
| John Fogarty | fogart002joh | 1890 | +9/1-9/4 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Foley | foley-022--- | 1890 | +8/?331+ | Chicago West Ends | Chicago City League | Chicago, IL | |
| Jeremiah Foley | foley-002jer | 1890 | TroyAmat | , | |||
| Jeremiah Foley | foley-002jer | 1890 | Nassau | Independent | Nassau, | ||
| Jeremiah Foley | foley-002jer | 1890 | 5/13-9/29+ | Troy | New York State League | Troy, NY | |
| L.J. Ford | ford--001l-- | 1890 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | ||
| Lawrence Ford | ford--001l-- | 1890 | 5/ | Aurora | Illinois-Iowa League | Aurora, IL | |
| Tom Ford | ford--001tom | 1890 | 5/6-8/25 | 1 g. | Columbus | American Association | Columbus, OH |
| Tom Ford | ford--001tom | 1890 | 10 g. | Brooklyn | American Association | Brooklyn, NY | |
| Frank Foreman | forema001fra | 1890 | 25 g. | Cincinnati | National League | Cincinnati, OH | |
| Tom Forster | forste001tom | 1890 | 4/19-8/13 | Hartford | Atlantic Association | Hartford, CT | |
| Forsythe | forsyt008--- | 1890 | 5/6-6/2 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Foster | foster009--- | 1890 | Calumet | UppPenin | Calumet, MI | ||
| Albert Foster | foster002alb | 1890 | +6/19+ | Madison | Independent | Madison, GA | |
| Elmer Foster | foster001elm | 1890 | 4/17-7/4 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Elmer Foster | foster001elm | 1890 | Houghton | MiSt | Houghton, MI | ||
| Elmer Foster | foster001elm | 1890 | -4/25 | 27 g. | Chicago | National League | Chicago, IL |
| Reddy Foster | foster001red | 1890 | Richmond | Independent | Richmond, VA | ||
| Reddy Foster | foster001red | 1890 | 5/30-7/7 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Frank Foulkrod | foulkr001fra | 1890 | 5/1-6/21 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Frank Foulkrod | foulkr001fra | 1890 | 6/23-7/5 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Frank Foulkrod | foulkr001fra | 1890 | 7/28-9/30 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Henry Fournier | fourni001hen | 1890 | 4/30-8/2 | Mansfield | Tri-State League | Mansfield, OH | |
| Henry Fournier | fourni001hen | 1890 | 8/11-9/2 | Oneonta | New York State League | Oneonta, NY | |
| Henry Fournier | fourni001hen | 1890 | 9/4-9/27+ | Troy | New York State League | Troy, NY | |
| Dave Foutz | foutz-001dav | 1890 | 129 g. | Brooklyn | National League | Brooklyn, NY | |
| Bud Fowler | fowler004joh | 1890 | 4/29-6/1 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Bud Fowler | fowler004joh | 1890 | 6/-7/31 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Bud Fowler | fowler004joh | 1890 | 8/1-9/3 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | |
| Bud Fowler | fowler004joh | 1890 | 9/5+ | Sterling/Galesburg/Burlington | Illinois-Iowa League | Burlington, IA | |
| George Fox | fox---001pad | 1890 | 5/1-5/24 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Ossie France | france001oss | 1890 | 3/30-6/3 | Houston Mud Cats | Texas League | Houston, TX | |
| Ossie France | france001oss | 1890 | 7/14 | 1 g. | Chicago | National League | Chicago, IL |
| Ossie France | france001oss | 1890 | 7/27-8/14 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Ossie France | france001oss | 1890 | 8/24-10/1 | Seattle | Pacific Northwest League | Seattle, WA | |
| George Frazier | frazie002geo | 1890 | 4/17-10/12 | g. | Syracuse | American Association | Syracuse, NY |
| Freeman | 1890 | Little Rock | Independent | Little Rock, AR | |||
| Julie Freeman | freema002--- | 1890 | 9/18 | Spokane | Pacific Northwest League | Spokane, WA | |
| Hon Fricken | fricke001ant | 1890 | New York Hackett Carhart | Independent | New York, NY | ||
| Hon Fricken | fricke001ant | 1890 | 5/22 | Albany | New York State League | Albany, NY | |
| Hon Fricken | fricke001ant | 1890 | 5/30-6/9+ | Oneonta | New York State League | Oneonta, NY | |
| Hon Fricken | fricke001ant | 1890 | +9/19-9/24+ | Troy | New York State League | Troy, NY | |
| Pat Friel | friel-001pat | 1890 | 5/2-7/7 | London Tecumsehs | International Association | London, ON | |
| Pat Friel | friel-001pat | 1890 | 7/13- | 62 g. | Syracuse | American Association | Syracuse, NY |
| Frieland | friela000--- | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| Danny Friend | friend002dan | 1890 | 5/- | Aurora | Illinois-Iowa League | Aurora, IL | |
| Danny Friend | friend002dan | 1890 | Dubuque | Illinois-Iowa League | Dubuque, IA | ||
| Danny Friend | friend002dan | 1890 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | ||
| Fritz | fritz-005--- | 1890 | 7/3-7/5 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| John Frye | frye--003joh | 1890 | 5/1-6/12 | York Monarchs | Eastern Interstate League | York, PA | |
| Frank Fudger | fudger001fre | 1890 | 3/23-11/23 | Stockton | California League | Stockton, CA | |
| Andy Fuller | fuller002and | 1890 | Waco Babies | Independent | Waco, TX | ||
| Billy Fuller | fuller002wil | 1890 | 4/29-8/14 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Billy Fuller | fuller002wil | 1890 | 8/23-10/12 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Harry Fuller | fuller003har | 1890 | 4/4-6/6 | Waco Babies | Texas League | Waco, TX | |
| Harry Fuller | fuller003har | 1890 | 4/29-8/15 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Harry Fuller | fuller003har | 1890 | Bradford | New York-Pennsylvania League | Bradford, PA | ||
| Shorty Fuller | fuller001sho | 1890 | 130 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Chris Fulmer | fulmer001chr | 1890 | 5/1-6/20 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Chris Fulmer | fulmer001chr | 1890 | 6/23-7/5 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Eddie Fusselback | fussel001edd | 1890 | 4/17-6/21 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| John Gaffney | gaffne002joh | 1890 | 135 g. | MLB Umpire | Players League | , | |
| Matt Gagen | gagen-001mat | 1890 | 6/25 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Matt Gagen | gagen-001mat | 1890 | Bowling Green | Independent | Bowling Green, KY | ||
| Gallagher | gallag037--- | 1890 | Albany | New York State League | Albany, NY | ||
| Andy Gallagher | gallag001and | 1890-92 | Lehigh Univ. | College | , | ||
| John Gallagher | gallag005joh | 1890 | +5/15+ | Muncie | Indiana State League | Muncie, IN | |
| John Gallagher | gallag005joh | 1890 | 5/-6/25+ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| John Gallagher | gallag005joh | 1890 | 7/- | Muncie | Indiana State League | Muncie, IN | |
| John Gallagher | gallag038--- | 1890 | 8/1-9/28+ | Utica | New York State League | Utica, NY | |
| Joseph Gallagher | gallag001jos | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| James Galligan | gallig001jam | 1890 | 5/3-6/9 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| John Galligan | gallig001joh | 1890 | 4/30-8/26 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Pud Galvin | galvin001pud | 1890 | 26 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| Bob Gamble | gamble001bob | 1890 | 5/3-7/19 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Bob Gamble | gamble001bob | 1890 | 7/23-9/29 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Pete Gandolfo | gandol001p-- | 1890 | +6/29-7/11+ | Helena | MontSt | Helena, MT | |
| Jack Gans | gans--001jac | 1890 | 4/30-7/8 | Dayton Reds | Tri-State League | Dayton, OH | |
| Jack Gans | gans--001jac | 1890 | 51 g. | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Jack Gans | gans--001jac | 1890 | 7/21-9/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Billy Ganss | gans--001bil | 1890 | +8/31+ | Cleveland Rocks | Amat | Cleveland, OH | |
| Charlie Ganzel | ganzel002cha | 1890 | 38 g. | Boston | National League | Boston, MA | |
| George Ganzel | ganzel001geo | 1890 | Washington | Independent | Washington, DC | ||
| Bill Garfield | garfie001bil | 1890 | 9 g. | Cleveland | National League | Cleveland, OH | |
| Ross Garrison | garris001ros | 1890 | +5/3 | Cuban Giants | Independent | Cuban, | |
| Ross Garrison | garris001ros | 1890 | 7/15-7/21 | York Monarchs | Eastern Interstate League | York, PA | |
| Bert Garvin | garvin001ber | 1890 | 4/29-6/1 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Bert Garvin | garvin001ber | 1890 | 6/4-6/25 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Bert Garvin | garvin001ber | 1890 | Dubuque | Illinois-Iowa League | Dubuque, IA | ||
| William Garvin | garvin001ber | 1890 | Peoria Canaries | Central Interstate League | Peoria, IL | ||
| Ed Gastfield | gastfi001ed- | 1890 | +8/31+ | Chicago West Ends | Chicago City League | Chicago, IL | |
| Hank Gastright | gastri001han | 1890 | 48 g. | Columbus | American Association | Columbus, OH | |
| Charles Gately | gately001cha | 1890 | Webb City | Independent | Webb City, MO | ||
| P.J. Gately | gately000pj- | 1890 | 6/2-7/17 | Albany | New York State League | Albany, NY | |
| Gatewood | 1890 | Salt Lake City | Independent | Salt Lake City, UT | |||
| Harry Gatewood | gatewo002har | 1890 | Nebraska City | Independent | Nebraska City, | ||
| Mike Gaule | gaule-001mik | 1890 | Richmond | Richmond, VA | |||
| Robert Gayle | gayle-001rob | 1890 | 8/8-9/17+ | Joliet | Illinois-Iowa League | Joliet, IL | |
| Robert Gayle | gayle-001rob | 1890 | Kokomo | Indiana State League | Kokomo, IN | ||
| George Geer | geer--001geo | 1890 | 4/30-8/2 | Mansfield | Tri-State League | Mansfield, OH | |
| George Geer | geer--001geo | 1890 | ?-9/3 | Oneonta | New York State League | Oneonta, NY | |
| Charlie Geggus | geggus001cha | 1890 | 6/26-7/27 | Umpire | Calif | , | |
| Charlie Geggus | geggus001cha | 1890 | 10/30-11/16 | Umpire | Calif | , | |
| Bill Geiss | geiss-001bil | 1890 | 5/1- | Ottawa | Illinois-Iowa League | Ottawa, IL | |
| Frank Genins | genins001c-- | 1890 | 4/18-9/30 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| William Gentleman | gentle001wil | 1890 | Johnstown-Gloversville | New York State League | Gloversville, NY | ||
| Bill George | george001bil | 1890 | Portland | Pacific Northwest League | Portland, OR | ||
| Bill George | george001bil | 1890 | 5/30-8/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Joe Gerhardt | gerhar001joe | 1890 | 99 g. | Brooklyn | American Association | Brooklyn, NY | |
| Joe Gerhardt | gerhar001joe | 1890 | 37 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Les German | german001les | 1890 | 4/19-8/23 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Les German | german001les | 1890 | 8/27- | 17 g. | Baltimore | American Association | Baltimore, MD |
| Tom Gettinger | gettin001tom | 1890 | 58 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Tom Gettinger | gettin001tom | 1890 | 7/19-7/21 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Tom Gettinger | gettin001tom | 1890 | 7/22-9/30 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Pretzels Getzien | getzie001pre | 1890 | 41 g. | Boston | National League | Boston, MA | |
| Gibbons | gibbon003--- | 1890 | 6/23 | McKeesport | Tri-State League | McKeesport, PA | |
| Charles Gibbs | gibbs-001cha | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| Charles Gibbs | gibbs-001cha | 1890 | 6/16 | Detroit Wolverines | International Association | Detroit, MI | |
| Gibson | gibson045--- | 1890 | 7/24 | Erie | New York-Pennsylvania League | Erie, PA | |
| J.N. Gibson | gibson001j-- | 1890 | 6/12-7/5 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Robert Gibson | gibson006rob | 1890 | Washington Col. | College | , | ||
| Robert Gibson | gibson006rob | 1890 | 6/4 | 1 g. | Chicago | National League | Chicago, IL |
| Robert Gibson | gibson006rob | 1890 | 6/16-7/18 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Robert Gibson | gibson006rob | 1890 | -8/7 | 3 g. | Pittsburgh | National League | Pittsburgh, PA |
| Whitey Gibson | gibson001whi | 1890 | 5/1-7/23 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Whitey Gibson | gibson001whi | 1890 | 7/26-8/26 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Gilbert | gilber025--- | 1890 | 8/6 | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Harry Gilbert | gilber003har | 1890 | 6/23 | 2 g. | Pittsburgh | National League | Pittsburgh, PA |
| John Gilbert | gilber006joh | 1890 | 6/23 | 2 g. | Pittsburgh | National League | Pittsburgh, PA |
| Pete Gilbert | gilber001pet | 1890 | 4/19-9/4 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Pete Gilbert | gilber001pet | 1890 | 9/6- | 29 g. | Baltimore | American Association | Baltimore, MD |
| Jack Gildea | gildea001joh | 1890 | +5/15-6/17+ | Oneonta | New York State League | Oneonta, NY | |
| Bob Gilks | gilks-001rob | 1890 | 130 g. | Cleveland | National League | Cleveland, OH | |
| Jim Gill | gill--001jim | 1890 | 5/1-5/23 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Jim Gill | gill--001jim | 1890 | 6/19-7/23 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Jim Gill | gill--001jim | 1890 | 7/31-8/6 | Lebanon | Atlantic Association | Lebanon, PA | |
| Gillen | gillen004--- | 1890 | 6/27 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Sam Gillen | gillen001sam | 1890 | 5/15-9/10 | Erie | New York-Pennsylvania League | Erie, PA | |
| Tom Gillen | gillen002tom | 1890 | Monmouth | Illinois-Iowa League | Monmouth, IL | ||
| Gillespie | gilles003--- | 1890 | 8/9 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| John Gillespie | gilles001jim | 1890 | Buffalo Athletics | Amat | Buffalo, NY | ||
| John Gillespie | gilles001jim | 1890 | 10/1 | 1 g. | Buffalo | Players League | Buffalo, NY |
| Barney Gilligan | gillig001bar | 1890 | New Hampshire | s-p | New Hampshire, NH | ||
| Lou Gilliland | gillil001lou | 1890 | 5/12-9/29 | New Haven | Atlantic Association | New Haven, CT | |
| Gillis | gillis005--- | 1890 | Calumet | UppPenin | Calumet, MI | ||
| James? Gilman | 1890 | Cleveland Stars | Independent | Cleveland, OH | |||
| Frank Gilmore | gilmor001fra | 1890 | 5/13 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Eddie Gilroy | gilroy001edd | 1890 | 4/19-4/28 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Eddie Gilroy | gilroy001edd | 1890 | +5/14-7/30 | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Jack Glasscock | glassc001jac | 1890 | 124 g. | New York | National League | New York, NY | |
| Bill Gleason | gleaso002bil | 1890 | 4/19-8/4 | Washington Senators | Atlantic Association | Washington, DC | |
| Bill Gleason | gleaso001bil | 1890 | 4/24 | 1 g. | Cleveland | Players League | Cleveland, OH |
| Kid Gleason | gleaso002wil | 1890 | 63 g. | Philadelphia | National League | Philadelphia, PA | |
| Larry Gleason | gleaso013--- | 1890 | +7/18 | Salt Lake City | Independent | Salt Lake City, UT | |
| Michael Gleason | gleaso001mic | 1890 | 5/13-8/4+ | Oneonta | New York State League | Oneonta, NY | |
| Gleim | gleim-001--- | 1890 | 5/18-5/19 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Bob Glenalvin | glenal001bob | 1890 | 4/30-7/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Bob Glenalvin | glenal001bob | 1890 | 7/12- | 66 g. | Chicago | National League | Chicago, IL |
| Ed Glenn | glenn-001ed- | 1890 | 4/18-9/29 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Wilfred Gloud | gloud-000wil | 1890 | -6/27 | Peru | Indiana State League | Peru, IN | |
| Jot Goar | goar--001jot | 1890 | Muncie | Indiana State League | Muncie, IN | ||
| John Godar | godar-001joh | 1890 | 3/23-11/23 | Sacramento Senators | California League | Sacramento, CA | |
| Goddard | goddar002--- | 1890 | +6/18-8/5 | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Tom Golden | golden001tho | 1890 | 5/1- | Aurora | Illinois-Iowa League | Aurora, IL | |
| Jake Goldie | goldie001j-- | 1890 | 4/29-6/1 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Jake Goldie | goldie001j-- | 1890 | 6/7-7/8 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Jake Goldie | goldie001j-- | 1890 | Muncie | Indiana State League | Muncie, IN | ||
| Jake Goldie | goldie001--- | 1890 | -9/ | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Walt Goldsby | goldsb001wal | 1890 | no g. | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Good | good--003--- | 1890 | 6/27 | York Monarchs | Eastern Interstate League | York, PA | |
| Herb Goodall | goodal001her | 1890 | 4/29-10/9 | 19 g. | Louisville | American Association | Louisville, KY |
| Herb Goodall | goodal001her | 1890 | 9/2-9/15 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Bill Goodenough | gooden001bil | 1890 | 3/23-11/23 | Sacramento Senators | California League | Sacramento, CA | |
| Mike Goodfellow | goodfe001mik | 1890 | 5/1-7/7 | Detroit Wolverines | International Association | Detroit, MI | |
| Mike Goodfellow | goodfe001mik | 1890 | 8/8-9/9 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| George Goodhart | goodha001geo | 1890 | 5/1-5/13 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| George Goodhart | goodha001geo | 1890 | 5/16-7/23 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Tom Goodhart | goodha001tom | 1890 | 5/20-5/24 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Frank Goodryder | goodry001fra | 1890 | 4/30-8/2 | Mansfield | Tri-State League | Mansfield, OH | |
| Frank Goodryder | goodry001fra | 1890 | 8/11-8/26+ | Oneonta | New York State League | Oneonta, NY | |
| Frank Goodryder | goodry001fra | 1890 | +9/21+ | Troy | New York State League | Troy, NY | |
| Gordon | gordon018--- | 1890 | 8/2 | McKeesport | Tri-State League | McKeesport, PA | |
| Gore | gore--005--- | 1890 | +5/16+ | Muncie | Indiana State League | Muncie, IN | |
| George Gore | gore--001geo | 1890 | 93 g. | New York | Players League | New York, NY | |
| Joe Gormley | gormle001joe | 1890 | Tamaqua | Independent | Tamaqua, PA | ||
| Louis Graff | graff-001lou | 1890 | Riverton | Independent | Riverton, NJ | ||
| Louis Graff | graff-001lou | 1890 | 6/23 | 1 g. | Syracuse | American Association | Syracuse, NY |
| Ernie Gragg | gragg-001ern | 1890 | 5/27-9/3+ | Joliet | Illinois-Iowa League | Joliet, IL | |
| James Graham | graham001jam | 1890 | 5/1-7/23 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| James Graham | graham001jam | 1890 | 7/31-9/25 | Lebanon | Atlantic Association | Lebanon, PA | |
| Frank Grant | grant-001fra | 1890 | 5/3 | Cuban Giants | Independent | Cuban, | |
| Frank Grant | grant-001fra | 1890 | 5/5-7/21 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Frank Grant | grant-001fra | 1890 | 7/22-9/30 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Billy Graulich | grauli001lew | 1890 | 5/2-7/23 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Billy Graulich | grauli001lew | 1890 | 7/31-8/6 | Lebanon | Atlantic Association | Lebanon, PA | |
| Lew Graulich | grauli001wil | 1890 | 6/27 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Lew Graulich | grauli001wil | 1890 | 6/21-7/18 | Umpire | EIntSt | , | |
| Eddie Graves | 1890 | U. of Pennsylvania | College | , | |||
| Gray | gray--035--- | 1890 | 7/28 | McKeesport | Tri-State League | McKeesport, PA | |
| Bill Gray | gray--001bil | 1890 | 5/14- | 34 g. | Philadelphia | National League | Philadelphia, PA |
| C. Gray | gray--000c-- | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| Charlie Gray | gray--006cha | 1890 | 4/23-6/23 | 5 g. | Pittsburgh | National League | Pittsburgh, PA |
| Charlie Gray | gray--006cha | 1890 | Meadville | New York-Pennsylvania League | Meadville, PA | ||
| Charlie Gray | gray--006cha | 1890 | 8/16-8/27 | Ottawa | Illinois-Iowa League | Ottawa, IL | |
| Jim Gray | gray--001jim | 1890 | 6/17-6/18 | 2 g. | Pittsburgh | Players League | Pittsburgh, PA |
| Jim Gray | gray--001jim | 1890 | 1 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Ed Green | green-002ed- | 1890 | 4/22-10/11 | 39 g. | Philadelphia | American Association | Philadelphia, PA |
| Harry Green | green-009har | 1890 | 5/1-7/5 | Marion/Logansport | Indiana State League | Marion, IN | |
| Harry Green | green-009har | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| Harry Green | green-009har | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| Jim Green | green-001jim | 1890 | 4/30-6/27 | Umpire | TriSt | , | |
| Jim Green | green-001jim | 1890 | 7/3-8/7 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Jim Green | green-001jim | 1890 | Umpire | NY-Pa | , | ||
| Jim Green | green-001jim | 1890 | 8/28-9/4 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| A.V. Greene | greene001a-- | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Bill Greenwood | greenw001bil | 1890 | 124 g. | Rochester | American Association | Rochester, NY | |
| John Griffin | griffi008joh | 1890 | Salt Lake City | Independent | Salt Lake City, UT | ||
| Mike Griffin | griffi001mik | 1890 | 115 g. | Philadelphia | Players League | Philadelphia, PA | |
| Sandy Griffin | griffi001san | 1890 | 107 g. | Rochester | American Association | Rochester, NY | |
| Clark Griffith | griffi003cla | 1890 | 4/19-9/28 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| John Grim | grim--002joh | 1890 | 5/1-7/5 | Toronto Canucks | International Association | Toronto, ON | |
| John Grim | grim--002joh | 1890 | 50 g. | Rochester | American Association | Rochester, NY | |
| George Grogan | grogan000geo | 1890 | Ft.Plain CLI | Independent | , | ||
| George Grogan | grogan000geo | 1890 | 6/7 | Albany | New York State League | Albany, NY | |
| Jack Grogan | grogan001jac | 1890 | Canton Nadjys | Tri-State League | Canton, OH | ||
| James Grogan | grogan001jam | 1890 | Umpire | MiSt | , | ||
| Grover | grover013--- | 1890 | +8/31+ | Chicago Garden Citys | Chicago City League | Chicago, IL | |
| Henry Gruber | gruber001hen | 1890 | 50 g. | Cleveland | Players League | Cleveland, OH | |
| Gueber | gueber001--- | 1890 | 7/2 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Louis Guinasso | guinas001lou | 1890 | 4/21-7/23 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Louis Guinasso | guinas001lou | 1890 | 8/4-8/13 | Lebanon | Atlantic Association | Lebanon, PA | |
| Tommy Guinness | 1890 | Troy | New York State League | Troy, NY | |||
| Ad Gumbert | gumber001ad- | 1890 | 45 g. | Boston | Players League | Boston, MA | |
| Billy Gumbert | gumber001bil | 1890 | Pittsburgh East End AC | Independent | Pittsburgh, PA | ||
| Billy Gumbert | gumber001bil | 1890 | 6/19- | 10 g. | Pittsburgh | National League | Pittsburgh, PA |
| Tom Gunning | gunnin001tom | 1890 | MLB Umpire | Players League | , | ||
| John Gunshannon | gunsha001joh | 1890 | +5/21-9/21+ | Troy | New York State League | Troy, NY | |
| Joe Gunson | gunson001joe | 1890 | 5/4-9/28 | Kansas City Blues | Western Association | Kansas City, MO | |
| Hack | 1890 | -9/19+ | Utica | New York State League | Utica, NY | ||
| Charlie Hackett | hacket001cha | 1890 | 4/17-6/2 | Kansas City Blues | Western Association | Kansas City, MO | |
| Mert Hackett | hacket001mer | 1890 | Norwich | Norwich, CT | |||
| Peter Hackett | hacket000pet | 1890 | 5/21-6/7 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Peter Hackett | hacket000pet | 1890 | +5/7,6/19-20+ | Bradford | New York-Pennsylvania League | Bradford, PA | |
| George Haddock | haddoc001geo | 1890 | 42 g. | Buffalo | Players League | Buffalo, NY | |
| Alf Hagerman | hagerm001alf | 1890 | 5/-6/19+ | Anderson | Indiana State League | Anderson, IN | |
| Harry Hahn | hahn--001har | 1890 | 5/1-7/16 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Hall | 1890 | 5/26-7/4 | Akron Akrons | Tri-State League | Akron, OH | ||
| Charles Hall | 1890 | 4/29-8/12 | Umpire | CIntSt | , | ||
| Charles Hall | 1890 | Umpire | West | , | |||
| Frank Hall | 1890 | Manistee | Michigan State League | Manistee, MI | |||
| James Hall | hall--041--- | 1890 | St. Louis | Independent | St. Louis, MO | ||
| Frank Haller | haller002fra | 1890 | 4/30-7/9 | Springfield | Tri-State League | Springfield, OH | |
| Frank Haller | haller002fra | 1890 | 7/25-8/7 | McKeesport | Tri-State League | McKeesport, PA | |
| Jocko Halligan | hallig001joc | 1890 | 5/13- | 57 g. | Buffalo | Players League | Buffalo, NY |
| Bill Hallman | hallma002wil | 1890 | 84 g. | Philadelphia | Players League | Philadelphia, PA | |
| Wilmer Hallowell | hallow001wil | 1890 | FlWinter | , | |||
| Charlie Hallstrom | hallst001cha | 1890 | +8/31+ | Chicago Whitings | Chicago City League | Chicago, IL | |
| Jim Halpin | halpin001jim | 1890 | 4/19-4/30 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| John Halpin | halpin002joh | 1890 | 5/1-9/ | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Charlie Hamburg | hambur003cha | 1890 | 4/18-10/14 | 133 g. | Louisville | American Association | Louisville, KY |
| Charlie Hamburg | hambur003cha | 1890 | Oswego | Independent | Oswego, NY | ||
| Billy Hamilton | hamilt006wil | 1890 | 123 g. | Philadelphia | National League | Philadelphia, PA | |
| Fatty Hamilton | hamilt001fat | 1890 | Weir City | Independent | Weir City, KS | ||
| Robert Hamilton | hamilt006rob | 1890 | 5/1-7/5 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay City, MI | |
| Robert Hamilton | hamilt006rob | 1890 | +8/5-9/10 | Erie | New York-Pennsylvania League | Erie, PA | |
| Sandy Hamilton | hamilt001ale | 1890 | Weir City | Independent | Weir City, KS | ||
| Stewart Hamilton | hamilt002ste | 1890 | Weir City | Independent | Weir City, KS | ||
| Hamlin | hamlin002--- | 1890 | 7/8 | Oneonta | New York State League | Oneonta, NY | |
| Handiboe | handib005--- | 1890 | 8/30-9/4 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Jim Handiboe | handib001jim | 1890 | 5/21-8/3 | Canton Nadjys | Tri-State League | Canton, OH | |
| Frank Hankinson | hankin001fra | 1890 | +6/26-9/21+ | Troy | New York State League | Troy, NY | |
| George Hanley | hanley001geo | 1890 | 3/23-11/23 | San Francisco Haverlys | California League | San Francisco, CA | |
| Ned Hanlon | hanlon001ned | 1890 | 121 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| Pat Hannivan | hanniv001pat | 1890 | 7/4+ | Albany | New York State League | Albany, NY | |
| M. Hanrahan | hanrah006--- | 1890 | +8/31+ | Chicago Rivals | Chicago City League | Chicago, IL | |
| William Hanrahan | hanrah002wil | 1890 | 4/18-6/14 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| William Hanrahan | hanrah002wil | 1890 | 6/29-9/26 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Ray Hansell | hansel001ray | 1890 | 5/1- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Ray Hansell | hansel001ray | 1890 | Nebraska City | Independent | Nebraska City, | ||
| Albert Hapeman | hapema001alb | 1890 | 5/15-8/16 | Stockton | California League | Stockton, CA | |
| Charles Harder | harder003--- | 1890 | +8/31+ | Chicago Garden Citys | Chicago City League | Chicago, IL | |
| Lou Hardie | hardie001lou | 1890 | 47 g. | Boston | National League | Boston, MA | |
| Harding | hardin012--- | 1890 | 8/1-8/7 | McKeesport | Tri-State League | McKeesport, PA | |
| James Harkins | harkin003jam | 1890 | 6/21-6/23 | Easton | Eastern Interstate League | Easton, PA | |
| Ray Harkness | harkne001ray | 1890 | 4/29-5/28 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Ray Harkness | harkne001ray | 1890 | Houghton | UppPenin | Houghton, MI | ||
| Ray Harkness | harkne001ray | 1890 | 9/10 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| George Harper | harper003joh | 1890 | 3/23-11/23 | Sacramento Senators | California League | Sacramento, CA | |
| James Harrington | harrin002jam | 1890 | 7/21-9/30 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Jerry Harrington | harrin001jer | 1890 | -2/11 | 65 g. | Cincinnati | National League | Cincinnati, OH |
| Jerry Harrington | harrin001jer | 1890 | 7/16-8/16 | 65 g. | Cincinnati | National League | Cincinnati, OH |
| William Harrington | harrin005wil | 1890 | 7/4 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Harris | harris084--- | 1890 | Muskegon | Michigan State League | Muskegon, MI | ||
| Charles Harris | harris014cha | 1890 | Webb City | Independent | Webb City, MO | ||
| Frank Harris | harris005fra | 1890 | Port Huron | Michigan State League | Port Huron, MI | ||
| Frank Harris | harris005fra | 1890 | 6/25-7/7 | Detroit Wolverines | International Association | Detroit, MI | |
| Hank Harris | harris001hen | 1890 | -8/18 | Portland | Pacific Northwest League | Portland, OR | |
| Abe Harrison | harris001abr | 1890 | 5/1-7/21 | York Monarchs | Eastern Interstate League | York, PA | |
| Bill Hart | hart--004wil | 1890 | 4/17-8/10 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Bill Hart | hart--004wil | 1890 | 8/12-9/28 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| Billy Hart | hart--002bil | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| Billy Hart | hart--002bil | 1890 | 6/12-7/4 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Billy Hart | hart--002bil | 1890 | 7/13-10/14 | 27 g. | St. Louis Browns | American Association | St. Louis, MO |
| Tom Hart | hart--004tho | 1890 | 5/15-8/3 | Canton Nadjys | Tri-State League | Canton, OH | |
| Fred Hartman | hartma003fre | 1890 | 5/10-6/18 | Springfield | Tri-State League | Springfield, OH | |
| Fred Hartman | hartma003fre | 1890 | 7/16-8/7 | McKeesport | Tri-State League | McKeesport, PA | |
| Jacob Hartmeyer | hartme001jac | 1890 | 5/2 | Joliet | Illinois-Iowa League | Joliet, IL | |
| Jacob Hartmeyer | hartme001jac | 1890 | 5/7-6/2 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Pat Hartnett | hartne001pat | 1890 | 4/18-5/15 | 14 g. | St. Louis Browns | American Association | St. Louis, MO |
| Pat Hartnett | hartne001pat | 1890 | Mystic | Independent | Mystic, CT | ||
| Pat Hartnett | hartne001pat | 1890 | 7/10-7/22 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Pete Hasney | hasney001pet | 1890 | 4/19-5/16 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Pete Hasney | hasney001pet | 1890 | 6/24-7/23 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Pete Hasney | hasney001pet | 1890 | 7/31-8/5 | Lebanon | Atlantic Association | Lebanon, PA | |
| Pete Hasney | hasney001pet | 1890 | 8/11-8/23 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Pete Hasney | hasney001pet | 1890 | 9/13 | 2 g. | Philadelphia | American Association | Philadelphia, PA |
| Bill Hassamaer | hassam001bil | 1890 | 4/4-6/? | Waco Babies | Texas League | Waco, TX | |
| Bill Hassamaer | hassam001bil | 1890 | 6/19-10/12 | Portland | Pacific Northwest League | Portland, OR | |
| Christy Hassett | hasset001chr | 1890 | +5/15-6/17+ | Oneonta | New York State League | Oneonta, NY | |
| Christy Hassett | hasset001chr | 1890 | Umpire | NYSt | , | ||
| Gil Hatfield | hatfie001gil | 1890 | 71 g. | New York | Players League | New York, NY | |
| Gil Hatfield | hatfie001gil | 1890 | 3 g. | Boston | Players League | Boston, MA | |
| Perry Havens | havens001per | 1890 | Webb City | Independent | Webb City, MO | ||
| Hawes | hawes-004--- | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Bill Hawes | hawes-001bil | 1890 | 4/17-7/29 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Bill Hawke | hawke-001bil | 1890 | Middleton | Independent | Middleton, MD | ||
| Bill Hawke | hawke-001bil | 1890 | Elkton | Independent | Elkton, MD | ||
| Pink Hawley | hawley001eme | 1890 | Wisconsin | Amat | Wisconsin, | ||
| Jackie Hayes | hayes-001jac | 1890 | -8/23 | 12 g. | Brooklyn | Players League | Brooklyn, NY |
| Ned Hayes | hayes-001ned | 1890 | Worcester | Worcester, MA | |||
| Fred Hayner | hayner001fre | 1890 | 8/19 | 1 g. | Pittsburgh | National League | Pittsburgh, PA |
| Hays | hays--002--- | 1890 | +6/25-6/26+ | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Charles Hazen | hazen-001cha | 1890 | 4/30-8/3 | Akron Akrons | Tri-State League | Akron, OH | |
| Ed Heagey | heagey001ed- | 1890 | 5/13 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Healey | healey003--- | 1890 | 6/15 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| R.P. Healey | healy-001p-- | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| Egyptian Healy | healy-001egy | 1890 | 48 g. | Toledo | American Association | Toledo, OH | |
| Charlie Heard | heard-001cha | 1890 | 4/23-5/8 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Charlie Heard | heard-001cha | 1890 | 7/14-8/30 | 12 g. | Pittsburgh | National League | Pittsburgh, PA |
| Heckard | heckar001--- | 1890 | 6/27 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Guy Hecker | hecker001guy | 1890 | 86 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Peter Heiman | 1890 | Racine | Racine, WI | ||||
| Bill Heine | heine-001wil | 1890 | +5/27-9/3+ | Olean | New York-Pennsylvania League | Olean, NY | |
| Bill Heine | heine-001wil | 1890 | +9/22+ | Wellsville | WestNY | Wellsville, NY | |
| W. S. Heineman | 1890 | no g. | Meadville | New York-Pennsylvania League | Meadville, PA | ||
| William Heingartner | heinga001wil | 1890 | 4/30-5/20 | Canton Nadjys | Tri-State League | Canton, OH | |
| William Heingartner | heinga001wil | 1890 | 6/3-6/29 | Canton Nadjys | Tri-State League | Canton, OH | |
| Jack Heinzman | heinzm001jac | 1890 | 5/1-6/19+ | Bluffton | Indiana State League | Bluffton, IN | |
| Jack Heinzman | heinzm001jac | 1890s | Louisville | semi-pro | Louisville, KY | ||
| Heiser | heiser002--- | 1890 | 5/1-6/4 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Charles Helfer | helfer001cha | 1890 | -8/21+ | 18 g. | Albany | New York State League | Albany, NY |
| Heller | heller007--- | 1890 | 5/?- | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Horace Helmbold | helmbo001hor | 1890 | 10/11 | 1 g. | Philadelphia | American Association | Philadelphia, PA |
| George Hemming | hemmin002geo | 1890 | 4/21- | 3 g. | Cleveland | Players League | Cleveland, OH |
| George Hemming | hemmin002geo | 1890 | 19 g. | Brooklyn | Players League | Brooklyn, NY | |
| George Hemming | hemmin002geo | 1890 | +6/18+ | Anderson | Indiana State League | Anderson, IN | |
| Ducky Hemp | hemp--001duc | 1890 | 21 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Ducky Hemp | hemp--001duc | 1890 | 6/13-8/9 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Ducky Hemp | hemp--001duc | 1890 | -8/25 | 9 g. | Syracuse | American Association | Syracuse, NY |
| Ducky Hemp | hemp--001duc | 1890 | 9/8-9/29 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| Hemphill | hemphi002--- | 1890 | 5/15+ | Cobleskill | New York State League | Cobleskill, NY | |
| Sydney Hemphill | hemphi001syd | 1890 | 5/20-5/21 | Easton | Eastern Interstate League | Easton, PA | |
| Hardie Henderson | hender004har | 1890 | 4/17-7/11 | Umpire | WestA | , | |
| Hardie Henderson | hender004har | 1890 | 7/17-8/5 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| John Hendricks | hendri006joh | 1890 | Ottumwa | Illinois-Iowa League | Ottumwa, IA | ||
| Ed Hengel | hengle001edw | 1890 | 3/30-5/5 | Umpire | Tx | , | |
| Ed Hengel | hengle001edw | 1890 | 5/24-7/5 | Umpire | Int | , | |
| Ed Hengel | hengle001edw | 1890 | 7/16-9/29 | Umpire | WestA | , | |
| Moxie Hengel | hengle001mox | 1890 | 4/17-7/4 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Moxie Hengel | hengle001mox | 1890 | Houghton | Independent | Houghton, MI | ||
| Moxie Hengel | hengle001mox | 1890 | 9/16-9/22 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Hengle | hengle001--- | 1890 | Calumet | UppPenin | Calumet, MI | ||
| John Hennegan | henneg001joh | 1890 | 5/11 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| John Hennegan | henneg001joh | 1890 | +6/27-9/22+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Joseph Hennessey | hennes003jos | 1890 | 4/4-5/26 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| Joseph Hennessey | hennes003jos | 1890 | Joplin | Independent | Joplin, MO | ||
| Henry | 1890 | Norfolk | Norfolk, VA | ||||
| George Henry | henry-002geo | 1890 | 4/19-7/23 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| George Henry | henry-002geo | 1890 | Atlantic City | Independent | Atlantic City, NJ | ||
| John Henry | henry-007joh | 1890 | 4/19-5/28 | Hartford | Atlantic Association | Hartford, CT | |
| John Henry | henry-007joh | 1890 | - 8/7 | 37 g. | New York | National League | New York, NY |
| John Henry | henry-007joh | 1890 | 8/25-8/26 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| John Hergus | hergus001joh | 1890 | Muskegon | Michigan State League | Muskegon, MI | ||
| Joseph Herndon | herndo001jos | 1890 | 5/2-5/30 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Joseph Herndon | herndo001jos | 1890 | 8/15-8/30 | Olean | New York-Pennsylvania League | Olean, NY | |
| Tom Hernon | hernon001tom | 1890 | 5/3-10/12 | Seattle | Pacific Northwest League | Seattle, WA | |
| Joseph Herr | herr--001jos | 1890 | 4/4-5/27 | Waco Babies | Texas League | Waco, TX | |
| Joseph Herr | herr--001jos | 1890 | 14 g. | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Joseph Herr | herr--001jos | 1890 | -6/25 | 12 g. | St. Louis Browns | American Association | St. Louis, MO |
| George Hersh | hersh-001geo | 1890 | Princeton U. | College | , | ||
| R. Herzer | herzer000r-- | 1890 | 5/12-6/27+ | Albany | New York State League | Albany, NY | |
| Jack Hess | hess--003joh | 1890 | 5/15-9/15 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Tom Hess | hess--001tho | 1890 | 5/13-9/30 | Albany | New York State League | Albany, NY | |
| Hey | hey---002--- | 1890 | 6/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Mike Hickey | hickey001mik | 1890-91 | Holy Cross Col. | College | , | ||
| Mike Hickey | hickey001mik | 1890 | Brattleboro | Independent | Brattleboro, VT | ||
| Higginbotham | higgin001--- | 1890 | 11/14-11/23 | Stockton | California League | Stockton, CA | |
| Bill Higgins | higgin001bil | 1890 | 5/1-6/23 | Detroit Wolverines | International Association | Detroit, MI | |
| Bill Higgins | higgin001bil | 1890 | -10/2 | 67 g. | St. Louis Browns | American Association | St. Louis, MO |
| Bill Higgins | higgin001bil | 1890 | 1 g. | Syracuse | American Association | Syracuse, NY | |
| Bill Higgins | higgin002bil | 1890 | Cincinnati Muldoons | Independent | Cincinnati, OH | ||
| Bill Higgins | higgin002bil | 1890 | 5/15-8/9 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| James Hightower | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| John Hiland | hiland001joh | 1890 | 5/2-7/7 | London Tecumsehs | International Association | London, ON | |
| Hill | hill--070--- | 1890 | +5/15+ | Muncie | Indiana State League | Muncie, IN | |
| Belden Hill | hill--003bel | 1890 | 4/19-8/4 | Washington Senators | Atlantic Association | Washington, DC | |
| Belden Hill | hill--003bel | 1890 | 8/7-8/26 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Belden Hill | hill--003bel | 1890 | 8/27-9/4 | 9 g. | Baltimore | American Association | Baltimore, MD |
| Belden Hill | hill--003bel | 1890 | 9/8-9/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Benjamin Hill | hill--002ben | 1890 | 3/23-7/3 | Oakland Colonels | California League | Oakland, CA | |
| Benjamin Hill | hill--002ben | 1890 | 7/20-8/24 | San Francisco Haverlys | California League | San Francisco, CA | |
| Frank Hill | 1890 | Houghton | UppPenin | Houghton, MI | |||
| Lewis Hill | hill--002lew | 1890 | 4/30-8/2 | Umpire | TriSt | , | |
| James Hillery | hiller002jam | 1890 | 5/1-6/? | Ottawa | Illinois-Iowa League | Ottawa, IL | |
| James Hillery | hiller002jam | 1890 | 6/20-6/30 | Umpire | Il-Ia | , | |
| James Hillery | hiller002jam | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Charley Hinds | hinds-001cha | 1890 | 5/22 | Stockton | California League | Stockton, CA | |
| Cicero Hiner | hiner-001cic | 1890 | Canton Nadjys | Tri-State League | Canton, OH | ||
| Hines | hines-037--- | 1890 | Muskegon | Independent | Muskegon, MI | ||
| Hines | hines-037--- | 1890 | +6/24+ | Elkhart | Indiana State League | Elkhart, IN | |
| Hunkey Hines | hines-001hun | 1890 | 4/29-8/3 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Hunkey Hines | hines-001hun | 1890 | +9/2+ | Aurora | Illinois-Iowa League | Aurora, IL | |
| J.A. Hines | hines-000ja- | 1890 | 5/1-6/14+ | Bluffton | Indiana State League | Bluffton, IN | |
| Mike Hines | hines-001mik | 1890 | 5/3-7/6 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Paul Hines | hines-001pau | 1890 | 31 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Paul Hines | hines-001pau | 1890 | 69 g. | Boston | National League | Boston, MA | |
| Hiser | hiser-002--- | 1890 | 4/30-5/17 | Springfield | Tri-State League | Springfield, OH | |
| Mike Hobrecht | hobrec001mik | 1890 | 4/30-8/3 | Akron Akrons | Tri-State League | Akron, OH | |
| Mike Hobrecht | hobrec001mik | 1890 | Bradford | New York-Pennsylvania League | Bradford, PA | ||
| E. G. Hocking | 1890 | Hancock | UppPenin | Hancock, MI | |||
| George Hodgman | hodgma001geo | 1890 | 5/28-7/7 | Hartford | Atlantic Association | Hartford, CT | |
| George Hodson | hodson002geo | 1890 | 5/13-7/23 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Bill Hoffer | hoffer003wil | 1890 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | ||
| Charles Hoffman | hoffma001sam | 1890 | 5/3-8/10 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Charles Hoffman | hoffma001sam | 1890 | 9/13-11/23 | Stockton | California League | Stockton, CA | |
| Frank Hoffman | hoffma001fra | 1890 | 3/30-6/4 | Houston Mud Cats | Texas League | Houston, TX | |
| Frank Hoffman | hoffma001fra | 1890 | 6/21-11/23 | Sacramento Senators | California League | Sacramento, CA | |
| Chick Hofford | hoffor001jos | 1890 | 4/21-9/30 | New Haven | Atlantic Association | New Haven, CT | |
| John Hofford | hoffor001joh | 1890 | 5/12-6/2+ | Utica | New York State League | Utica, NY | |
| John Hofford | hoffor001joh | 1890 | Knoxville | Independent | Knoxville, TN | ||
| John Hogan | hogan-008joh | 1890 | 6/16-6/26+ | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Mortimer Hogan | hogan-001mor | 1890 | +8/31+ | Umpire | ChicCity | , | |
| Hogarth | hogart003--- | 1890 | 5/6-5/17 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| William Hoggins | hoggin001wil | 1890 | Pine Bluff | Independent | Pine Bluff, AR | ||
| George Hogreiver | hogrie001geo | 1890 | 5/2-9/? | 40 g. | Ottumwa | Illinois-Iowa League | Ottumwa, IA |
| Bill Holbert | holber001bil | 1890 | -10/4 | 132 g. | MLB Umpire | Players League | , |
| Will Holland | hollan007wil | 1890 | 3/31-6/6 | Dallas Hams | Texas League | Dallas, TX | |
| Will Holland | hollan007wil | 1890 | Joplin | Independent | Joplin, MO | ||
| Will Holland | hollan007wil | 1890 | 6/21-9/29 | Kansas City Blues | Western Association | Kansas City, MO | |
| Bug Holliday | hollid001bug | 1890 | 131 g. | Cincinnati | National League | Cincinnati, OH | |
| Edward Holliday | hollid001edw | 1890 | 3/23-11/23 | Stockton | California League | Stockton, CA | |
| Wallace Hollingsworth | hollin001wal | 1890 | Peru | Indiana State League | Peru, IN | ||
| Wallace Hollingsworth | hollin001wal | 1890 | Indianapolis | Independent | Indianapolis, IN | ||
| Holmes | holmes037--- | 1890 | 5/12-9/21+ | Albany | New York State League | Albany, NY | |
| Benjamin Holmes | 1890 | +5/3+ | Cuban Giants | Independent | Cuban, | ||
| Honan | honan-002--- | 1890 | Calumet | UppPenin | Calumet, MI | ||
| Marty Honan | honan-001mar | 1890 | Chicago Whitings | Chicago City League | Chicago, IL | ||
| Marty Honan | honan-001mar | 1890 | 10/3 | 1 g. | Chicago | National League | Chicago, IL |
| Charlie Hoover | hoover001cha | 1890 | 4/18-6/1 | Kansas City Blues | Western Association | Kansas City, MO | |
| Charlie Hoover | hoover001cha | 1890 | 8/14-9/29 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| William Hoover | hoover001bus | 1890 | 4/18-9/29 | Kansas City Blues | Western Association | Kansas City, MO | |
| William Hoover | 1890 | 6/29-9/30 | Umpire | WestA | , | ||
| George Hopkins | 1890 | Chicago Unions | Independent | Chicago, IL | |||
| W.L. Horan | horan-001w-- | 1890 | 9/29 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Horin | horin-001--- | 1890 | 9/29 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Jack Horner | horner002jac | 1890 | 4/19-9/30 | New Haven | Atlantic Association | New Haven, CT | |
| James Hornibrook | hornlb001--- | 1890s | Little Rock | Independent | Little Rock, AR | ||
| Joe Hornung | hornun001mik | 1890 | 120 g. | New York | National League | New York, NY | |
| Charles Hoskins | hoskin002cha | 1890 | 4/29-6/29 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Charles Hoskins | hoskin002cha | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| H.G. Hostetter | hostet001hg- | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Charlie Householder | househ002cha | 1890 | 5/27-7/12 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Charlie Householder | househ002cha | 1890 | Richmond | Independent | Richmond, VA | ||
| Charlie Householder | househ002cha | 1890 | Hampton Soldiers | Independent | Hampton, VA | ||
| Houseman | housem000--- | 1890 | +8/31+ | Chicago Garden Citys | Chicago City League | Chicago, IL | |
| George Hoverter | hovert001geo | 1890 | 5/1-5/24 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Sam Hoverter | hovert001sam | 1890 | +5/23+ | Kokomo | Indiana State League | Kokomo, IN | |
| Bert Howard | howard002ber | 1890 | Exeter | Exeter, | |||
| F.L. Howard | howard001f-- | 1890 | 5/3-6/28 | Portland | Pacific Northwest League | Portland, OR | |
| Henry Howe | howe--001hen | 1890 | 4/23-6/26 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Henry Howe | howe--001hen | 1890 | Hancock | Independent | Hancock, MI | ||
| Shorty Howe | howe--001sho | 1890 | 5/3-5/27 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Shorty Howe | howe--001sho | 1890 | 6/17- | 19 g. | New York | National League | New York, NY |
| Billy Hoy | hoy---001wil | 1890 | 122 g. | Buffalo | Players League | Buffalo, NY | |
| Clarence Hoyt | hoyt--001cla | 1890 | 5/1- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Clarence Hoyt | hoyt--001cla | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | ||
| J. S. Hubbard | 1890 | Helena | Independent | Helena, MT | |||
| Hudson | hudson001--- | 1890 | Calumet | UppPenin | Calumet, MI | ||
| Nat Hudson | hudson001nat | 1890 | 4/19-7/10 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Vince Hudson | hudson001vin | 1890 | 5/16-7/23 | Umpire | EIntSt | , | |
| Huey | huey--001--- | 1890 | 8/11-8/16 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| George Hughbanks | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| Hugh Hughbanks | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| Hughes | hughes034--- | 1890 | 6/21 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Jack Hughes | hughes001jac | 1890 | 5/1- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Jack Hughes | hughes001jac | 1890 | -9/ | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Mickey Hughes | hughes007mic | 1890 | - 8/28 | 9 g. | Brooklyn | National League | Brooklyn, NY |
| Mickey Hughes | hughes007mic | 1890 | 6 g. | Philadelphia | American Association | Philadelphia, PA | |
| Jim Hughey | hughey001jim | 1890 | 5/-7/5 | Marion/Logansport | Indiana State League | Marion, IN | |
| Jim Hughey | hughey001jim | 1890 | Fon du Lac | WiSt | Fon du Lac, | ||
| Jim Hughey | hughey001jim | 1890 | 9/6-9/10 | Joliet | Illinois-Iowa League | Joliet, IL | |
| Billy Hulen | hulen-001bil | 1890 | Port Townsend | Independent | Port Townsend, WA | ||
| Harry Hulin | hulin-001har | 1890 | 5/1-6/10 | Detroit Wolverines | International Association | Detroit, MI | |
| Harry Hulin | hulin-001har | 1890 | 6/16-6/20 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Harry Hulin | hulin-001har | 1890 | 6/23-7/5 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| Harry Hulin | hulin-001har | 1890 | 7/22-10/1 | Portland | Pacific Northwest League | Portland, OR | |
| Cary Hull | hull--001car | 1890 | 5/16-5/17 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Cary Hull | hull--001car | 1890 | Wauseon | Independent | Wauseon, OH | ||
| Cary Hull | hull--001car | 1890 | 9/2-9/15 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Harry Humby | 1890 | Pine Bluff | Independent | Pine Bluff, AR | |||
| Al Hungler | hungle001al- | 1890 | 5/3-5/25 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Hunold | hunold001--- | 1890 | 6/26 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Bill Hunter | hunter001bil | 1890 | Chicago | ChicCity | Chicago, IL | ||
| George Hupp | huff--001geo | 1890 | Fort Dodge | Independent | Fort Dodge, KS | ||
| George Hupp | huff--001geo | 1890 | 5/3-8/19+ | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Barney Hurley | hurley001bar | 1890 | NbSt | , | |||
| Jerry Hurley | hurley002jer | 1890 | 8 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| Michael Hurley | hurley001mic | 1890 | 4/29-6/5 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Tim Hurst | hurst-001tim | 1890 | 4/23-6/22 | Umpire | WestA | , | |
| Tim Hurst | hurst-001tim | 1890 | 6/23-9/30 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Bill Husted | husted001bil | 1890 | 4/29-10/4 | 18 g. | Philadelphia | Players League | Philadelphia, PA |
| Jack Huston | huston001jac | 1890 | 3/30-6/7 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| Jack Huston | huston001jac | 1890 | 6/21-10/12 | Spokane | Pacific Northwest League | Spokane, WA | |
| Ed Hutchinson | hutchi002ed- | 1890 | 3/30-6/7 | Houston Mud Cats | Texas League | Houston, TX | |
| Ed Hutchinson | hutchi002ed- | 1890 | 6/17-10/2 | 4 g. | Chicago | National League | Chicago, IL |
| Bill Hutchison | hutchi001bil | 1890 | 71 g. | Chicago | National League | Chicago, IL | |
| Huzzy | huzzy-000--- | 1890 | 5/-5/19 | Elkhart | Indiana State League | Elkhart, IN | |
| Igoe | igoe--001--- | 1890 | 5/25-5/26 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Albert Ike | ike---001alb | 1890 | 5/1-7/5 | Toronto Canucks | International Association | Toronto, ON | |
| William Inglis | inglis001wil | 1890 | 5/2-8/15 | Aurora | Illinois-Iowa League | Aurora, IL | |
| Bert Inks | inks--001ber | 1890 | Goshen | Independent | Goshen, IN | ||
| Bert Inks | inks--001ber | 1890 | 5/8-5/18 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Bert Inks | inks--001ber | 1890 | 6/12-7/5 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Bert Inks | inks--001ber | 1890 | -9/ | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Will Inks | inks--001wil | 1890 | Goshen | Independent | Goshen, IN | ||
| Ben Ireland | irelan001ben | 1890 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | ||
| Ben Ireland | irelan001ben | 1890 | +5/13-6/19+ | Anderson | Indiana State League | Anderson, IN | |
| Arthur Irwin | irwin-001art | 1890 | 96 g. | Boston | Players League | Boston, MA | |
| Bill Irwin | irwin-001bil | 1890 | 4/30 | Canton Nadjys | Tri-State League | Canton, OH | |
| Charlie Irwin | irwin-001cha | 1890 | +8/31+ | Chicago Rivals | Chicago City League | Chicago, IL | |
| John Irwin | irwin-001joh | 1890 | 77 g. | Buffalo | Players League | Buffalo, NY | |
| Charles Isaacson | isaacs004cha | 1890 | 3/23-8/8 | Oakland Colonels | California League | Oakland, CA | |
| Charles Isaacson | isaacs004cha | 1890 | 8/21-8/23 | Sacramento Senators | California League | Sacramento, CA | |
| Charles Isaacson | isaacs004cha | 1890 | 10/16-11/23 | San Francisco Haverlys | California League | San Francisco, CA | |
| Nick Ivory | ivory-001nic | 1890 | 5/2-5/21 | Ottawa | Illinois-Iowa League | Ottawa, IL | |
| Nick Ivory | ivory-001nic | 1890 | 6/12-6/13 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Nick Ivory | ivory-001nic | 1890 | -7/ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Nick Ivory | ivory-001nic | 1890 | +8/1-9/3 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | |
| Nick Ivory | ivory-001nic | 1890 | 9/5-9/8+ | Sterling/Galesburg/Burlington | Illinois-Iowa League | Burlington, IA | |
| Jackson | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| Andy Jackson | jackso005and | 1890 | +5/3+ | Cuban Giants | Independent | Cuban, | |
| Andy Jackson | jackso005and | 1890 | 6/3-7/21 | York Monarchs | Eastern Interstate League | York, PA | |
| Bill Jackson | jackso001bil | 1890 | 5/2-7/21 | York Monarchs | Eastern Interstate League | York, PA | |
| Oscar Jackson | jackso001osc | 1890 | 6/12-7/21 | York Monarchs | Eastern Interstate League | York, PA | |
| Alex Jacobs | jacobs001ale | 1890 | 5/2-5/16 | Easton | Eastern Interstate League | Easton, PA | |
| Alex Jacobs | jacobs001ale | 1890 | 6/5-6/24 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Harry Jacoby | jacoby001har | 1890 | 6/24-7/5 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Charley James | 1890 | Fort Dodge | Independent | Fort Dodge, KS | |||
| Lawrence James | james-001law | 1890 | 5/1-5/29 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| William James | james-016wil | 1890 | Norw? | ? | , | ||
| William James | james-016wil | 1890 | 6/7-7/5 | Easton | Eastern Interstate League | Easton, PA | |
| Jack Jamieson | jamies001jac | 1890 | Ottawa | Independent | Ottawa, IA | ||
| Jamison | 1890 | 5/20-8/9 | Umpire | Tri-St | , | ||
| Jamison | 1890 | Umpire | NY-Pa | , | |||
| Duke Jantzen | jantze001a-- | 1890 | 4/17-9/28 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Frank Jellen | jellen001fra | 1890 | Omaha Non Pariels | Independent | Omaha, NE | ||
| Frank Jellen | jellen001fra | 1890 | 9/28 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Hughie Jennings | jennin001hug | 1890 | Lehighton | Independent | Lehighton, PA | ||
| Hughie Jennings | jennin001hug | 1890 | 6/16-7/5 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Hughie Jennings | jennin001hug | 1890 | 9/8-9/29 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Walter Jennison | jennis001wal | 1890 | 6/4-6/15 | Umpire | CIntSt | , | |
| Jesselson | jessel000--- | 1890 | +8/31+ | Chicago West Ends | Chicago City League | Chicago, IL | |
| Fred Jevne | jevne-001fre | 1890 | 5/3-6/30 | Spokane | Pacific Northwest League | Spokane, WA | |
| Fred Jevne | jevne-001fre | 1890 | 8/14-8/24 | Umpire | WestA | , | |
| John Jimison | 1890 | 3/30-4/14 | Umpire | Tx | , | ||
| Ralph Joanes | joanes001ral | 1890 | Colorado | Colorado, CO | |||
| Ralph Joanes | joanes001ral | 1890 | +6/-9/6+ | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Johns | johns-010--- | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Peter Johns | johns-001--- | 1890 | 4/30-6/20 | McKeesport | Tri-State League | McKeesport, PA | |
| Peter Johns | johns-001--- | 1890 | 7/4-7/8 | Canton Nadjys | Tri-State League | Canton, OH | |
| Johnson | johnso231--- | 1890 | -5/ | Elkhart | Indiana State League | Elkhart, IN | |
| Bootsey Johnson | johnso000boo | 1890 | 5/21-6/25 | Elkhart | Indiana State League | Elkhart, IN | |
| Claude Johnson | johnso014cla | 1890 | 6/20-7/2 | Canton Nadjys | Tri-State League | Canton, OH | |
| Claude Johnson | johnso014cla | 1890 | 7/25 | McKeesport | Tri-State League | McKeesport, PA | |
| Dick Johnson | johnso003dic | 1890 | 4/29-8/10 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Lefty Johnson | johnso037wil | 1890 | 4/19-9/8 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Lefty Johnson | johnso001bil | 1890 | - 4/27 | 24 g. | Baltimore | American Association | Baltimore, MD |
| Louis Johnson | johnso005lou | 1890 | by 5/12 | Peru | Indiana State League | Peru, IN | |
| Spud Johnson | johnso001spu | 1890 | 135 g. | Columbus | American Association | Columbus, OH | |
| Johnston | johnst027--- | 1890 | Pullman YMCA | Independent | Pullman, IL | ||
| Dick Johnston | johnst001dic | 1890 | 2 g. | Boston | Players League | Boston, MA | |
| Dick Johnston | johnst001dic | 1890 | 77 g. | New York | Players League | New York, NY | |
| Jones | jones-184--- | 1890 | +5/23+ | Kokomo | Indiana State League | Kokomo, IN | |
| Jones | jones-087--- | 1890 | 7/17 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Jones | jones-186--- | 1890 | +5/29-6/5+ | Cobleskill | New York State League | Cobleskill, NY | |
| Abe Jones | 1890 | Chicago Unions | Independent | Chicago, IL | |||
| Alex Jones | jones-002ale | 1890 | 5/15-9/13 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Bumpus Jones | jones-011cha | 1890 | 5/2-5/30 | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Bumpus Jones | jones-011cha | 1890 | 6/16-9/20 | Aurora | Illinois-Iowa League | Aurora, IL | |
| Charles Jones | jones-022cha | 1890 | 5/1-7/9 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Charley Jones | jones-018cha | 1890 | 4/19- | 121 g. | MLB Umpire | Players League | , |
| Charlie Jones | jones-019cha | 1890 | 4/19-7/28 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Charlie Jones | jones-019cha | 1890 | 8/7-8/26+ | Albany | New York State League | Albany, NY | |
| Charlie Jones | jones-019cha | 1890 | 8/30-9/30 | Lebanon | Atlantic Association | Lebanon, PA | |
| Claude Jones | jones-002cla | 1890 | 5/1- | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Claude Jones | jones-002cla | 1890 | Fort Dodge | Independent | Fort Dodge, KS | ||
| Frank Jones | jones-002fra | 1890 | 5/1-7/24 | Kokomo | Indiana State League | Kokomo, IN | |
| Henry Jones | jones-006hen | 1890 | 5/28 | MLB Umpire | National League | , | |
| Henry Jones | jones-007hen | 1890 | 4/22-5/31 | 5 g. | Pittsburgh | National League | Pittsburgh, PA |
| Henry Jones | jones-007hen | 1890 | 6/5-7/24 | McKeesport | Tri-State League | McKeesport, PA | |
| Henry Jones | jones-006hen | 1890 | 7/28-9/10 | Erie | New York-Pennsylvania League | Erie, PA | |
| Joseph Jones | jones-010jos | 1890 | 5/1-7/21 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Joseph Jones | jones-010jos | 1890 | 7/22-9/30 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Mike Jones | jones-002mik | 1890 | 5/2-7/7 | London Tecumsehs | International Association | London, ON | |
| Mike Jones | jones-002mik | 1890 | 8/1-8/12 | 3 g. | Louisville | American Association | Louisville, KY |
| Paul Jones | jones-009pau | 1890 | Bradford | New York-Pennsylvania League | Bradford, PA | ||
| Silas Jones | jones-001sil | 1890 | 5/15-8/9 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Silas Jones | jones-001sil | 1890 | Dunkirk | Independent | Dunkirk, NY | ||
| W. Jones | 1890 | +9/27+ | Pullman YMCA | Independent | Pullman, IL | ||
| Jordan | jordan012--- | 1890 | Calumet | UppPenin | Calumet, MI | ||
| Mike Jordan | jordan001mik | 1890 | 4/19-8/4 | Washington Senators | Atlantic Association | Washington, DC | |
| Mike Jordan | jordan001mik | 1890 | 8/21- | 37 g. | Pittsburgh | National League | Pittsburgh, PA |
| William F. Jordan | jordan001w-- | 1890 | 5/1- | Joliet | Illinois-Iowa League | Joliet, IL | |
| Bill Joyce | joyce-001bil | 1890 | 4/19- | 133 g. | Brooklyn | Players League | Brooklyn, NY |
| Judson | 1890 | +9/22+ | Wellsville | WNYSt | Wellsville, NY | ||
| Jupiter | jupite001--- | 1890 | +5/3+ | Cuban Giants | Independent | Cuban, | |
| Kane | kane--052--- | 1890 | 5/12+ | Utica | New York State League | Utica, NY | |
| Jerry Kane | kane--004jer | 1890 | 5/2-6/25 | 8 g. | St. Louis Browns | American Association | St. Louis, MO |
| Jerry Kane | kane--004jer | 1890 | 5/9-5/30 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Jerry Kane | kane--004jer | 1890 | Mt. Vernon | Independent | Mt. Vernon, IL | ||
| Jerry Kane | kane--004jer | 1890 | 7/31-8/10 | Umpire | CIntSt | , | |
| Jerry Kane | kane--004jer | 1890 | Umpire | Il-Ia | , | ||
| Henry Kappel | kappel001hei | 1890 | 4/18-9/30 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Joe Kappel | kappel001joe | 1890 | -9/8 | 56 g. | Philadelphia | American Association | Philadelphia, PA |
| Joe Katz | katz--002jos | 1890 | 4/29-8/15 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Joe Katz | katz--002jos | 1890 | Monmouth | Illinois-Iowa League | Monmouth, IL | ||
| Joe Katz | katz--002jos | 1890 | 9/14-10/12 | Seattle | Pacific Northwest League | Seattle, WA | |
| Kearney | kearne010--- | 1890 | +6/18-9/12+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Tom Kearns | kearns001tom | 1890 | 4/17-9/9 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Ed Keas | keas--001ed- | 1890 | 5/1- | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Ed Keas | keas--001ed- | 1890 | Helena | Independent | Helena, MT | ||
| Ed Keating | 1890 | Pittsburgh Grays | Independent | Pittsburgh, PA | |||
| Forest Keay | keay--002for | 1890 | 4/19-6/1 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Forest Keay | keay--002for | 1890 | 6/3-8/7 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Forest Keay | keay--002for | 1890 | 8/20 | Albany | New York State League | Albany, NY | |
| Keefe | 1890 | St. John Shamrocks | New Brunsw. | St. John, NB | |||
| George Keefe | keefe-002geo | 1890 | 25 g. | Buffalo | Players League | Buffalo, NY | |
| George Keefe | 1890 | St. John Shamrocks | NewBruns | St. John, NB | |||
| John Keefe | keefe-001joh | 1890 | 4/28-10/11 | 43 g. | Syracuse | American Association | Syracuse, NY |
| Tim Keefe | keefe-002tim | 1890 | 30 g. | New York | Players League | New York, NY | |
| Willie Keeler | keeler001wil | 1890 | Plainfield | Independent | Plainfield, NJ | ||
| Keenan | keenan001--- | 1890 | 5/22 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Jack Keenan | keenan001kid | 1890 | Huntington | Independent | Huntington, WV | ||
| Jim Keenan | keenan001jim | 1890 | 54 g. | Cincinnati | National League | Cincinnati, OH | |
| Frank Keffer | keffer001fra | 1890 | 4/19- | 2 g. | Syracuse | American Association | Syracuse, NY |
| Adam Keifer | keifer001ada | 1890 | +6/3-6/26+ | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Adam Keifer | keifer001ada | 1890 | 8/15-9/4 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Billy Keim | keim--001bil | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | ||
| Louis Keim | keim--001lou | 1890 | 5/1- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Keinan | keinan001--- | 1890 | 5/28 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Keineth | keinet000--- | 1890 | 9 g. | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Kelley | kelley052--- | 1890 | 5/21 | Elkhart | Indiana State League | Elkhart, IN | |
| Albert Kelley | kelley001alb | 1890 | 5/12-5/16 | Mansfield | Tri-State League | Mansfield, OH | |
| George Kelley | kelley003geo | 1890 | 3/23- | 14 g. | Stockton | California League | Stockton, CA |
| George Kelley | kelley003geo | 1890 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | ||
| George Kelley | kelley003geo | 1890 | 11/16 | Stockton | California League | Stockton, CA | |
| Richard Kelley | kelley003ric | 1890 | +6/2-9/15 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Frank Kellogg | kellog001sis | 1890 | 5/15-5/20 | Canton Nadjys | Tri-State League | Canton, OH | |
| Frank Kellogg | kellog001sis | 1890 | +9/22+ | Wellsville | WNYSt | Wellsville, NY | |
| Nate Kellogg | kellog001nat | 1890 | +6/28+ | 38 g. | Olean | New York-Pennsylvania League | Olean, NY |
| Kelly | kelly-128--- | 1890 | +6/20+ | Utica | New York State League | Utica, NY | |
| Fred Kelly | kelly-003fre | 1890 | 5/1-7/23 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| George Kelly | kelly-007geo | 1890 | Stockton | California League | Stockton, CA | ||
| George Kelly | kelly-005geo | 1890 | Muskegon | Michigan State League | Muskegon, MI | ||
| George Kelly | kelly-005geo | 1890 | 6/26-6/28 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| J. J. Kelly | 1890 | Dubuque | Illinois-Iowa League | Dubuque, IA | |||
| John Kelly | kelly-012joh | 1890 | Mobile Hoopers | Semi-pro | Mobile, AL | ||
| King Kelly | kelly-002kin | 1890 | 90 g. | Boston | Players League | Boston, MA | |
| George Kelps | kelps-001geo | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| John Kelty | kelty-001joh | 1890 | 4/19-7/12 | 59 g. | Pittsburgh | National League | Pittsburgh, PA |
| Kennedy | kenned069--- | 1890 | 5/15-5/24 | Cobleskill | New York State League | Cobleskill, NY | |
| Brickyard Kennedy | kenned005wil | 1890 | 4/18-7/17 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Doc Kennedy | kenned001doc | 1890 | +6/2-9/30 | Utica | New York State League | Utica, NY | |
| Ed Kennedy | kenned001ed- | 1890 | 4/19-7/28 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Ed Kennedy | kenned001ed- | 1890 | 8/28-9/30 | Lebanon | Atlantic Association | Lebanon, PA | |
| Jim Kennedy | kenned001jim | 1890 | 4/17-8/25 | g. | Brooklyn | American Association | Brooklyn, NY |
| M. Kennedy | kenned002m-- | 1890 | +5/14-7/1+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| M. Kennedy | kenned002m-- | 1890 | 7/29-9/11 | Cobleskill | New York State League | Cobleskill, NY | |
| Ted Kennedy | kenned001ted | 1890 | 4/18-5/23 | Umpire | WestA | , | |
| Ted Kennedy | kenned001ted | 1890 | 6/23-7/25 | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| William Kennedy | 1890 | Ogdensburg | Independent | Ogdensburg, NY | |||
| Bert Kenney | kenney001ber | 1890 | +6/28-9/3+ | Olean | New York-Pennsylvania League | Olean, NY | |
| Bert Kenney | kenney001ber | 1890 | +9/27 | Wellsville | WestNY | Wellsville, NY | |
| Matt Keogan | keogan001mat | 1890 | 6/-7/ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| John Kerins | kerins001joh | 1890 | 4/23 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| John Kerins | kerins001joh | 1890 | 47 g. | MLB Umpire | American Association | , | |
| John Kerins | kerins001joh | 1890 | -6/15 | 18 g. | St. Louis Browns | American Association | St. Louis, MO |
| A.C. Kermaes | kermae000ac- | 1890 | Johnstown-Gloversville | New York State League | Gloversville, NY | ||
| Kermiss | kermis000--- | 1890 | +6/2-7/8+ | Utica | New York State League | Utica, NY | |
| Kerr | kerr--023--- | 1890 | 5/-5/ | Elkhart | Indiana State League | Elkhart, IN | |
| Frank Keyes | keyes-001fra | 1890 | 4/4-4/8 | Austin Senators | Texas League | Austin, TX | |
| Wm. Kidd | kidd--001wm- | 1890 | Norw.-semi-pro | s-p | , | ||
| Wm. Kidd | kidd--001wm- | 1890 | 7/10-7/31 | Hartford | Atlantic Association | Hartford, CT | |
| Bill Kienzle | kienzl001bil | 1890 | 4/19-4/28 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Henry Killeen | killee002hen | 1890 | Utica | New York State League | Utica, NY | ||
| Frank Killen | killen002fra | 1890 | 10 g. | Manistee | Michigan State League | Manistee, MI | |
| Frank Killen | killen002fra | 1890 | 6/25-7/4 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Frank Killen | killen002fra | 1890 | 7/12-9/27 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Charles Kilpatrick | 1890 | Umpire | Il-Ia | , | |||
| Matt Kilroy | kilroy001mat | 1890 | 31 g. | Boston | Players League | Boston, MA | |
| Mike Kilroy | kilroy001mik | 1890 | 5/25-11/2 | Stockton | California League | Stockton, CA | |
| Mike Kilroy | kilroy001mik | 1890 | 11/9-11/23 | Sacramento Senators | California League | Sacramento, CA | |
| John Kimball | kimbal004joh | 1890 | -5/- | Peru | Indiana State League | Peru, IN | |
| King | king--078--- | 1890 | 7/7-7/8+ | Albany | New York State League | Albany, NY | |
| Silver King | king--001sil | 1890 | 58 g. | Chicago | Players League | Chicago, IL | |
| William King | 1890 | Chicago Unions | Independent | Chicago, IL | |||
| Moses Kingsley | kingsl001mos | 1890 | MiSt | , | |||
| Moses Kingsley | kingsl001mos | 1890 | Olean | New York-Pennsylvania League | Olean, NY | ||
| Ed Kinnare | kinnar002--- | 1890 | +8/31+ | Chicago Rivals | Chicago City League | Chicago, IL | |
| Kinney | kinney004--- | 1890 | 6/7 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| John Kinney | kinney010--- | 1890 | +8/31+ | Chicago West Ends | Chicago City League | Chicago, IL | |
| Mike Kinney | kinney001mik | 1890 | Meriden Southington | Independent | Meriden, CT | ||
| Mike Kinney | kinney001mik | 1890 | 7/4 | Hartford | Atlantic Association | Hartford, CT | |
| Tom Kinslow | kinslo001tom | 1890 | 64 g. | Brooklyn | Players League | Brooklyn, NY | |
| Walt Kinzie | kinzie001wal | 1890 | +8/31+ | Chicago Whitings | Chicago City League | Chicago, IL | |
| Lee Kipp | kipp--002lee | 1890 | Kearney | Independent | Kearney, NE | ||
| Lee Kipp | kipp--002lee | 1890 | -9/ | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| John Kirby | kirby-002joh | 1890 | 4/29-6/26 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| John Kirby | kirby-002joh | 1890 | 6/28-9/2 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Albert Kirmes | kirmes001alb | 1890 | 31 g. | Utica | New York State League | Utica, NY | |
| George Kittle | kittle001geo | 1890 | 4/4-6/6 | Waco Babies | Texas League | Waco, TX | |
| George Kittle | kittle001geo | 1890 | 6/23-7/4 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Malachi Kittridge | kittri001mal | 1890 | 4/19- | 96 g. | Chicago | National League | Chicago, IL |
| Klein | klein-013--- | 1890 | 5/1-5/13 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| William Klem | klem--001bil | 1890s | Rochester | s-p | Rochester, NY | ||
| William Klem | klem--001bil | 1890s | Palmyra | s-p | Palmyra, NY | ||
| William Klem | klem--001bil | 1890s | Augusta | s-p | Augusta, ME | ||
| Wilson Kline | kline-002wil | 1890 | 5/1-5/24 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Kling | kling-003--- | 1890 | 4/29-5/1 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Bill Kling | kling-001bil | 1890 | 9/15-9/17 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Klingersmith | klinge010--- | 1890 | 6/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Gus Klopf | klopf-001gus | 1890 | 5/3-10/12 | Spokane | Pacific Northwest League | Spokane, WA | |
| Klose | klose-000--- | 1890 | +5/23+ | Kokomo | Indiana State League | Kokomo, IN | |
| Billy Klusman | klusma001bil | 1890 | -5/8 | 15 g. | St. Louis Browns | American Association | St. Louis, MO |
| Billy Klusman | klusma001bil | 1890 | 5/26-8/2 | Mansfield | Tri-State League | Mansfield, OH | |
| Billy Klusman | klusma001bil | 1890 | 8/11-8/26+ | Oneonta | New York State League | Oneonta, NY | |
| Billy Klusman | klusma001bil | 1890 | 16 g. | Utica | New York State League | Utica, NY | |
| Knapp | knapp-002--- | 1890 | Port Huron | Michigan State League | Port Huron, MI | ||
| Frank Knauss | knauss001fra | 1890 | 5/3-6/20 | Detroit Wolverines | International Association | Detroit, MI | |
| Frank Knauss | knauss001fra | 1890 | 6/25- | 37 g. | Columbus | American Association | Columbus, OH |
| Phil Knell | knell-001phi | 1890 | 36 g. | Philadelphia | Players League | Philadelphia, PA | |
| Joe Knight | knight002jos | 1890 | -10/3 | 127 g. | Cincinnati | National League | Cincinnati, OH |
| Lon Knight | knight001lon | 1890 | -10/4 | 123 g. | MLB Umpire | Players League | , |
| Ed Knouff | knouff001ed- | 1890 | 6/24-7/5 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Ed Knouff | knouff001ed- | 1890 | 8/23-8/26 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Jimmy Knowles | knowle001jim | 1890 | 123 g. | Rochester | American Association | Rochester, NY | |
| George Knowlton | knowlt001geo | 1890 | +5/28-6/11+ | Troy | New York State League | Troy, NY | |
| Andy Knox | knox--001and | 1890 | 9/19-10/12 | 21 g. | Philadelphia | American Association | Philadelphia, PA |
| Dick Knox | knox--002ric | 1890 | 5/12-9/21+ | Troy | New York State League | Troy, NY | |
| W. Kohnie | kohnie001w-- | 1890 | Lansing | Michigan State League | Lansing, MI | ||
| Andrew Kolley | kolley001and | 1890 | 4/29-7/8 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| William Kolley | kelley006w-- | 1890 | Paducah | Independent | Paducah, KY | ||
| Harry Koons | koons-001har | 1890 | 5/2-7/19 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Harry Koons | koons-001har | 1890 | 7/22-8/4 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Harry Koons | koons-001har | 1890 | 8/12-9/29 | Lebanon | Atlantic Association | Lebanon, PA | |
| Charlie Krehmeyer | krehme001cha | 1890 | 4/1-6/7 | Houston Mud Cats | Texas League | Houston, TX | |
| Gus Krehmeyer | 1890 | 5/4-5/29+ | Umpire | Tx | , | ||
| J. Monroe Kreiter | 1890 | 5/1-7/23 | York Monarchs | Eastern Interstate League | York, PA | ||
| Bill Krieg | krieg-001bil | 1890 | 4/17-9/29 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Gus Krock | krock-001gus | 1890 | -7/26 | 4 g. | Buffalo | Players League | Buffalo, NY |
| G. Kroger | kroege000g-- | 1890 | Muncie | Indiana State League | Muncie, IN | ||
| Ernest Krueger | kruege002ern | 1890 | Muskegon | Michigan State League | Muskegon, MI | ||
| Bill Kuehne | kuehne001bil | 1890 | 128 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| George Kurtz | kurtz-001geo | 1890 | +7/9-7/10+ | Joliet | Illinois-Iowa League | Joliet, IL | |
| Kurz | kurz--000--- | 1890 | +8/31+ | Chicago Garden Citys | Chicago City League | Chicago, IL | |
| A.D. Kynar | kynar-001a-- | 1890 | +5/23+ | Kokomo | Indiana State League | Kokomo, IN | |
| LaBarge | labarg001--- | 1890 | 6/16-6/18 | Joliet | Illinois-Iowa League | Joliet, IL | |
| George LaChance | lachan001geo | 1890 | Waterbury | Independent | Waterbury, CT | ||
| William Lackey | lackey002wil | 1890 | Columbus NE Stars | Amateur | Columbus, OH | ||
| William Lackey | lackey002wil | 1890 | 10/2 | 1 g. | Philadelphia | American Association | Philadelphia, PA |
| Steve Ladew | ladew-001ste | 1890 | St. Louis High Steps | Independent | St. Louis, MO | ||
| Steve Ladew | ladew-001ste | 1890 | 5/20-9/26+ | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Fred Lake | 1890 | Moncton | NewBrunsw. | Moncton, | |||
| Dan Lally | lally-001dan | 1890 | 4/19-9/13 | New Haven | Atlantic Association | New Haven, CT | |
| Gus Land | land--001gus | 1890 | 4/4-6/6 | Waco Babies | Texas League | Waco, TX | |
| Gus Land | land--001gus | 1890 | 6/24-10/12 | Portland | Pacific Northwest League | Portland, OR | |
| Michael Landmann | landma001m-- | 1890 | Port Jervis | Independent | Port Jervis, NY | ||
| Franklin Lang | lang--002fra | 1890 | 4/19-9/30 | New Haven | Atlantic Association | New Haven, CT | |
| Bill Lange | lange-001bil | 1890 | Port Townsend | Independent | Port Townsend, WA | ||
| Fred Lange | lange-001fre | 1890 | 11/9 | Oakland Colonels | California League | Oakland, CA | |
| Bob Langsford | langsf001bob | 1890 | 4/29-8/9 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Henry Lanser | lanser001hen | 1890 | 4/30-7/24 | McKeesport | Tri-State League | McKeesport, PA | |
| Henry Lanser | lanser001hen | 1890 | +8/5-9/10 | Erie | New York-Pennsylvania League | Erie, PA | |
| Addison Lansing | 1890 | U. of Pennsylvania | College | , | |||
| William Lapham | lapham002wil | 1890 | 7/23-9/27 | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Henry Larkin | larkin001hen | 1890 | 125 g. | Cleveland | Players League | Cleveland, OH | |
| Sam LaRocque | larocq001sam | 1890 | 111 g. | Pittsburgh | National League | Pittsburgh, PA | |
| John Lasch | lasch-001joh | 1890 | 5/12-5/30+ | Albany | New York State League | Albany, NY | |
| John Lasch | lasch-001joh | 1890 | 6/27-7/5 | Oneonta | New York State League | Oneonta, NY | |
| Arlie Latham | latham002wal | 1890 | 52 g. | Chicago | Players League | Chicago, IL | |
| Arlie Latham | latham002wal | 1890 | 41 g. | Cincinnati | National League | Cincinnati, OH | |
| Paul Latouche | latouc001pau | 1890 | 5/2-6/21 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Paul Latouche | latouc001pau | 1890 | 6/25-7/4 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| Paul Latouche | latouc000alb | 1890 | 7/16-8/6+ | Oneonta | New York State League | Oneonta, NY | |
| Chuck Lauer | lauer-001chu | 1890 | - 4/28 | 2 g. | Chicago | National League | Chicago, IL |
| Chuck Lauer | lauer-001chu | 1890 | 5/3-8/1 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Laughran/Lo | laughr001--- | 1890 | Muskegon | Michigan State League | Muskegon, MI | ||
| Floyd Lauman | lauman001flo | 1890 | 4/28-5/21 | New Haven | Atlantic Association | New Haven, CT | |
| Johnny Lavin | lavin-001joh | 1890 | Lansing | Michigan State League | Lansing, MI | ||
| Johnny Lavin | lavin-001joh | 1890 | Ishpeming | Independent | Ishpeming, MI | ||
| Lawlis | lawlis000--- | 1890 | 5/17-6/25 | Elkhart | Indiana State League | Elkhart, IN | |
| Jack Lawlor | lawlor001joh | 1890 | Johnstown-Gloversville | New York State League | Gloversville, NY | ||
| Edgar Lawrence | lawren001edg | 1890 | 5/- | Peru | Indiana State League | Peru, IN | |
| Mike Lawrence | lawren001wal | 1890 | 5/- | Peru | Indiana State League | Peru, IN | |
| Mike Lawrence | lawren001wal | 1890 | -6/30 | Bluffton | Indiana State League | Bluffton, IN | |
| Mike Lawrence | lawren001wal | 1890 | 7/1- | Muncie | Indiana State League | Muncie, IN | |
| Al Lawson | lawson001al- | 1890 | 4/19-5/1 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Al Lawson | lawson001al- | 1890 | 5/13-6/2 | 1 g. | Boston | National League | Boston, MA |
| Al Lawson | lawson001al- | 1890 | 2 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Al Lawson | lawson001al- | 1890 | 6/26-7/22 | Cobleskill | New York State League | Cobleskill, NY | |
| Al Lawson | lawson001al- | 1890 | 7/31-8/7 | Albany | New York State League | Albany, NY | |
| Al Lawson | lawson001al- | 1890 | 9/3 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Al Lawson | lawson001al- | 1890 | +9/22+ | Wellsville | WNY | Wellsville, NY | |
| Henry Leach | 1890 | 6/20-7/26 | MLB Umpire | Players League | , | ||
| Bob Leadley | leadle001rob | 1890 | 5/1-7/7 | Detroit Wolverines | International Association | Detroit, MI | |
| Bob Leadley | leadle001rob | 1890 | 58 g. | Cleveland | National League | Cleveland, OH | |
| William Leamon | leamon001wil | 1890 | 4/30-7/29 | McKeesport | Tri-State League | McKeesport, PA | |
| William Leamon | leamon001wil | 1890 | 26 g. | Olean | New York-Pennsylvania League | Olean, NY | |
| William Leamon | leamon001wil | 1890 | +8/5-9/10 | Erie | New York-Pennsylvania League | Erie, PA | |
| Leary | 1890 | Oneonta | New York State League | Oneonta, NY | |||
| Son Leas | leas--000son | 1890 | 5/-6/ | Peru | Indiana State League | Peru, IN | |
| Martin Lee | lee---007mar | 1890 | Wausen | Independent | Wausen, WI | ||
| Llewellyn Legg | legg--001lle | 1890 | 5/5-5/30 | Seattle | Pacific Northwest League | Seattle, WA | |
| Mike Lehane | lehane001mik | 1890 | 4/17- | 140 g. | Columbus | American Association | Columbus, OH |
| John Leighton | leight002joh | 1890 | 5/2-7/7 | London Tecumsehs | International Association | London, ON | |
| John Leighton | leight002joh | 1890 | 7/12-7/20 | 7 g. | Syracuse | American Association | Syracuse, NY |
| Jack Leiper | leiper001jac | 1890 | 6/13-7/5 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Jack Leiper | leiper001jac | 1890 | 8/9-8/26 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Harry Lemons | lemons001har | 1890 | +5/23+ | Kokomo | Indiana State League | Kokomo, IN | |
| Lena | 1890 | Peru | Indiana State League | Peru, IN | |||
| Frank Leonard | leonar001fra | 1890 | 4/17-9/30 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Oliver LeRett | lerett001oli | 1890 | 5/15-5/30 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Leslie | leslie013--- | 1890 | +8/31+ | Chicago Garden Citys | Chicago City League | Chicago, IL | |
| Mike Lestrange | lestra001mik | 1890 | +5/15-6/10 | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Tom Letcher | letche001tom | 1890 | 20 g. | Joliet | Illinois-Iowa League | Joliet, IL | |
| Joe Leveque | levequ001joe | 1890 | 11/7 | Stockton | California League | Stockton, CA | |
| Charlie Levis | levis-001cha | 1890 | 4/4-6/6 | Waco Babies | Texas League | Waco, TX | |
| Charlie Levis | levis-001cha | 1890 | 6/18-6/23 | Umpire | CIntSt | , | |
| David Levy | levy--001dav | 1890 | 5/18 | Stockton | California League | Stockton, CA | |
| David Levy | levy--001dav | 1890 | 5/20-8/10 | Portland | Pacific Northwest League | Portland, OR | |
| David Levy | levy--001dav | 1890 | 9/26 | Stockton | California League | Stockton, CA | |
| David Levy | levy--001dav | 1890 | 1 g. | Oakland Colonels | California League | Oakland, CA | |
| Rube Levy | levy--001reu | 1890 | 3/23-11/23 | San Francisco Haverlys | California League | San Francisco, CA | |
| Lewis | lewis-002--- | 1890 | 7/12 | 1 g. | Buffalo | Players League | Buffalo, NY |
| Lewis | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| Lewis | lewis-074--- | 1890 | +5/15+ | Muncie | Indiana State League | Muncie, IN | |
| Lewis | lewis-024--- | 1890 | 7/7 | Springfield | Tri-State League | Springfield, OH | |
| Frank Lewis | lewis-074--- | 1890 | Muncie | Indiana State League | Muncie, IN | ||
| Frank Lewis | lewis-003fra | 1890 | Monmouth | Illinois-Iowa League | Monmouth, IL | ||
| Fred Lewis | lewis-003fre | 1890 | +6/20+ | Utica | New York State League | Utica, NY | |
| M. Lewis | lewis-001m-- | 1890 | 4/30-5/2 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Ted Lewis | lewis-001edw | 1890 | Marietta | Independent | Marietta, OH | ||
| Ted Lewis | lewis-001edw | 1890-93 | Marietta College | College | , | ||
| Ezra Lincoln | lincol001ezr | 1890 | 5/2-8/12 | 15 g. | Cleveland | National League | Cleveland, OH |
| Ezra Lincoln | lincol001ezr | 1890 | 3 g. | Syracuse | American Association | Syracuse, NY | |
| James Lincoln | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| Jack Lindsay | lindsa001jac | 1890 | 5/8-5/31 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| James Lindsay | lindsa000jam | 1890 | 8/- | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Frank Linnehan | linneh001fra | 1890 | Umpire | NYSt | , | ||
| Little | little009--- | 1890 | 6/9 | Mansfield | Tri-State League | Mansfield, OH | |
| Little | little005--- | 1890 | 8/9-8/26 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Llewellyn | llewel002--- | 1890 | 6/9-6/14 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| F.R. Lloyd | lloyd-002f-- | 1890 | 5/8-5/10 | Seattle | Pacific Northwest League | Seattle, WA | |
| Loftus | loftus009--- | 1890 | 5/20-6/20 | Canton Nadjys | Tri-State League | Canton, OH | |
| Martin Loftus | loftus001mar | 1890 | 6/12-7/5 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Tom Loftus | loftus002tom | 1890 | Cincinnati | National League | Cincinnati, OH | ||
| Joe Lohbeck | lohbec001jos | 1890 | 4/17-9/29 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Pete Lohman | lohman001geo | 1890 | 3/23-11/23 | Oakland Colonels | California League | Oakland, CA | |
| James Lombard | lombar002jam | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| James Lombard | lombar002jam | 1890 | Peru | Indiana State League | Peru, IN | ||
| Billy Long | long--001bil | 1890 | 4/29-8/17 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Dan Long | long--003dan | 1890 | 4/19-8/26 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Dan Long | long--003dan | 1890 | 8/27-10/15 | 21 g. | Baltimore | American Association | Baltimore, MD |
| Herman Long | long--001her | 1890 | 101 g. | Boston | National League | Boston, MA | |
| Jim Long | long--002jim | 1890 | 5/27-7/6 | Canton Nadjys | Tri-State League | Canton, OH | |
| Jim Long | long--002jim | 1890 | Bowling Green | Independent | Bowling Green, KY | ||
| W. W. Long | 1890 | U. of Pennsylvania | College | , | |||
| Jacob Lookabaugh | lookab001jac | 1890 | 4/5-11/22 | San Francisco Haverlys | California League | San Francisco, CA | |
| Benjamin Lotz | lotz--001ben | 1890 | 5/1-6/28 | Easton | Eastern Interstate League | Easton, PA | |
| James Loughlin | loughl001jam | 1890 | Johnstown-Gloversville | New York State League | Gloversville, NY | ||
| E. T. Love | 1890 | New Albany | Independent | New Albany, IN | |||
| Tom Lovett | lovett001tom | 1890 | 44 g. | Brooklyn | National League | Brooklyn, NY | |
| Bobby Lowe | lowe--002rob | 1890 | 4/19- | 52 g. | Boston | National League | Boston, MA |
| Pat Luby | luby--001pat | 1890 | 3/30-6/7 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| Pat Luby | luby--001pat | 1890 | 6/16- | 36 g. | Chicago | National League | Chicago, IL |
| William Lucas | lucas-005wil | 1890 | 5/3-10/12 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Con Lucid | lucid-001con | 1890 | +5/23+ | Kokomo | Indiana State League | Kokomo, IN | |
| Con Lucid | lucid-001con | 1890 | 7/6 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Luckey | luckey002--- | 1890 | Cincinnati Shamrocks | Independent | Cincinnati, OH | ||
| Luckey | luckey002--- | 1890 | +6/21-7/8 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Luebka | luebke001--- | 1890 | Reading Pastimes | Independent | Reading, PA | ||
| Al Lukens | lukens001al- | 1890 | Lehighton | LehighVal | Lehighton, PA | ||
| J.E. Lundy | lundy-000je- | 1890 | 5/15-5/21+ | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Lunt | lunt--003--- | 1890 | 6/7 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Luke Lutenberg | lutenb001luk | 1890 | 5/2-7/7 | London Tecumsehs | International Association | London, ON | |
| Luke Lutenberg | lutenb001luk | 1890 | 7/11-8/9 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Luke Lutenberg | lutenb001luk | 1890 | 8/10-8/15 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Lynch | lynch-048--- | 1890 | 9/2 | Oneonta | New York State League | Oneonta, NY | |
| Lynch | lynch-046--- | 1890 | +8/31+ | Chicago Brands | Chicago City League | Chicago, IL | |
| E. Lynch | 1890 | 8/12-9/3 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| Henry Lynch | lynch-003hen | 1890 | 4/19-5/14 | Hartford | Atlantic Association | Hartford, CT | |
| Henry Lynch | lynch-003hen | 1890 | 5/22-8/7 | New Haven | Atlantic Association | New Haven, CT | |
| Jack Lynch | lynch-001jac | 1890 | 4/19 | 1 g. | Brooklyn | American Association | Brooklyn, NY |
| Michael Lynch | lynch-010mic | 1890 | 5/3-7/20 | Spokane | Pacific Northwest League | Spokane, WA | |
| Michael Lynch | lynch-010mic | 1890 | 9/-9/, | 3 g. | Umpire | PacNW | , |
| O. Lynch | 1890 | 7/22-9/8+ | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| Patrick Lynch | lynch-002pat | 1890 | 5/1-9/24+ | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Tom Lynch | lynch-002tom | 1890 | 4/23-5/2 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Tom Lynch | lynch-002tom | 1890 | 5/5-8/6 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Lyon | lyon--001--- | 1890 | 6/17 | Hartford | Atlantic Association | Hartford, CT | |
| Denny Lyons | lyons-002den | 1890 | 88 g. | Philadelphia | American Association | Philadelphia, PA | |
| Fred Lyons | lyons-001fre | 1890 | Indianapolis Daltons | Independent | Indianapolis, IN | ||
| Fred Lyons | lyons-001fre | 1890 | 6/4-6/5 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Harry Lyons | lyons-001har | 1890 | 133 g. | Rochester | American Association | Rochester, NY | |
| Pat Lyons | lyons-003pat | 1890 | 4/30-7/7 | Dayton Reds | Tri-State League | Dayton, OH | |
| Pat Lyons | lyons-003pat | 1890 | 7/21-8/5 | 11 g. | Cleveland | National League | Cleveland, OH |
| Toby Lyons | lyons-001tob | 1890 | 4/18-5/2 | 3 g. | Syracuse | American Association | Syracuse, NY |
| Toby Lyons | lyons-001tob | 1890 | Boston Lowells | Independent | Boston, MA | ||
| John Lyston | lyston001joh | 1890 | 5/24 | Worcester Grays | Atlantic Association | Worcester, MA | |
| John Lyston | lyston001joh | 1890 | 6/13-7/9 | Hartford | Atlantic Association | Hartford, CT | |
| John Lyston | lyston001joh | 1890 | 10/8-10/15 | MLB Umpire | American Association | , | |
| Mortimer Lyston | lyston001mor | 1890 | +5/1-5/2+ | Baltimore Marylands | Independent | Baltimore, MD | |
| Mortimer Lyston | lyston001mor | 1890 | +8/7-8/27+ | Winchester | Independent | Winchester, VA | |
| William Lyston | lyston001wil | 1890 | 5/15-7/18 | Erie | New York-Pennsylvania League | Erie, PA | |
| William Lyston | lyston001wil | 1890 | 8/15-9/2 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| William Lyston | lyston001wil | 1890 | 10/8-10/15 | MLB Umpire | American Association | , | |
| Dad Lytle | lytle-001dad | 1890 | 4/30-8/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Dad Lytle | lytle-001dad | 1890 | 8/11 | 1 g. | Chicago | National League | Chicago, IL |
| Dad Lytle | lytle-001dad | 1890 | -8/28 | 15 g. | Pittsburgh | National League | Pittsburgh, PA |
| M'ddaugh | 1890 | +9/22+ | Wellsville | WNYSt | Wellsville, NY | ||
| Mac MacArthur | macart001mac | 1890 | 5/1-7/7 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay City, MI | |
| Harry Mace | mace--002har | 1890 | 4/22 | Washington Senators | Atlantic Association | Washington, DC | |
| Harry Mace | mace--002har | 1890 | 5/10-6/14 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Harry Mace | mace--002har | 1890 | 7/4 | Washington Senators | Atlantic Association | Washington, DC | |
| Harry Mace | mace--002har | 1890 | Hampton | Independent | Hampton, VA | ||
| Harry Mace | mace--002har | 1890 | 7/23-8/5 | Hartford | Atlantic Association | Hartford, CT | |
| Macey | macey-002--- | 1890 | Columbus NE Stars | Amateur | Columbus, OH | ||
| Macey | macey-002--- | 1890 | 10/2 | 1 g. | Philadelphia | American Association | Philadelphia, PA |
| Connie Mack | mack--001con | 1890 | 123 g. | Buffalo | Players League | Buffalo, NY | |
| Reddy Mack | mack--001red | 1890 | 4/19-8/26 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Reddy Mack | mack--001red | 1890 | -9/30 | 26 g. | Baltimore | American Association | Baltimore, MD |
| Billy Mackey | mackey003wil | 1890 | 4/30-7/9 | Springfield | Tri-State League | Springfield, OH | |
| Billy Mackey | mackey003wil | 1890 | +7/31-8/28 | Troy | New York State League | Troy, NY | |
| Gus Mackey | mackey001c-- | 1890 | Ottawa | Independent | Ottawa, KS | ||
| John Mackey | mackey002joh | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | ||
| John Mackey | mackey002joh | 1890 | +8/28-9/3 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | |
| John Mackey | mackey002joh | 1890 | 9/5+ | Sterling/Galesburg/Burlington | Illinois-Iowa League | Burlington, IA | |
| Jimmy Macullar | macull001jim | 1890 | 4/17-8/10 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Jimmy Macullar | macull001jim | 1890 | 8/12-9/29 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| Kid Madden | madden001kid | 1890 | 13 g. | Boston | Players League | Boston, MA | |
| Charles Maddock | maddoc001cha | 1890 | Toronto Canucks | International Association | Toronto, ON | ||
| Frank Madigan | madiga001fra | 1890 | +5/21-9/21+ | Troy | New York State League | Troy, NY | |
| Billy Magee | magee-002bil | 1890 | 3/31-6/6 | Dallas Hams | Texas League | Dallas, TX | |
| Billy Magee | magee-002bil | 1890 | Joplin | Independent | Joplin, MO | ||
| Billy Magee | magee-002bil | 1890 | 7/16-9/27 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| William Magill | magill001w-- | 1890 | Brown Univ. | College | , | ||
| Zeph Magill | 1890 | Troy | New York State League | Troy, NY | |||
| James Maguire | maguir003jam | 1890 | 5/7-5/26 | London Tecumsehs | International Association | London, ON | |
| James Maguire | maguir003jam | 1890 | 6/23-7/5 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay City, MI | |
| James Maguire | maguir003jam | 1890 | 7/11-9/30 | Utica | New York State League | Utica, NY | |
| Tom Maguire | maguir001tho | 1890 | San Francisco Reports | CalAM | San Francisco, CA | ||
| Tom Maguire | maguir001tho | 1890 | Valejo | CalAM | Valejo, CA | ||
| Tom Maguire | maguir001tho | 1890 | Sacramento | NoCal | Sacramento, CA | ||
| Perry Mahaffey | mahaff001per | 1890 | 4/30-5/3 | Akron Akrons | Tri-State League | Akron, OH | |
| Dan Mahoney | mahone003dan | 1890 | 4/29-8/16 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Willard Mains | mains-001wil | 1890 | 4/17-9/14 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Will Mair | mair--001wil | 1890 | -9/? | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| George Mallory | mallor002geo | 1890 | 3/30-4/16 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| George Mallory | mallor002geo | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | ||
| George Mallory | mallor002geo | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | ||
| George Mallory | mallor002geo | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Burlington, IA | ||
| George Mallory | mallor002geo | 1890 | Ishpeming | UppPenin | Ishpeming, MI | ||
| Ockey Malone | malone001ock | 1890 | Springfield | Independent | Springfield, | ||
| William Malone | malone008wil | 1890 | 5/1-7/21 | York Monarchs | Eastern Interstate League | York, PA | |
| Curley Maloney | malone005jam | 1890 | 4/19-7/1 | Washington Senators | Atlantic Association | Washington, DC | |
| Linc Manlove | manlov001abr | 1890 | 5/5-5/7 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Fred Mann | mann--001fre | 1890 | 5/30-6/19 | Hartford | Atlantic Association | Hartford, CT | |
| Al Mannassau | mannas001al- | 1890 | Lansing | Michigan State League | Lansing, MI | ||
| Al Mannassau | mannas001al- | 1890 | 5/3-10/12 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Jim Manning | mannin001jim | 1890 | 4/24-9/29 | Kansas City Blues | Western Association | Kansas City, MO | |
| Tim Manning | mannin001tim | 1890 | 5/1-9/27 | Aurora | Illinois-Iowa League | Aurora, IL | |
| Doc Mansell | 1890 | New York Alaskas | Independent | New York, NY | |||
| Mike Mansell | mansel001mik | 1890 | 4/19-9/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Bert Mapes | 1890 | Port Jervis | Independent | Port Jervis, NY | |||
| Frank March | march-001fra | 1890 | 5/8-10/12 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Frank March | march-001fra | 1890s | Umpire | CA-PacNW | , | ||
| Ray Markle | markle002ray | 1890 | 7/25-7/26 | McKeesport | Tri-State League | McKeesport, PA | |
| Fred Marno | 1890 | Ogdensburg | Independent | Ogdensburg, NY | |||
| Lefty Marr | marr--001lef | 1890 | 130 g. | Cincinnati | National League | Cincinnati, OH | |
| Mars (Mays?) | mars--000--- | 1890 | +5/27+ | Oneonta | New York State League | Oneonta, NY | |
| Ed Mars | mars--001ed- | 1890 | 5/3-8/9 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Ed Mars | mars--001ed- | 1890 | 8/12-10/12 | 16 g. | Syracuse | American Association | Syracuse, NY |
| M. Marsh | 1890 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |||
| Tom Marsh | marsh-000tom | 1890 | 5/30-6/4 | Portland | Pacific Northwest League | Portland, OR | |
| Martin | martin032--- | 1890 | Port Huron | Michigan State League | Port Huron, MI | ||
| Martin | martin127--- | 1890 | +6/2-6/3+ | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Martin | martin127--- | 1890 | +6/25-8/13 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Martin | martin129--- | 1890 | 8/15-8/16+ | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Martin | martin074--- | 1890 | 7/17-7/18 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Martin | martin041--- | 1890 | 7/18 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Martin | 1890 | 5/12-5/17 | Umpire | Int | , | ||
| G.H. Martin | martin002g-- | 1890 | 5/-6/14+ | Elkhart | Indiana State League | Elkhart, IN | |
| G.H. Martin | martin002g-- | 1890 | Muncie | Indiana State League | Muncie, IN | ||
| George Martin | martin001geo | 1890 | 5/2-6/1 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| George Martin | martin001geo | 1890 | 7/29-8/11 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| James Martin | martin023jam | 1890 | 6/7-7/19 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Frank Maskrey | maskre000fra | 1890 | 5/15-5/21 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Leech Maskrey | maskre001lee | 1890 | Preston England | British National Baseball League | Preston, UK | ||
| Charlie Mason | mason-004cha | 1890 | 5/1-7/2 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Bobby Mathews | mathew001bob | 1890 | 71 g. | MLB Umpire | Players League | , | |
| Matthews | matthe034--- | 1890 | 8/7 | McKeesport | Tri-State League | McKeesport, PA | |
| William Matthews | matthe005wil | 1890 | 6/12-6/19 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| William Matthews | matthe005wil | 1890 | 6/28-7/1 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Mike Mattimore | mattim001mik | 1890 | 33 g. | Brooklyn | American Association | Brooklyn, NY | |
| Hal Mauck | mauck-001hal | 1890 | 5/1- | Peru | Indiana State League | Peru, IN | |
| Hal Mauck | mauck-001hal | 1890 | -7/5 | Marion/Logansport | Indiana State League | Marion, IN | |
| Hal Mauck | mauck-001hal | 1890 | 7/20-7/23 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Al Maul | maul--001alb | 1890 | 46 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| Frank Maupins | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| George Maurer | maurer003geo | 1890 | 3/30-6/1 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| George Maurer | maurer003geo | 1890 | 6/30-7/9 | Springfield | Tri-State League | Springfield, OH | |
| Patrick May | may---001pat | 1890 | +5/23-5/24+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Patrick May | may---001pat | 1890 | 56 g. | Oneonta | New York State League | Oneonta, NY | |
| Mayer | 1890 | 17 g. | Meadville | New York-Pennsylvania League | Meadville, PA | ||
| Ed Mayer | mayer-001ed- | 1890 | 4/19- | 120 g. | Philadelphia | National League | Philadelphia, PA |
| Mayhem | mayhem000--- | 1890 | Cobleskill | New York State League | Cobleskill, NY | ||
| Al Mays | mays--001al- | 1890 | 5/2 | 1 g. | Columbus | American Association | Columbus, OH |
| Al Mays | mays--001al- | 1890 | 5/28-7/1 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Jimmy McAleer | mcalee001jam | 1890 | 86 g. | Cleveland | Players League | Cleveland, OH | |
| McBride | mcbrid002joh | 1890 | 10/12 | 1 g. | Philadelphia | American Association | Philadelphia, PA |
| Algie McBride | mcbrid001alg | 1890 | , | ||||
| Samuel McBride | mcbrid000sam | 1890 | Bradford | New York-Pennsylvania League | Bradford, PA | ||
| D. McCabe | 1890 | +9/27+ | Pullman YMCA | Independent | Pullman, IL | ||
| John McCabe | mccabe001joh | 1890 | 5/3-8/20 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Sparrow McCaffrey | mccaff001spa | 1890 | 5/1-7/2 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Sparrow McCaffrey | mccaff001spa | 1890 | 7/31-9/30 | Lebanon | Atlantic Association | Lebanon, PA | |
| Jack McCann | mccann002j-- | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | ||
| McCarthy | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | |||
| Jack McCarthy | mccart003joh | 1890 | Springfield | Independent | Springfield, MA | ||
| Jack McCarthy | mccart004jac | 1890 | San Francisco Haverlys | California League | San Francisco, CA | ||
| Jack McCarthy | mccart004jac | 1890 | San Francisco Allens | CalAmat | San Francisco, CA | ||
| Patrick McCarthy | 1890s | , | |||||
| Paul McCarthy | mccart001pau | 1890 | 5/3-6/16 | Portland | Pacific Northwest League | Portland, OR | |
| Tommy McCarthy | mccart001tom | 1890 | 133 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Allen McCarthy/Carty | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | |||
| Allen McCarty | mccart000all | 1890 | 5/1 | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Ed McCarty | mccart001ed- | 1890 | 6/12 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| John McCarty | mccart014joh | 1890 | 5/2-7/7 | Detroit Wolverines | International Association | Detroit, MI | |
| John McCarty | mccart014joh | 1890 | 7/27-8/3 | San Francisco Haverlys | California League | San Francisco, CA | |
| Patrick McCarty | mccart004pat | 1890 | Kokomo | Indiana State League | Kokomo, IN | ||
| McCauley | mccaul011--- | 1890 | -6/25 | Elkhart | Indiana State League | Elkhart, IN | |
| Al McCauley | mccaul001al- | 1890 | 116 g. | Philadelphia | National League | Philadelphia, PA | |
| William McCaull | 1890 | 5/1-7/21 | Dubuque | Illinois-Iowa League | Dubuque, IA | ||
| Bill McClellan | mcclel001bil | 1890 | 4/20-9/29 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| James McCloskey | mcclos005jam | 1890 | 4/29 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| James C.? McCloskey | mcclos014--- | 1890 | +5/22-9/11 | Cobleskill | New York State League | Cobleskill, NY | |
| John McCloskey | mcclos001joh | 1890 | 3/30-6/7 | Houston Mud Cats | Texas League | Houston, TX | |
| John McCloskey | mcclos001joh | 1890 | 6/23-8/17 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| John McCloskey | mcclos001joh | 1890 | Fort Worth | Independent | Fort Worth, TX | ||
| Broderick McClung | 1890 | Knoxville | Independent | Knoxville, TN | |||
| Matthew McClung | 1890-93 | Lehigh University | College | , | |||
| Pleasant McClung | mcclun001ple | 1890 | Knoxville | Independent | Knoxville, TN | ||
| McConnell | mcconn021--- | 1890 | +5/15+ | Muncie | Indiana State League | Muncie, IN | |
| James McCormack | mccorm006jam | 1890 | 4/30 | Mansfield | Tri-State League | Mansfield, OH | |
| McCormick | mccorm019--- | 1890 | 6/5 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| McCormick | mccorm036--- | 1890 | +8/31+ | Chicago Garden Citys | Chicago City League | Chicago, IL | |
| H. McCormick | mccorm000h-- | 1890 | 5/27-5/30 | Spokane | Pacific Northwest League | Spokane, WA | |
| H. McCormick | mccorm000h-- | 1890 | 6/21-9/7 | Seattle | Pacific Northwest League | Seattle, WA | |
| Harry McCormick | mccorm007har | 1890 | 5/-6/ | Peru | Indiana State League | Peru, IN | |
| J.E. McCormick | mccorm004--- | 1890 | 5/4-5/13 | Portland | Pacific Northwest League | Portland, OR | |
| J.E. McCormick | mccorm019--- | 1890 | 6/5 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| J.E. McCormick | mccorm004--- | 1890 | 5/4-5/13 | Portland | Pacific Northwest League | Portland, OR | |
| Jerry McCormick | mccorm001jer | 1890 | 5/1-7/21 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Jerry McCormick | mccorm001jer | 1890 | 7/22-9/30 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Jim McCormick | mccorm002jim | 1890 | Lewiston | Independent | Lewiston, ME | ||
| Pete McCoy | mccoy-001pet | 1890 | 4/19-5/17 | Washington Senators | Atlantic Association | Washington, DC | |
| Pete McCoy | mccoy-001pet | 1890 | 6/15 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Charlie McCullough | mccull002cha | 1890 | 4/23-8/29 | 26 g. | Brooklyn | American Association | Brooklyn, NY |
| Charlie McCullough | mccull002cha | 1890 | 3 g. | Syracuse | American Association | Syracuse, NY | |
| Charlie McCullough | mccull002cha | 1890 | +9/12-9/29 | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Tommy McCullum | mccull001tho | 1890 | 6/3-6/14 | McKeesport | Tri-State League | McKeesport, PA | |
| Perry McCully | mccull000per | 1890 | Erie | New York-Pennsylvania League | Erie, PA | ||
| Michael McDermott | mcderm003mic | 1890 | 4/21-7/19 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Michael McDermott | mcderm003mic | 1890 | 7/28-9/11 | Cobleskill | New York State League | Cobleskill, NY | |
| Sandy McDermott | mcderm001san | 1890 | 4/19- | 62 g. | MLB Umpire | National League | , |
| Sandy McDermott | mcderm001san | 1890 | 8/19-9/28 | Umpire | WestA | , | |
| Tom McDermott | mcderm005tho | 1890 | 4/19-9/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| McDonald | mcdona090--- | 1890 | +7/10-7/12+ | Bradford | New York-Pennsylvania League | Bradford, PA | |
| McDonald | mcdona091--- | 1890 | 5/12-6/2+ | Utica | New York State League | Utica, NY | |
| McDonald | mcdona089--- | 1890 | +8/31+ | Chicago Garden Citys | Chicago City League | Chicago, IL | |
| Jim McDonald | mcdona003jim | 1890 | 3/23-11/23 | Oakland Colonels | California League | Oakland, CA | |
| Alex McFarlan | mcfarl002ale | 1890 | 3/30-5/23 | Dallas Hams | Texas League | Dallas, TX | |
| Alex McFarlan | mcfarl002ale | 1890 | 6/2 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Horace McFarlan | mcfarl001hor | 1890 | Somerville | Somerville, NJ | |||
| Herm McFarland | mcfarl001her | 1890 | 7/31-8/7 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Herm McFarland | mcfarl001her | 1890 | 8/12-8/14 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| Jack McFetridge | mcfetr001joh | 1890 | U. of Pennsylvania | College | , | ||
| Jack McFetridge | mcfetr001joh | 1890 | +4/5+ | Manayunk Highland | Independent | Manayunk, | |
| Jack McFetridge | mcfetr001joh | 1890 | 6/7 | 1 g. | Philadelphia | National League | Philadelphia, PA |
| Jack McFetridge | mcfetr001joh | 1890 | +7/4+ | Philadelphia Riverton | Independent | Philadelphia, PA | |
| McFitters | mcfitt000--- | 1890 | +5/23+ | Kokomo | Indiana State League | Kokomo, IN | |
| McGann | 1890 | Winchester | Independent | Winchester, VA | |||
| Ambrose McGann | mcgann001amb | 1890 | Marylands | Independent | , | ||
| Andrew McGann | mcgann001and | 1890 | Marylands | Independent | , | ||
| Chippy McGarr | mcgarr001chi | 1890 | 121 g. | Boston | National League | Boston, MA | |
| Jack McGeachey | mcgeac001jac | 1890 | 104 g. | Brooklyn | Players League | Brooklyn, NY | |
| J. McGibney | mcgibn000j-- | 1890 | Albany | New York State League | Albany, NY | ||
| Willie McGill | mcgill005wil | 1890 | 5/8- | 24 g. | Cleveland | Players League | Cleveland, OH |
| Billy McGinley | mcginl001--- | 1890 | Sheboygan | Independent | Sheboygan, WI | ||
| Dennis McGinley | mcginl001den | 1890 | 5/2-6/11 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Richard McGinley | mcginl001ric | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| Richard McGinley | mcginl001ric | 1890 | Peru | Indiana State League | Peru, IN | ||
| Frank McGinn | mcginn001fra | 1890 | 6/9 | 1 g. | Pittsburgh | National League | Pittsburgh, PA |
| Gus McGinnis | mcginn001gus | 1890 | Muncie | Indiana State League | Muncie, IN | ||
| Jumbo McGinnis | mcginn001jum | 1890 | 4/29-5/26 | Umpire | CIntSt | , | |
| Jumbo McGinnis | mcginn001jum | 1890 | 6/1-6/5 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Jumbo McGinnis | mcginn001jum | 1890 | 8/16 | Umpire | CIntSt | , | |
| Pat McGivney | mcgivn000pat | 1890 | Resolutes | Independent | , | ||
| Pat McGivney | mcgivn000pat | 1890 | Albany | New York State League | Albany, NY | ||
| John McGlone | mcglon001joh | 1890 | 4/22-9/27 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| McGrath | mcgrat015--- | 1890 | +8/31+ | Chicago Brands | Chicago City League | Chicago, IL | |
| John McGraw | mcgraw003joh | 1890 | 5/18 - | 6 g. | Olean | New York-Pennsylvania League | Olean, NY |
| John McGraw | mcgraw003joh | 1890 | 24 g. | Wellsville | WNY | Wellsville, NY | |
| John McGraw | mcgraw003joh | 1890 | Hornellsville | WNY | Hornellsville, NY | ||
| John McGraw | mcgraw003joh | 1890 | Canisteo | WNY | Canisteo, NY | ||
| Patrick McGreevy | mcgree001pat | 1890 | Middletown | Independent | Middletown, NY | ||
| Joe McGuckin | mcguck001joe | 1890 | 4/19-7/19 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Joe McGuckin | mcguck001joe | 1890 | 7/26-8/26 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Joe McGuckin | mcguck001joe | 1890 | 8/27-9/8 | 11 g. | Baltimore | American Association | Baltimore, MD |
| Deacon McGuire | mcguir006jam | 1890 | 87 g. | Rochester | American Association | Rochester, NY | |
| Thomas McGuirk | mcguir004tho | 1890 | 3/30-6/7 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| Thomas McGuirk | mcguir004tho | 1890 | 6/21-10/12 | Spokane | Pacific Northwest League | Spokane, WA | |
| Bill McGunnigle | mcgunn001bil | 1890 | Brooklyn | National League | Brooklyn, NY | ||
| Bob McHale | mchale001bob | 1890 | 3/28-11/23 | Sacramento Senators | California League | Sacramento, CA | |
| G.H. McHale | mchale001g-- | 1890 | West Superior | Amat | West Superior, WI | ||
| John McHale | mchale002joh | 1890 | +5/23-9/23+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Joseph McIntosh | mcinto003jos | 1890 | 5/1-5/15 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Ed McKean | mckean001edw | 1890 | 136 g. | Cleveland | National League | Cleveland, OH | |
| John McKee | mckee-005joh | 1890 | 4/19-9/30 | New Haven | Atlantic Association | New Haven, CT | |
| McKeever | mckeev003--- | 1890 | 6/17-6/28+ | Meadville | New York-Pennsylvania League | Meadville, PA | |
| McKenna | mckenn003--- | 1890 | 6/3-6/7 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| James McKenna | mckenn006jam | 1890 | 5/1-5/ | Peru | Indiana State League | Peru, IN | |
| Dave McKeough | mckeou001dav | 1890 | 4/22- | 62 g. | Rochester | American Association | Rochester, NY |
| Byron McKibben | mckibb001byr | 1890 | Hastings | semi-pro | Hastings, NE | ||
| Theodore McKim | mckim-001the | 1890 | Umpire | WestA | , | ||
| Barney McLaughlin | mclaug001bar | 1890 | -8/12 | 86 g. | Syracuse | American Association | Syracuse, NY |
| Barney McLaughlin | mclaug001bar | 1890 | 8/27-9/9 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Frank McLaughlin | mclaug001fra | 1890 | 4/19-5/1 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Frank McLaughlin | mclaug001fra | 1890 | 6/17-6/24 | Albany | New York State League | Albany, NY | |
| Michael McLaughlin | mclaug004mic | 1890 | NJ | , | |||
| Michael McLaughlin | 1890 | 4/17-4/29 | Umpire | WestA | , | ||
| Michael McLaughlin | 1890 | 5/2-7/5 | Umpire | Int | , | ||
| Tom McLaughlin | mclaug001tom | 1890 | 5/1-7/5 | Toronto Canucks | International Association | Toronto, ON | |
| Tom McLaughlin | mclaug001tom | 1890 | 7/19-9/29 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Jack McMahon | mcmaho001jac | 1890 | -6/10 | Manistee | Michigan State League | Manistee, MI | |
| Jack McMahon | mcmaho001jac | 1890 | 6/25-7/5 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Jack McMahon | mcmaho001jac | 1890 | Calumet | UppPenin | Calumet, MI | ||
| Jack McMahon | mcmaho001jac | 1890 | 9/17 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Jack McMahon | mcmaho006joh | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| Jack McMahon | mcmaho006joh | 1890 | 6/12-7/5 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Sadie McMahon | mcmaho003joh | 1890 | 49 g. | Philadelphia | American Association | Philadelphia, PA | |
| Sadie McMahon | mcmaho003joh | 1890 | 12 g. | Baltimore | American Association | Baltimore, MD | |
| Thomas McMahon | mcmaho001tho | 1890 | Manistee | Michigan State League | Manistee, MI | ||
| Thomas McMahon | mcmaho001tho | 1890 | Lansing | Michigan State League | Lansing, MI | ||
| Barney McManus | mcmanu001bar | 1890s | Weedsport Watsons | Independent | Weedsport, | ||
| McMichael | mcmich002--- | 1890 | 6/7-6/20 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| George McMillan | mcmill001geo | 1890 | 4/30-8/2 | Mansfield | Tri-State League | Mansfield, OH | |
| George McMillan | mcmill001geo | 1890 | 8/11-8/22 | 10 g. | New York | National League | New York, NY |
| Peter McNabb | mcnabb001edg | 1890 | 5/4-9/29 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| E.T. McNeeley | mcneel001e-- | 1890 | President | CIntSt | , | ||
| E.T. McNeeley | mcneel003--- | 1890 | 8/3 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Bid McPhee | mcphee001bid | 1890 | 132 g. | Cincinnati | National League | Cincinnati, OH | |
| Mart McQuaid | mcquai001mor | 1890 | 5/1-8/14 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Mart McQuaid | mcquai001mor | 1890 | 8/16-9/30 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Mox McQuery | mcquer001mox | 1890 | 122 g. | Syracuse | American Association | Syracuse, NY | |
| Pete McShannic | mcshan001pet | 1890 | 5/1-5/31 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay, MI | |
| Trick McSorley | mcsorl001tri | 1890 | 4/29-6/6 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Trick McSorley | mcsorl001tri | 1890 | 7 g. | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Trick McSorley | mcsorl001tri | 1890 | Umpire | CIntSt | , | ||
| Trick McSorley | mcsorl001tri | 1890 | Umpire | Il-Ia | , | ||
| Jim McTamany | mctama001jim | 1890 | 125 g. | Columbus | American Association | Columbus, OH | |
| Carl McVey | mcvey-001car | 1890 | 3/30-6/1 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Carl McVey | mcvey-001car | 1890 | 6/11-8/2 | Mansfield | Tri-State League | Mansfield, OH | |
| Carl McVey | mcvey-001car | 1890 | 8/11-8/21+ | Oneonta | New York State League | Oneonta, NY | |
| George McVey | mcvey-001geo | 1890 | 5/6-8/6 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| George McVey | mcvey-001geo | 1890 | 9/14-9/28 | Portland | Pacific Northwest League | Portland, OR | |
| Mattie McVicker | mcvick001mat | 1890 | Fort Dodge | Independent | Fort Dodge, KS | ||
| Mattie McVicker | mcvick001mat | 1890 | 5/3-9/23 | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| George Meakim | meakim001geo | 1890 | 5/2- | 29 g. | Louisville | American Association | Louisville, KY |
| James Meakim | meakim001jam | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| Jack Meara | meara-001jac | 1890 | +6/16-9/3 | Oneonta | New York State League | Oneonta, NY | |
| Jack Meara | meara-001jac | 1890 | +9/25-9/28+ | Utica | New York State League | Utica, NY | |
| Pete Meegan | meegan001pet | 1890 | 3/23-7/20 | Oakland Colonels | California League | Oakland, CA | |
| Pete Meegan | meegan001pet | 1890 | 3/25-5/21 | Umpire | Calif | , | |
| Frank Meek | meek--001dad | 1890 | -4/24 | 4 g. | St. Louis Browns | American Association | St. Louis, MO |
| Frank Meek | meek--001dad | 1890 | 6/3-6/27 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Jouett Meekin | meekin002jou | 1890 | 4/18-9/29 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Mehrie | mehrie002--- | 1890 | +8/31+ | Chicago Whitings | Chicago City League | Chicago, IL | |
| Frank Meinke | meinke001fra | 1890 | +8/31+ | Chicago Brands | Chicago City League | Chicago, IL | |
| Albert Meisler | meisle000alb | 1890 | Kokomo | Indiana State League | Kokomo, IN | ||
| George Meister | meiste001geo | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| George Meister | meiste001geo | 1890 | 6/12-7/5 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| John Meister | meiste002joh | 1890 | 4/19-7/28 | Worcester Grays | Atlantic Association | Worcester, MA | |
| John Meister | meiste002joh | 1890 | 8/11-9/30 | Lebanon | Atlantic Association | Lebanon, PA | |
| John Menefee | menefe001joh | 1890 | 5/15-9/9 | Erie | New York-Pennsylvania League | Erie, PA | |
| Tom Menefee | menefe001tho | 1890 | 5/8-6/1 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Tom Menefee | menefe001tho | 1890 | 7/4-8/4+ | Erie | New York-Pennsylvania League | Erie, PA | |
| Frank Mercer | mercer001fra | 1890 | 4/3-4/15 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Frank Mercer | mercer001fra | 1890 | Newark | Independent | Newark, OH | ||
| Claude Meredyth | meredy001cla | 1890 | Eminence | Eminence, | |||
| Will Mernan | mernan000wil | 1890 | 4/15 | Bluffton | Indiana State League | Bluffton, IN | |
| Bert Merrifield | merrif001ber | 1890 | 8/5-9/27 | Ottawa | Illinois-Iowa League | Ottawa, IL | |
| Jack Messitt | messit001jac | 1890 | 4/17-9/29 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Frank Metz | 1890 | no g. | Akron Akrons | Tri-State League | Akron, OH | ||
| George Meyers | meyers001hen | 1890 | Manayunk Highland | Independent | Manayunk, | ||
| George Meyers | meyers001hen | 1890 | 8/30-10/4 | 5 g. | Philadelphia | American Association | Philadelphia, PA |
| George Meyers | meyers002geo | 1890 | Lansing | Michigan State League | Lansing, MI | ||
| Matthew Micklejohn | mickle001mat | 1890 | 5/1-5/22 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Jake Milbee | milbee001jos | 1890 | 4/30-7/24 | McKeesport | Tri-State League | McKeesport, PA | |
| Jake Milbee | milbee001jos | 1890 | 7/26-9/10 | Erie | New York-Pennsylvania League | Erie, PA | |
| Millan | millan001--- | 1890 | 6/22 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Frank Millard | millar001fra | 1890 | 5/4 | 1 g. | St. Louis Browns | American Association | St. Louis, MO |
| Frank Millard | millar001fra | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| Frank Millard | millar001fra | 1890 | +6/10-6/12+ | Aurora | Illinois-Iowa League | Aurora, IL | |
| Miller | miller172--- | 1890 | -9/ | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Miller | miller130--- | 1890 | 6/21-7/7 | Detroit Wolverines | International Association | Detroit, MI | |
| Bob Miller | miller001bob | 1890 | 4/20-8/25 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Bob Miller | miller001bob | 1890 | 8/30- | 15 g. | Rochester | American Association | Rochester, NY |
| Dusty Miller | miller004cha | 1890 | 4/29-8/15 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Dusty Miller | miller004cha | 1890 | 26 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Frank Miller | miller009fra | 1890 | Cuban Giants | Independent | Cuban, | ||
| Frederick Miller | miller006fre | 1890 | 4/30-7/24 | McKeesport | Tri-State League | McKeesport, PA | |
| Frederick Miller | miller006fre | 1890 | +8/5-9/10 | Erie | New York-Pennsylvania League | Erie, PA | |
| George Miller | miller005geo | 1890 | 138 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Harry Miller | 1890 | Webb City | Independent | Webb City, MO | |||
| Harry Miller | miller010har | 1890 | +7/-9/24+ | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Henry Miller | miller006hen | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| Joe Miller | miller005joe | 1890 | 4/17-9/30 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Joseph Miller | miller011jos | 1890 | Lincoln Giants | Independent | Lincoln, NE | ||
| Tommy Miller | miller002tom | 1890 | 5/2-6/21 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Tommy Miller | miller002tom | 1890 | +8/8-9/30 | Utica | New York State League | Utica, NY | |
| William Miller | miller032wil | 1890 | 5/1-7/1+ | Marion/Logansport | Indiana State League | Marion, IN | |
| William Miller | miller032wil | 1890 | Marion/Logansport | Indiana State League | Marion, IN | ||
| John Milligan | millig001joc | 1890 | 62 g. | Philadelphia | Players League | Philadelphia, PA | |
| Millin | millin001--- | 1890 | 5/12 | McKeesport | Tri-State League | McKeesport, PA | |
| Mills | mills-030--- | 1890 | 5/14-7/8 | Springfield | Tri-State League | Springfield, OH | |
| Mills | mills-033--- | 1890 | 7/10-7/30 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Lynn Mills | mills-001lyn | 1890 | 5/3-10/12 | Spokane | Pacific Northwest League | Spokane, WA | |
| Sam Mills | mills-001sam | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| George Milton | 1890 | Peoria Canaries | Central Interstate League | Peoria, IL | |||
| Billy Minehan/Mina | 1890 | Troy | New York State League | Troy, NY | |||
| Dan Minnehan | minneh001dan | 1890 | 4/17-9/30 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Mishler | mishle001--- | 1890 | 5/1-5/24 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Mitchell | mitche005--- | 1890 | 5/14-5/22 | Seattle | Pacific Northwest League | Seattle, WA | |
| John Mitchell | mitche019joh | 1890 | 4/18-9/29 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Martin Mitchell | mitche003mar | 1890 | Pittsburgh Tarentum | Independent | Pittsburgh, PA | ||
| Tommy Mohan | mohan-001tom | 1890 | Muskegon | Michigan State League | Muskegon, MI | ||
| Kid Mohler | mohler001kid | 1890 | Kearney | Independent | Kearney, NE | ||
| Kid Mohler | mohler001kid | 1890 | 8/18-9/16 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| Kid Monroe | monroe001dan | 1890 | 5/2-7/23 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Kid Monroe | monroe001dan | 1890 | 8/20-9/1+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Timothy Montague | montag001tim | 1890 | 5/28-8/12 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Hiram Montel | montel001hir | 1890 | Olean | New York-Pennsylvania League | Olean, NY | ||
| George Moolic | moolic001geo | 1890 | 4/21-4/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Harry Mooney | mooney001har | 1890 | +6/19-6/20+ | Bradford | New York-Pennsylvania League | Bradford, PA | |
| William Mooney | mooney002wil | 1890 | 4/30-8/2 | Mansfield | Tri-State League | Mansfield, OH | |
| William Mooney | mooney002wil | 1890 | +8/20-8/26+ | Oneonta | New York State League | Oneonta, NY | |
| William Mooney | mooney002wil | 1890 | +9/8-9/21+ | Troy | New York State League | Troy, NY | |
| Moore | moore-099--- | 1890 | 9/14 | Stockton | California League | Stockton, CA | |
| Moore | moore-109--- | 1890 | 6/8 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Moore | moore-002--- | 1890 | 6/23-6/25 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Alfred Moore | moore-001alf | 1890 | 4/19-8/13 | Hartford | Atlantic Association | Hartford, CT | |
| D. Moore | moore-004d-- | 1890 | 6/12-6/13 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Dutch Moore | moore-000dut | 1890 | Peru | Indiana State League | Peru, IN | ||
| Dutch Moore | moore-003c-- | 1890 | +6/16-7/12+ | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| John Moore | moore-020joh | 1890 | +6/16-9/4 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| John Moore | moore-020joh | 1890 | +9/9-9/15 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Walter Moore | moore-003wal | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| Walter Moore | moore-003wal | 1890 | 6/19-7/8 | Dayton Reds | Tri-State League | Dayton, OH | |
| Walter Moore | moore-003wal | 1890 | 7/21-9/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Moran | 1890 | +9/22+ | Wellsville | WNYSt | Wellsville, NY | ||
| Augie Moran | moran-002aug | 1890 | 5/1-7/7 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Bill Moran | moran-001bil | 1890 | 4/17-9/29 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Gene Moriarty | moriar001gen | 1890 | 5/1-9/ | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| John Morrill | morril003joh | 1890 | 2 g. | Boston | Players League | Boston, MA | |
| Ed Morris | morris002ed- | 1890 | 18 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| James Morris | morris022jam | 1890 | 5/1- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Hank Morrison | morris001han | 1890 | 5/20-6/5 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Jon Morrison | morris002jon | 1890 | 5/16-5/17 | Port Huron | Michigan State League | Port Huron, MI | |
| Mike Morrison | morris001mik | 1890 | -9/21 | 34 g. | Syracuse | American Association | Syracuse, NY |
| Mike Morrison | morris001mik | 1890 | 4 g. | Baltimore | American Association | Baltimore, MD | |
| Tom Morrissey | morris003tom | 1890 | 4/17-9/29 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| S.J. Mortland | mortla001s-- | 1890 | 7/4 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Charlie Morton | morton002cha | 1890 | 4/17-10/13 | g. | Toledo | American Association | Toledo, OH |
| Harry Morton | morton003har | 1890 | 5/7-6/16 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Harry Morton | morton003har | 1890 | Meadville | New York-Pennsylvania League | Meadville, PA | ||
| Sam Morton | morton001sam | 1890 | 4/17 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Frank Motz | motz--001fra | 1890 | 4/30-8/3 | Akron Akrons | Tri-State League | Akron, OH | |
| Frank Motz | motz--001fra | 1890 | Seattle | Pacific Northwest League | Seattle, WA | ||
| Frank Motz | motz--001fra | 1890 | 8/27 | 1 g. | Philadelphia | National League | Philadelphia, PA |
| William Motz | motz--002wil | 1890 | St. Louis | Independent | St. Louis, MO | ||
| Theo Moyer | moyer-001the | 1890 | 5/15-6/28+ | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Mucker | mucker001--- | 1890 | 5/16 | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Muldoon | muldoo003--- | 1890 | 8/22 | Lebanon | Atlantic Association | Lebanon, PA | |
| Ed Mulhearn | mulhea001edw | 1890 | 5/1-6/30 | Bluffton | Indiana State League | Bluffton, IN | |
| Ed Mulhearn | mulhea001edw | 1890 | 7/1- | Muncie | Indiana State League | Muncie, IN | |
| Ed Mulhearn | mulhea001edw | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| Dan Mulholland | mulhol002--- | 1890 | 7/1-7/12+ | Meadville | New York-Pennsylvania League | Meadville, PA | |
| E.J. Mullally | mullal001e-- | 1890 | 5/3-6/15 | Spokane | Pacific Northwest League | Spokane, WA | |
| Tony Mullane | mullan001ton | 1890 | 81 g. | Cincinnati | National League | Cincinnati, OH | |
| Jim Mullee | mullee001jam | 1890 | 5/3-5/10 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Mullin | 1890 | 7/1-7/21 | Umpire | EIntSt | , | ||
| Joe Mulvey | mulvey001joe | 1890 | 120 g. | Philadelphia | Players League | Philadelphia, PA | |
| J.G. Munday | munday001j-- | 1890 | 5/3-9/1 | Portland | Pacific Northwest League | Portland, OR | |
| Bert Munger | munger001ber | 1890 | 4/30-6/29 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Bert Munger | munger001ber | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| Hall Munger | munger001hal | 1890 | 4/29-5/27 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| John Munyan | munyan001joh | 1890 | -10/4 | 2 g. | Columbus | American Association | Columbus, OH |
| John Munyan | munyan001joh | 1890 | 96 g. | St. Louis Browns | American Association | St. Louis, MO | |
| James Murdock | murdoc002jam | 1890 | 5/15-6/28+ | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Murphy | murphy130--- | 1890 | -5/ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Murphy | murphy045--- | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | ||
| Murphy | murphy045--- | 1890 | 9/5-9/8+ | Sterling/Galesburg/Burlington | Illinois-Iowa League | Burlington, IA | |
| Bob Murphy | murphy001bob | 1890 | 5/27- | 3 g. | New York | National League | New York, NY |
| Bob Murphy | murphy001bob | 1890 | - 8/25 | 16 g. | Brooklyn | American Association | Brooklyn, NY |
| Bob Murphy | murphy001bob | 1890 | 8/26-9/30 | Albany | New York State League | Albany, NY | |
| Con Murphy | murphy001con | 1890 | - 9/6 | 23 g. | Brooklyn | Players League | Brooklyn, NY |
| Connie Murphy | murphy002con | 1890 | 5/2-6/14 | London Tecumsehs | International Association | London, ON | |
| Connie Murphy | murphy002con | 1890 | 6/26-8/17 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Danny Murphy | murphy013dan | 1890 | 4/19-5/9 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Danny Murphy | murphy013dan | 1890 | 5/22-7/19 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Danny Murphy | murphy013dan | 1890 | 7/22-9/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Jack Murphy | murphy004jac | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| Joe Murphy | murphy003joe | 1890 | Chicago Whitings | Chicago City League | Chicago, IL | ||
| John Murphy | murphy028joh | 1890-91 | St. Paul | St. Paul, MN | |||
| John Murphy | murphy025joh | 1890 | Manistee | Michigan State League | Manistee, MI | ||
| John Murphy | murphy025joh | 1890 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | ||
| John Murphy | murphy035joh | 1890 | 6/10-7/7+ | Albany | New York State League | Albany, NY | |
| Larry Murphy | murphy001lar | 1890 | 4/17-9/29 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Morgan Murphy | murphy001mor | 1890 | 4/22- | 68 g. | Boston | Players League | Boston, MA |
| Pat Murphy | murphy007pat | 1890 | 32 g. | New York | National League | New York, NY | |
| Tony Murphy | murphy001ton | 1890 | New York Alaskas | Independent | New York, NY | ||
| William Murphy | murphy015wil | 1890 | 5/1- | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Yale Murphy | murphy001yal | 1890-92 | Yale Univ. | College | , | ||
| Murray | murray008--- | 1890 | 4/30-5/7 | Springfield | Tri-State League | Springfield, OH | |
| Murray | murray052--- | 1890 | 5/3- | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Murray | murry-002--- | 1890 | 6/25-7/8 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Billy Murray | murray007wil | 1890 | 4/29-8/17 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Miah Murray | murray001mia | 1890 | 4/19-5/17 | Hartford | Atlantic Association | Hartford, CT | |
| Miah Murray | murray001mia | 1890 | 7/1-7/5 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Miah Murray | murray001mia | 1890 | 8/16-8/26 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Thomas Murray | 1890 | Ogdensburg | Independent | Ogdensburg, NY | |||
| Thomas Murray | murray009tho | 1890 | 5/1- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Tom Murray | murray008tho | 1890 | 3/31-6/6 | Dallas Hams | Texas League | Dallas, TX | |
| Tom Murray | murray008tho | 1890 | Joplin | Independent | Joplin, MO | ||
| Mussey | mussey000--- | 1890 | 5/15-6/17 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Mussey | mussey000--- | 1890 | Springfield | Independent | Springfield, OH | ||
| Jim Mutrie | mutrie001jam | 1890 | New York | National League | New York, NY | ||
| Myers | myers-025--- | 1890 | 4/30-7/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Myers | myers-040--- | 1890 | 7/14-7/15 | Canton Nadjys | Tri-State League | Canton, OH | |
| Myers | myers-049--- | 1890 | 7/28-8/7 | McKeesport | Tri-State League | McKeesport, PA | |
| Myers | myers-031--- | 1890 | 6/7-6/10 | London Tecumsehs | International Association | London, ON | |
| Myers | myers-072--- | 1890 | +6/14+ | Elkhart | Indiana State League | Elkhart, IN | |
| Al Myers | myers-001al- | 1890 | 117 g. | Philadelphia | National League | Philadelphia, PA | |
| Billy Myers | myers-003bil | 1890 | -7/24 | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Billy Myers | myers-002bil | 1890 | Des Moines Stars | Amateur | Des Moines, IA | ||
| Billy Myers | myers-002bil | 1890 | 7/31-8/10 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Billy Myers | myers-002bil | 1890 | 8/12-8/13 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| George Myers | myers-002geo | 1890 | 4/17-7/12 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Henry Myers | myers-004hen | 1890 | 5/5-5/17 | Easton | Eastern Interstate League | Easton, PA | |
| Henry Myers | myers-004hen | 1890 | MLB Umpire | National League | , | ||
| Tom Nagle | nagle-001tom | 1890 | 4/22- | 38 g. | Chicago | National League | Chicago, IL |
| Billy Nash | nash--001bil | 1890 | 132 g. | Boston | Players League | Boston, MA | |
| Peter Nash | nash--001pet | 1890 | +6/2-6/16+ | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Joe Neale | neale-001joe | 1890 | 4/29-8/16 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Joe Neale | neale-001joe | 1890 | 11 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Candy Nelson | nelson001can | 1890 | 5/17-6/1 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Candy Nelson | nelson001can | 1890 | - 8/25 | 60 g. | Brooklyn | American Association | Brooklyn, NY |
| Candy Nelson | nelson001can | 1890 | +8/31-9/30 | Albany | New York State League | Albany, NY | |
| John Nelson | nelson008joh | 1890 | +5/3+ | Cuban Giants | Independent | Cuban, | |
| George Nettleton | nettle001g-- | 1890 | , | ||||
| Mont Neves | neves-001mon | 1890 | +5/28+ | Scottdale | Independent | Scottdale, PA | |
| Mont Neves | neves-001mon | 1890 | +8/20+ | Pittsburgh Acmes | Independent | Pittsburgh, PA | |
| New | new---003--- | 1890 | +6/3+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Eddie Newell | newell000edd | 1890 | +5/29-7/12+ | Erie | New York-Pennsylvania League | Erie, PA | |
| John Newell | newell002joh | 1890 | 4/21-8/16 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Newman | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| Charlie Newman | newman003cha | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| Charlie Newman | newman003cha | 1890 | 6/12-7/5 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Fred Newman | newman002fre | 1890 | 6/3-6/5 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Jack Newman | newman002jac | 1890 | 5/9-7/4 | Toronto Canucks | International Association | Toronto, ON | |
| Jack Newman | newman002jac | 1890 | 7/20-9/29 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Nichol | nichol006--- | 1890 | 5/16 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Nichol | nichol007--- | 1890 | 7/19 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Frank Nicholas | nichol002fra | 1890 | 4/19-7/9 | Washington Senators | Atlantic Association | Washington, DC | |
| Frank Nicholas | nichol002fra | 1890 | 7/21-7/31 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Sam Nicholl | nichol002sam | 1890 | -5/4 | 14 g. | Columbus | American Association | Columbus, OH |
| Sam Nicholl | nichol002sam | 1890 | 5/23-5/28 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Sam Nicholl | nichol002sam | 1890 | 6/12-7/5 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay, MI | |
| Sam Nicholl | nichol002sam | 1890 | +8/2-9/15 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Kid Nichols | nichol006cha | 1890 | 4/23- | 49 g. | Boston | National League | Boston, MA |
| Nicholson | nichol061--- | 1890 | +8/31+ | Chicago Brands | Chicago City League | Chicago, IL | |
| Billy Nicholson | nichol040--- | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| Parson Nicholson | nichol001par | 1890 | 134 g. | Toledo | American Association | Toledo, OH | |
| George Nicol | nicol-001geo | 1890 | Mt. Sterling | Independent | Mt. Sterling, IL | ||
| George Nicol | nicol-001geo | 1890 | 9/23-10/6 | 3 g. | St. Louis Browns | American Association | St. Louis, MO |
| Hugh Nicol | nicol-001hug | 1890 | 50 g. | Cincinnati | National League | Cincinnati, OH | |
| Hugh Nicol | nicol-001hug | 1890 | 8/17-9/29 | Kansas City Blues | Western Association | Kansas City, MO | |
| Bill Niles | niles-001bil | 1890 | 4/30-7/8 | Dayton Reds | Tri-State League | Dayton, OH | |
| Bill Niles | niles-001bil | 1890 | 7/12-7/25 | McKeesport | Tri-State League | McKeesport, PA | |
| Bill Niles | niles-001bil | 1890 | +8/2-9/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| William Noll | noll--001wil | 1890 | Chicago | ChicCity | Chicago, IL | ||
| William Noll | noll--001wil | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| Lee Norton | 1890 | 8/3 | MLB Umpire | American Association | , | ||
| George Nulton | nulton001geo | 1890 | 4/4- | 40 g. | Austin Senators | Texas League | Austin, TX |
| George Nulton | nulton001geo | 1890 | 6/13-8/17 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Fred Nyce | nyce--001fre | 1890 | 3/31-5/2 | Dallas Hams | Texas League | Dallas, TX | |
| Fred Nyce | nyce--001fre | 1890 | Port Jervis | Independent | Port Jervis, NY | ||
| O'Brien | 1890 | NY-Pa | , | ||||
| O'Brien | obrien128--- | 1890 | 8/8 | Albany | New York State League | Albany, NY | |
| Billy O'Brien | obrien001bil | 1890 | -7/24 | 96 g. | Brooklyn | American Association | Brooklyn, NY |
| Billy O'Brien | obrien001bil | 1890 | 8/25-9/29 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Cinders O'Brien | obrien001cin | 1890 | 26 g. | Cleveland | Players League | Cleveland, OH | |
| Darby O'Brien | obrien002dar | 1890 | 85 g. | Brooklyn | National League | Brooklyn, NY | |
| Frank O'Brien | obrien006fra | 1890 | 4/30 | Umpire | TriSt | , | |
| Frank O'Brien | obrien006fra | 1890 | 5/2-5/23 | MLB Umpire | American Association | , | |
| Frank O'Brien | obrien006fra | 1890 | 6/4-7/14 | Umpire | TriSt | , | |
| George O'Brien | obrien005geo | 1890 | 4/30-8/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| George O'Brien | obrien005geo | 1890 | Dubuque | Dubuque, IA | |||
| Jack O'Brien | obrien002jac | 1890 | -9/16 | 109 g. | Philadelphia | American Association | Philadelphia, PA |
| James O'Brien | obrien010jam | 1890 | 5/3-5/12 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| James O'Brien | obrien010jam | 1890 | 6/12-7/5 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| James O'Brien | obrien010jam | 1890 | 7/9-7/19 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| James O'Brien | obrien010jam | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| James O'Brien | obrien010jam | 1890 | 8/16-9/3+ | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Jeremiah O'Brien | obrien002jer | 1890 | 4/30-7/9 | Springfield | Tri-State League | Springfield, OH | |
| Jeremiah O'Brien | obrien002jer | 1890 | 7/14-8/3 | Akron Akrons | Tri-State League | Akron, OH | |
| Jerry O'Brien | obrien001jer | 1890 | 4/16-6/29 | Washington Senators | Atlantic Association | Washington, DC | |
| Jerry O'Brien | obrien001jer | 1890 | 7/18-7/28 | Hartford | Atlantic Association | Hartford, CT | |
| Jerry O'Brien | obrien001jer | 1890 | 8/5-8/27 | Lebanon | Atlantic Association | Lebanon, PA | |
| Joe O'Brien | obrien002joe | 1890 | 5/1-7/23 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Pete O'Brien | obrien003pet | 1890 | 4/29-6/16 | 27 g. | Chicago | National League | Chicago, IL |
| Pete O'Brien | obrien003pet | 1890 | 7/1-9/29 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Thomas O'Brien | obrien012tho | 1890 | 7/21-8/5 | Hartford | Atlantic Association | Hartford, CT | |
| Tom O'Brien | obrien001tom | 1890 | -7/28 | 73 g. | Rochester | American Association | Rochester, NY |
| Tom O'Brien | obrien001tom | 1890 | 8/28-9/15 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| I.J. O'Connell | oconne001i-- | 1890 | 4/19-5/17 | Hartford | Atlantic Association | Hartford, CT | |
| I.J. O'Connell | oconne001i-- | 1890 | Meriden Resolutes | Independent | Meriden, CT | ||
| I.J. O'Connell | oconne001i-- | 1890 | Norwich | Independent | Norwich, CT | ||
| Thomas O'Connell | oconne002tho | 1890 | 5/31-8/13 | Hartford | Atlantic Association | Hartford, CT | |
| O'Connor | oconno046--- | 1890 | +8/31+ | Chicago Garden Citys | Chicago City League | Chicago, IL | |
| Dan O'Connor | oconno001dan | 1890 | 4/29-5/25 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Dan O'Connor | oconno001dan | 1890 | 6/3-7/19 | 6 g. | Louisville | American Association | Louisville, KY |
| Dan O'Connor | oconno001dan | 1890 | 8/24-9/29 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Dennis O'Connor | oconno002den | 1890 | 8/13-10/12 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Jack O'Connor | oconno006joh | 1890 | 121 g. | Columbus | American Association | Columbus, OH | |
| Jack O'Connor | oconno002jac | 1890 | 6/30-7/9 | Springfield | Tri-State League | Springfield, OH | |
| Jack O'Connor | oconno002jac | 1890 | 7/22-8/3 | Canton Nadjys | Tri-State League | Canton, OH | |
| Maurice O'Connor | oconno001mau | 1890 | 5/1- | Peru | Indiana State League | Peru, IN | |
| Mike O'Connor | oconno003mik | 1890 | 3/30-5/2 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Mike O'Connor | oconno003mik | 1890 | 5/30-6/7 | Houston Mud Cats | Texas League | Houston, TX | |
| Mike O'Connor | oconno003mik | 1890 | Evansville | Independent | Evansville, IL | ||
| Mike O'Connor | oconno003mik | 1890 | Omaha NB | Independent | Omaha, NE | ||
| T. J. O'Connor | 1890 | Detroit Wolverines | International Association | Detroit, MI | |||
| Hank O'Day | oday--001han | 1890 | 43 g. | New York | Players League | New York, NY | |
| Harry O'Day | oday--001har | 1890 | 4/17-7/10 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Harry O'Day | oday--001har | 1890 | 7/19-9/4 | Portland | Pacific Northwest League | Portland, OR | |
| Lawrence O'Dea | 1890 | 4/17-6/23 | MLB Umpire | American Association | , | ||
| O'Donnell | odonne019--- | 1890 | +6/18+ | Anderson | Indiana State League | Anderson, IN | |
| Jere O'Donnell | odonne000jer | 1890 | 6/9 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Tom O'Donnell | odonne001tom | 1890 | 4/10-6/1 | Austin Senators | Texas League | Austin, TX | |
| John O'Hara | ohara-003joh | 1890 | 5/9-5/24 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| John O'Hara | ohara-003joh | 1890 | 6/12-6/25 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| John O'Hara | ohara-003joh | 1890 | 7/18-7/30 | Albany | New York State League | Albany, NY | |
| John O'Leary | oleary004joh | 1890 | 4/29-6/1 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| John O'Leary | oleary004joh | 1890 | 6/3-7/8 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Eddie O'Meara | omeara005--- | 1890 | +8/31+ | Chicago Rivals | Chicago City League | Chicago, IL | |
| O'Neil | oneil-015--- | 1890 | 7/12 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Ed O'Neil | oneil-001ed- | 1890 | 4/3-6/6 | Dallas Hams | Texas League | Dallas, TX | |
| Ed O'Neil | oneil-001ed- | 1890 | 6/20-7/5 | 2 g. | Toledo | American Association | Toledo, OH |
| Ed O'Neil | oneil-002jam | 1890 | 7/9-8/12 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Ed O'Neil | oneil-002jam | 1890 | 8/15-9/4 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Ed O'Neil | oneil-001ed- | 1890 | 9/19-10/12 | 10 g. | Philadelphia | American Association | Philadelphia, PA |
| James O'Neil | oneil-001ed- | 1890 | 7/15-9/4 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| James O'Neil | oneil-002jam | 1890 | 8/25-8/27 | Troy | New York State League | Troy, NY | |
| William O'Neil | oneil-003wil | 1890 | 5/28 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| William O'Neil | oneil-003wil | 1890 | 6/10 | Buffalo Bisons/Montreal | International Association | Montreal, QC | |
| William O'Neil | oneil-003wil | 1890 | 6/16-6/20 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| William O'Neil | oneil-003wil | 1890 | 6/25-7/7 | Detroit Wolverines | International Association | Detroit, MI | |
| Fred O'Neill | oneill001fre | 1890 | Port Huron | Michigan State League | Port Huron, MI | ||
| Fred O'Neill | oneill001fre | 1890 | 6/25-7/5 | Detroit Wolverines | International Association | Detroit, MI | |
| Tip O'Neill | oneill001tip | 1890 | 137 g. | Chicago | Players League | Chicago, IL | |
| Tip O'Neill | oneill001nor | 1890 | 3/23-11/16 | Oakland Colonels | California League | Oakland, CA | |
| O'Reilly | oreill002--- | 1890 | 5/1-7/5 | Easton | Eastern Interstate League | Easton, PA | |
| O'Rourke | orourk031--- | 1890 | +8/31+ | Chicago West Ends | Chicago City League | Chicago, IL | |
| Frank O'Rourke | orourk001fra | 1890 | 4/28-8/4 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Frank O'Rourke | orourk001fra | 1890 | 9 g. | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Frank O'Rourke | orourk001fra | 1890 | Richmond | Independent | Richmond, VA | ||
| Jim O'Rourke | orourk003jam | 1890 | 111 g. | New York | Players League | New York, NY | |
| Joseph O'Rourke | orourk004jos | 1890 | Richmond | Independent | Richmond, VA | ||
| Joseph O'Rourke | orourk004jos | 1890 | +8/18-9/3+ | Olean | New York-Pennsylvania League | Olean, NY | |
| Mike O'Rourke | orourk001mik | 1890 | 5/17-8/26 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Mike O'Rourke | orourk001mik | 1890 | 8/30-10/15 | 9 g. | Baltimore | American Association | Baltimore, MD |
| Mike O'Rourke | orourk002mik | 1890 | 5/6-8/3 | Akron Akrons | Tri-State League | Akron, OH | |
| Tim O'Rourke | orourk003tim | 1890 | 3/30-6/4 | Houston Mud Cats | Texas League | Houston, TX | |
| Tim O'Rourke | orourk003tim | 1890 | 6/14- | 87 g. | Syracuse | American Association | Syracuse, NY |
| Tom O'Rourke | orourk001tom | 1890 | -8/1 | 2 g. | New York | National League | New York, NY |
| Tom O'Rourke | orourk001tom | 1890 | 41 g. | Syracuse | American Association | Syracuse, NY | |
| Oakley | oakley007--- | 1890 | 5/13-9/11 | Cobleskill | New York State League | Cobleskill, NY | |
| Doc Oberlander | oberla001doc | 1890 | 4/21-5/14 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Doc Oberlander | oberla001doc | 1890 | +5/23-5/28+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Kid Ogden | ogden-001lou | 1890 | +5/17-6/24+ | Bluffton | Indiana State League | Bluffton, IN | |
| Kid Ogden | ogden-001lou | 1890 | 6/- | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Dave Oldfield | oldfie001dav | 1890 | 5/2-6/2 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| Dave Oldfield | oldfie001dav | 1890 | 6/7-6/10 | Buffalo Bisons/Montreal | International Association | Montreal, QC | |
| J. A. Ollison | 1890 | Cobleskill | New York State League | Cobleskill, NY | |||
| J.R. Olwell | olwell001j-- | 1890 | 5/1-5/31 | Easton | Eastern Interstate League | Easton, PA | |
| Fred Orelup | orelup001fre | 1890 | 5/1-9/23 | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Dave Orr | orr---002dav | 1890 | 107 g. | Brooklyn | Players League | Brooklyn, NY | |
| Fred Osborne | osborn003fre | 1890 | 4/30-7/12 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Fred Osborne | osborn003fre | 1890 | 7/14-9/1 | 41 g. | Pittsburgh | National League | Pittsburgh, PA |
| Fred Osborne | osborn003fre | 1890 | San Jose | Independent | San Jose, CA | ||
| Billy Otterson | otters001bil | 1890 | 5/19-7/23 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Owens | owens-027--- | 1890 | 5/1-5/24 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Ed Pabst | pabst-001ed- | 1890 | 5/24-6/6 | Dallas Hams | Texas League | Dallas, TX | |
| Ed Pabst | pabst-001ed- | 1890 | +7/21-7/22+ | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Ed Pabst | pabst-001ed- | 1890 | +8/26-9/4 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Ed Pabst | pabst-001ed- | 1890 | 9/26-10/14 | 8 g. | Philadelphia | American Association | Philadelphia, PA |
| Ed Pabst | pabst-001ed- | 1890 | 4 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Russell Pache | pache-001rus | 1890 | 8/31-11/23 | Stockton | California League | Stockton, CA | |
| Joe Page | 1890 | President | Provincial | , | |||
| C. Paine | 1890 | TX | , | ||||
| Charles Palmer | palmer004cha | 1890 | 4/10-4/12 | Umpire | Tx | , | |
| Joseph Panker | 1890 | Greenpoints | Independent | Greenpoints, NY | |||
| Parker | 1890 | Chicago Unions | Independent | Chicago, IL | |||
| Harry Parker | parker004har | 1890 | 4/30-8/9 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Billy Parks | parks-002bil | 1890 | 5/2-6/14 | London Tecumsehs | International Association | London, ON | |
| Billy Parks | parks-002bil | 1890 | 6/23-7/5 | Springfield | Tri-State League | Springfield, OH | |
| Billy Parks | parks-002bil | 1890 | +8/24-9/11 | Troy | New York State League | Troy, NY | |
| Billy Parks | parks-002bil | 1890 | Cobleskill | New York State League | Cobleskill, NY | ||
| Fred Parrott | parrot001fre | 1890 | 4/25-10/31 | Stockton | California League | Stockton, CA | |
| Jiggs Parrott | parrot001jig | 1890 | 5/3-10/12 | Portland | Pacific Northwest League | Portland, OR | |
| Tom Parrott | parrot002tho | 1890 | 5/3-10/12 | Portland | Pacific Northwest League | Portland, OR | |
| Parson | parson003--- | 1890 | 7/12 | Akron Akrons | Tri-State League | Akron, OH | |
| Charlie Parsons | parson002cha | 1890 | -4/23 | 2 g. | Cleveland | National League | Cleveland, OH |
| Charlie Parsons | parson002cha | 1890 | Umpire | NY-Pa | , | ||
| Bones Parvin | parvin001fra | 1890 | Weir City | Weir City, KS | |||
| Bones Parvin | parvin001fra | 1890 | St. Joseph | St. Joseph, MO | |||
| William Patchen | patche001wil | 1890 | 5/15-8/9 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| William Patchen | patche001wil | 1890 | 8/19-9/5 | Olean | New York-Pennsylvania League | Olean, NY | |
| Frank Paterson | paters000fra | 1890 | Peru | Indiana State League | Peru, IN | ||
| Thomas Patten | patten000tho | 1890 | 6/3-6/14 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Patterson | patter055--- | 1890 | 5/16-5/22 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Patterson | 1890 | +6/27-8/ | Hoosic Falls | Alb&Ren | Hoosic Falls, NY | ||
| George Patterson | patter004geo | 1890 | +6/7-7/4+ | Erie | New York-Pennsylvania League | Erie, PA | |
| John Patterson | patter007joh | 1890 | Lincoln Giants | Independent | Lincoln, NE | ||
| Owen Patton | patton001owe | 1890 | 4/17-8/10 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Louis Paul | 1890s | Weedsport Watsons | Independent | Weedsport, | |||
| H. T. Payne | 1890 | no g. | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | ||
| Harley Payne | payne-005har | 1890 | 4/30-8/9 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Harley Payne | payne-005har | 1890 | 8/20-9/15 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Frank Pears | pears-002fra | 1890 | 4/18-9/17 | Kansas City Blues | Western Association | Kansas City, MO | |
| Peartree | 1890 | Lansingburg | Alb&Ren | Lansingburg, | |||
| Ollie Pecord | pecord001oll | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| Chick Pedroes | pedro-001cha | 1890 | 5/1 - | Aurora | Illinois-Iowa League | Aurora, IL | |
| William Peeples | peeple001wil | 1890 | 3/30-6/7 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| William Peeples | peeple001wil | 1890 | 6/21-10/12 | Spokane | Pacific Northwest League | Spokane, WA | |
| Heinie Peitz | peitz-001hen | 1890 | Hillsboro | Independent | Hillsboro, IL | ||
| John Peltz | peltz-001joh | 1890 | -10/13 | 98 g. | Brooklyn | American Association | Brooklyn, NY |
| John Peltz | peltz-001joh | 1890 | 5 g. | Syracuse | American Association | Syracuse, NY | |
| John Peltz | peltz-001joh | 1890 | 20 g. | Toledo | American Association | Toledo, OH | |
| Bob Pender | pender001rob | 1890 | 3/31-6/7 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| Bob Pender | pender001rob | 1890 | Joplin | Independent | Joplin, MO | ||
| Bob Pender | pender001rob | 1890 | 7/5-10/12 | Seattle | Pacific Northwest League | Seattle, WA | |
| John Pendergrass | pender002joh | 1890 | +6/20-7/18+ | Utica | New York State League | Utica, NY | |
| Jimmy Peoples | people001jim | 1890 | 4/30-5/18 | Umpire | TriSt | , | |
| Jimmy Peoples | people001jim | 1890 | 5/21-6/3 | Canton Nadjys | Tri-State League | Canton, OH | |
| Jimmy Peoples | people001jim | 1890 | -9/1 | 43 g. | MLB Umpire | American Association | , |
| Harrison Peppers | pepper001har | 1890 | Webb City | Independent | Webb City, MO | ||
| Bob Perham | perham002w-- | 1890 | Willsburg-Altamont | Amat | , | ||
| Perkins | perkin020--- | 1890 | +8/31+ | Chicago Whitings | Chicago City League | Chicago, IL | |
| Frank Perkins | 1890 | Ogdensburg | Independent | Ogdensburg, NY | |||
| Tate Perkins | perkin013--- | 1890 | +7/1-8/25+ | Fort Scott | Independent | Fort Scott, KS | |
| Hip Perrier | perrie001hyp | 1890 | 5/22-6/16 | Portland | Pacific Northwest League | Portland, OR | |
| Hip Perrier | perrie001hyp | 1890 | 7/4-7/20 | San Francisco Haverlys | California League | San Francisco, CA | |
| John Peters | peters009joh | 1890 | 7/15-7/17 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| William Peters | 1890 | Chicago Unions | Independent | Chicago, IL | |||
| Peterson | peters072--- | 1890 | +8/31+ | Chicago West Ends | Chicago City League | Chicago, IL | |
| William Peterson | 1890 | Dover | Dover, NH | ||||
| John Petrie | petrie001joh | 1890 | +7/7-9/28+ | Utica | New York State League | Utica, NY | |
| Pat Pettee | pettee001pat | 1890 | 5/2-6/2 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| Pat Pettee | pettee001pat | 1890 | 6/4-6/11 | Buffalo Bisons/Montreal | International Association | Montreal, QC | |
| Pat Pettee | pettee001pat | 1890 | 6/14-6/16 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Pat Pettee | pettee001pat | 1890 | 7/5-9/30 | New Haven | Atlantic Association | New Haven, CT | |
| Jack Pettiford | pettif002jac | 1890 | 4/4-6/6 | Waco Babies | Texas League | Waco, TX | |
| Jack Pettiford | pettif002jac | 1890 | 6/12-7/8 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Bob Pettit | pettit001bob | 1890 | 4/19-5/22 | New Haven | Atlantic Association | New Haven, CT | |
| Bob Pettit | pettit001bob | 1890 | 5/31-9/29 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Charlie Petty | petty-002cha | 1890 | 5/1-6/19 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Charlie Petty | petty-002cha | 1890 | 6/23-7/4 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| Charlie Petty | petty-002cha | 1890 | 7/15-8/27 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Bill Pfann | pfann-001bil | 1890 | 5/3-5/10 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Fred Pfeffer | pfeffe001fre | 1890 | 124 g. | Chicago | Players League | Chicago, IL | |
| Phelan | phelan015--- | 1890 | +8/31+ | Chicago Franklins | Chicago City League | Chicago, IL | |
| Dan Phelan | phelan001dan | 1890 | 4/18-5/11 | 8 g. | Louisville | American Association | Louisville, KY |
| Dan Phelan | phelan001dan | 1890 | 5/25-6/22 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Dick Phelan | phelan001dic | 1890 | 4/17-8/10 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Dick Phelan | phelan001dic | 1890 | 8/12-9/29 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| Phillips | philli002--- | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Bill Phillips | philli005wil | 1890 | 4/19-8/2 | Washington Senators | Atlantic Association | Washington, DC | |
| Bill Phillips | philli005wil | 1890 | 8/11 - | 14 g. | Pittsburgh | National League | Pittsburgh, PA |
| Ira Phillips | philli001ira | 1890 | 4/17-7/2 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Ira Phillips | philli001ira | 1890 | 7/14-10/12 | Spokane | Pacific Northwest League | Spokane, WA | |
| Marr Phillips | philli003mar | 1890 | -7/25 | 64 g. | Rochester | American Association | Rochester, NY |
| John Pickett | picket001joh | 1890 | 100 g. | Philadelphia | Players League | Philadelphia, PA | |
| Gracie Pierce | pierce001gra | 1890 | 57 g. | MLB Umpire | Players League | , | |
| John Pierson | pierso002joh | 1890 | Lansing | Michigan State League | Lansing, MI | ||
| Charles Pike | pike--002cha | 1890 | 4/30-7/5 | Akron Akrons | Tri-State League | Akron, OH | |
| George Pinkney | pinkne001geo | 1890 | 126 g. | Brooklyn | National League | Brooklyn, NY | |
| Piper | piper-001--- | 1890 | 8/1 | McKeesport | Tri-State League | McKeesport, PA | |
| Herman Pitz | pitz--001her | 1890 | 4/18-10/12 | 61 g. | Brooklyn | American Association | Brooklyn, NY |
| Herman Pitz | pitz--001her | 1890 | 29 g. | Syracuse | American Association | Syracuse, NY | |
| Walter Plock | plock-001wal | 1890 | 4/30-5/24 | Mansfield | Tri-State League | Mansfield, OH | |
| Walter Plock | plock-001wal | 1890 | 5/26-8/9 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Walter Plock | plock-001wal | 1890 | +8/24-9/1+ | Cobleskill | New York State League | Cobleskill, NY | |
| James Plumb | 1890 | 5/1-9/27 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | ||
| James Plummer | plumme001jam | 1890 | 4/30-6/14 | McKeesport | Tri-State League | McKeesport, PA | |
| Mark Polhemus | polhem001mar | 1890 | 3/30-6/7 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| Mark Polhemus | polhem001mar | 1890 | 6/21-10/9 | Spokane | Pacific Northwest League | Spokane, WA | |
| Lee Pond | pond--001lee | 1890 | +5/24+ | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Lee Pond | pond--001lee | 1890 | +8/31+ | Chicago Brands | Chicago City League | Chicago, IL | |
| Tom Poorman | poorma001tom | 1890 | 4/17-9/29 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Ezra Pope | pope--000ezr | 1890 | Amherst College | College | , | ||
| Ezra Pope | pope--000ezr | 1890 | 5/3-8/9 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Fred Popkay | popkay001fre | 1890 | 4/29-8/17 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Fred Popkay | popkay001fre | 1890 | 9/5+ | Sterling/Galesburg/Burlington | Illinois-Iowa League | Burlington, IA | |
| Andy Porter | porter003and | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| Henry Porter | porter001hen | 1890 | 6/13-7/4 | London Tecumsehs | International Association | London, ON | |
| Louis Porter | porter001lou | 1890 | 4/30-8/9 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| P. Possehl | posseh001--- | 1890 | +8/31+ | Chicago Rivals | Chicago City League | Chicago, IL | |
| P. J. Pounell | 1890 | Hartford | Hartford, CT | ||||
| Abner Powell | powell001abn | 1890 | 5/1-6/21 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Abner Powell | powell001abn | 1890 | 6/23-7/5 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| Abner Powell | powell001abn | 1890 | 7/25-10/5 | Spokane | Pacific Northwest League | Spokane, WA | |
| Jim Powell | powell002jim | 1890 | 4/18-9/29 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Charles Power | power-001cha | 1890 | 4/30-6/1 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Charles Power | power-001cha | 1890 | 6/5 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Tom Power | power-001tom | 1890 | 4/19-8/26 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Tom Power | power-001tom | 1890 | 8/27-10/15 | 38 g. | Baltimore | American Association | Baltimore, MD |
| Powers | powers027--- | 1890 | Staten Island | Independent | Staten Island, NY | ||
| Powers | powers027--- | 1890 | 7/22-8/13+ | Troy | New York State League | Troy, NY | |
| H. Powers | powers002h-- | 1890 | Albany | New York State League | Albany, NY | ||
| J.C. Powers | powers000jc- | 1890 | 5/1-6/25 | Elkhart | Indiana State League | Elkhart, IN | |
| J.C. Powers | powers000jc- | 1890 | Peru | Indiana State League | Peru, IN | ||
| Jim Powers | powers002jim | 1890 | 4/18-5/11 | 4 g. | Brooklyn | American Association | Brooklyn, NY |
| Pat Powers | powers001pat | 1890 | 4/17- | 133 g. | Rochester | American Association | Rochester, NY |
| Phil Powers | powers001phi | 1890 | 122 g. | MLB Umpire | National League | , | |
| Prescott | presco002--- | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| William Prescott | presco001wil | 1890 | 4/29-6/27 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| William Prescott | presco001wil | 1890 | Danville | Danville, | |||
| Preston | presto001--- | 1890 | Lansing | Michigan State League | Lansing, MI | ||
| Price | price-042--- | 1890 | 8/15-8/28 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Bill Price | price-001bil | 1890 | 4/27 | 1 g. | Philadelphia | American Association | Philadelphia, PA |
| Bill Price | price-001bil | 1890 | 7/19 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Bill Price | price-001bil | 1890 | 8/4-8/22 | Lebanon | Atlantic Association | Lebanon, PA | |
| William Primrose | primro000wil | 1890 | New York Metroplitans | Independent | New York, NY | ||
| William Primrose | primro000wil | 1890 | 7/4-9/30 | Albany | New York State League | Albany, NY | |
| George Pritchard | 1890 | Aberdeen Nonpareil | Independent | Aberdeen, SD | |||
| George Proeser | proese001geo | 1890 | 3/30-6/7 | Houston Mud Cats | Texas League | Houston, TX | |
| George Proeser | proese001geo | 1890 | -7/10 | 13 g. | Syracuse | American Association | Syracuse, NY |
| Provins | provin001--- | 1890 | 4/30-8/7 | McKeesport | Tri-State League | McKeesport, PA | |
| Pugh | pugh--004--- | 1890 | Muncie | Indiana State League | Muncie, IN | ||
| Blondie Purcell | purcel001blo | 1890 | 110 g. | Philadelphia | American Association | Philadelphia, PA | |
| James Purvis | purvis002jam | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| James Purvis | purvis002jam | 1890 | 6/12-6/13 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| James Purvis | purvis002jam | 1890 | 6/27-7/3 | McKeesport | Tri-State League | McKeesport, PA | |
| James Purvis | purvis002jam | 1890 | Marquette | WiSt | Marquette, MI | ||
| Harry Pyle | pyle--001sha | 1890 | 5/8 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Quiesser | quiess001--- | 1890 | 5/1-6/3 | Springfield | Tri-State League | Springfield, OH | |
| J. Quigley | quigle009--- | 1890 | +8/31+ | Chicago Brands | Chicago City League | Chicago, IL | |
| Quinn | quinn-043--- | 1890 | 6/22-6/27 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Daniel Quinn | quinn-002dan | 1890 | 5/2-5/31 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| Daniel Quinn | quinn-002dan | 1890 | 6/4-6/11 | Buffalo Bisons/Montreal | International Association | Montreal, QC | |
| Daniel Quinn | quinn-002dan | 1890 | 6/14-6/27 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Daniel Quinn | quinn-002dan | 1890 | 7/1-7/7 | Detroit Wolverines | International Association | Detroit, MI | |
| Daniel Quinn | quinn-002dan | 1890 | 8/- | Norwich | Independent | Norwich, CT | |
| Jimmy Quinn | quinn-001jim | 1890 | 5/12-5/30 | Albany | New York State League | Albany, NY | |
| Joe Quinn | quinn-003jos | 1890 | 133 g. | Boston | Players League | Boston, MA | |
| Tom Quinn | quinn-001tom | 1890 | 58 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| Marshall Quinton | quinto001mar | 1890 | 5/13-7/24+ | Cobleskill | New York State League | Cobleskill, NY | |
| Maurice Quirk | quirk-001mau | 1890 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | ||
| Maurice Quirk | quirk-001mau | 1890 | +6/24+ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| M. Quitsow | quitzo002--- | 1890 | 4/20-9/28 | Chicago Brands | Chicago City League | Chicago, IL | |
| Old Hoss Radbourn | radbou001old | 1890 | 45 g. | Boston | Players League | Boston, MA | |
| John Rademacher | rodema002joh | 1890 | 3/30-6/1 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| John Rademacher | rodema002joh | 1890 | 6/23-8/3 | Canton Nadjys | Tri-State League | Canton, OH | |
| Paul Radford | radfor002pau | 1890 | 122 g. | Cleveland | Players League | Cleveland, OH | |
| Bill Raffert | raffer001wil | 1890 | +5/21+ | Kokomo | Indiana State League | Kokomo, IN | |
| Jack Rafferty | raffer002--- | 1890 | 5/?- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Jack Rafferty | raffer001joh | 1890 | 22 g. | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Jack Rafferty | raffer001joh | 1890 | 6/- | Peru | Indiana State League | Peru, IN | |
| Jack Rafferty | raffer001joh | 1890 | 5/13+ | 15 g. | Cobleskill | New York State League | Cobleskill, NY |
| John Rainey | rainey001joh | 1890 | - 7/29 | 42 g. | Buffalo | Players League | Buffalo, NY |
| Ramsey | 1890 | +5/15+ | Muncie | Indiana State League | Muncie, IN | ||
| E. Ramsey | ramsey002e-- | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Hank Ramsey | ramsey001hen | 1890 | Va | , | |||
| Joe Ramsey | ramsey001joe | 1890 | 5/21 | Akron Akrons | Tri-State League | Akron, OH | |
| Toad Ramsey | ramsey001toa | 1890 | 44 g. | St. Louis Browns | American Association | St. Louis, MO | |
| William Ramsey | ramsey006wil | 1890 | Peru | Indiana State League | Peru, IN | ||
| Randall | randal004--- | 1890 | 5/2-6/16 | Akron Akrons | Tri-State League | Akron, OH | |
| Dud Randall | randal001dud | 1890 | 4/30-6/8 | Dayton Reds | Tri-State League | Dayton, OH | |
| Dud Randall | randal001dud | 1890 | 6/12-6/23 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Jim Randall | randal004jam | 1890 | 7/7-7/23 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Jim Randall | randal004jam | 1890 | 7/31-9/30 | Lebanon | Atlantic Association | Lebanon, PA | |
| John Rappold | rappol001jos | 1890 | 5/30-8/10 | Seattle | Pacific Northwest League | Seattle, WA | |
| Ed Rastal | rastal001ed- | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| A. Rathborn | 1890 | +9/27+ | Pullman YMCA | Independent | Pullman, IL | ||
| Arthur Rathburn | rathbu001art | 1890 | no g. | Aurora | Illinois-Iowa League | Aurora, IL | |
| Rathwell | rathwe001--- | 1890 | 5/21-5/31 | Easton | Eastern Interstate League | Easton, PA | |
| Irv Ray | ray---001irv | 1890 | 4/19-8/26 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Irv Ray | ray---001irv | 1890 | 8/27- | 38 g. | Baltimore | American Association | Baltimore, MD |
| Harry Raymond | raymon002har | 1890 | 123 g. | Louisville | American Association | Louisville, KY | |
| Al Reach | reach-001al- | 1890 | g. | Philadelphia | National League | Philadelphia, PA | |
| Ted Ready | ready-001ted | 1890 | Kearney | Independent | Kearney, NE | ||
| Ted Ready | ready-001ted | 1890 | 6/7-9/26 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Reardon | reardo011--- | 1890 | +6/3+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| John Reccius | recciu001joh | 1890 | 4/29-6/6 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| John Reccius | 1890 | Louisville Eclipse | Independent | Louisville, KY | |||
| Phil Reccius | recciu002phi | 1890 | 4/29-6/1 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Phil Reccius | recciu002phi | 1890 | 7/5 | 1 g. | Rochester | American Association | Rochester, NY |
| Hugh Reddy | 1890 | 5/?-5/? | Utica | New York State League | Utica, NY | ||
| Redmond | redmon003--- | 1890 | 5/21-5/30 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| George Redmond | redmon001geo | 1890 | 5/1-? | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Icicle Reeder | reeder001ici | 1890 | 4/4-5/31 | Austin Senators | Texas League | Austin, TX | |
| Icicle Reeder | reeder001ici | 1890 | 6/19-7/1 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Nick Reeder | reeder001nic | 1890 | 5/1-6/30 | Bluffton | Indiana State League | Bluffton, IN | |
| Nick Reeder | reeder001nic | 1890 | 7/1- | Muncie | Indiana State League | Muncie, IN | |
| Nick Reeder | reeder001nic | 1890 | Fort Worth | TxWinter | Fort Worth, TX | ||
| John Reeves | reeves003joh | 1890 | 5/2-7/7 | Umpire | CIntSt | , | |
| John Reeves | reeves003joh | 1890 | Umpire | Il-Ia | , | ||
| John Reeves | 1890 | Lincoln Giants | Independent | Lincoln, NE | |||
| P. H. Regan | regan-000ph- | 1890 | +6/13-6/16+ | Albany | New York State League | Albany, NY | |
| A. Rehne | rehne-000a-- | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| Reidy | reidy-002--- | 1890 | +8/31+ | Chicago Franklins | Chicago City League | Chicago, IL | |
| John Reidy | reidy-002joh | 1890 | 4/19-5/17 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| John Reidy | reidy-002joh | 1890 | 5/23-7/7 | London Tecumsehs | International Association | London, ON | |
| John Reidy | reidy-002joh | 1890 | 7/11-8/9 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| John Reidy | reidy-002joh | 1890 | 8/24-10/12 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Reiley | reiley002--- | 1890 | 5/-6/25 | Elkhart | Indiana State League | Elkhart, IN | |
| Reilly | reilly010--- | 1890 | 6/13 | Dayton Reds | Tri-State League | Dayton, OH | |
| Charlie Reilly | reilly003cha | 1890 | 5/20-5/24 | Canton Nadjys | Tri-State League | Canton, OH | |
| Charlie Reilly | reilly003cha | 1890 | 137 g. | Columbus | American Association | Columbus, OH | |
| James Reilly | 1890 | Stam.-Sylvan | Independent | , | |||
| James Reilly | 1890 | Bayonne Rowing & AC | Independent | Bayonne, NJ | |||
| Jim Reilly | reilly001joe | 1890 | Bayonne Rowing & AC | Independent | Bayonne, NJ | ||
| John Reilly | reilly004joh | 1890 | 133 g. | Cincinnati | National League | Cincinnati, OH | |
| Josh Reilly | reilly002wil | 1890 | Santa Rosa | Independent | Santa Rosa, CA | ||
| Josh Reilly | reilly002wil | 1890 | 6/14-7/20 | San Francisco Haverlys | California League | San Francisco, CA | |
| John Reinagle | reinag001joh | 1890 | 4/4-6/6 | Waco Babies | Texas League | Waco, TX | |
| Henry Reitz | reitz-001hen | 1890 | 3/23-11/23 | Sacramento Senators | California League | Sacramento, CA | |
| Henry Reitz | reitz-001hen | 1890 | San Diego | SoCal | San Diego, CA | ||
| Jack Remsen | remsen001jac | 1890 | +5/15-9/8+ | Troy | New York State League | Troy, NY | |
| Louis Renner | renner001lou | 1890 | 5/1-5/2 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| James Renwick | renwic001jam | 1890 | Calumet | UppPenin | Calumet, MI | ||
| James Renwick | renwic001jam | 1890 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | ||
| George Rettger | rettge002geo | 1890 | 6/7-9/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| William Reutenback | 1890 | Hancock | UppPenin | Hancock, MI | |||
| Charlie Reynolds | reynol006cha | 1890 | 5/24-9/29 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Frank Rheims | rheims001fra | 1890 | +8/31+ | Chicago Whitings | Chicago City League | Chicago, IL | |
| Billy Rhines | rhines001wil | 1890 | 4/22 - | 46 g. | Cincinnati | National League | Cincinnati, OH |
| George Rhue | rhue--001geo | 1890 | 5/1-6/13 | Detroit Wolverines | International Association | Detroit, MI | |
| George Rhue | rhue--001geo | 1890 | 6/21-9/2 | Portland | Pacific Northwest League | Portland, OR | |
| George Rhue | rhue--001geo | 1890 | 9/- | Umpire | PacNW | , | |
| Joe Rice | rice--001joe | 1890 | 5/2 | Joliet | Illinois-Iowa League | Joliet, IL | |
| Lacey Rice | rice--001lac | 1890 | Lebanon | Independent | Lebanon, TN | ||
| Lacey Rice | rice--001lac | 1890 | 6/13-6/14 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Arthur Richardson | richar001art | 1890 | 5/1-5/? | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Arthur Richardson | richar001art | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | ||
| Danny Richardson | richar002dan | 1890 | 123 g. | New York | Players League | New York, NY | |
| Hardy Richardson | richar001har | 1890 | 133 g. | Boston | Players League | Boston, MA | |
| Chris Rickley | rickle001chr | 1890 | 5/1-7/5 | Toronto Canucks | International Association | Toronto, ON | |
| John Ricks | ricks-001joh | 1890 | St. Louis Wibbing Indians | Amat | St. Louis, MO | ||
| John Riddle | riddle005joh | 1890 | 4/19-8/4 | Washington Senators | Atlantic Association | Washington, DC | |
| John Riddle | riddle005joh | 1890 | 8/7-8/11 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| John Riddle | riddle005joh | 1890 | -10/11 | 27 g. | Philadelphia | American Association | Philadelphia, PA |
| Ridley | ridley002--- | 1890 | 5/12-8/15+ | Albany | New York State League | Albany, NY | |
| Rieman | reiman001--- | 1890 | 5/30-6/1 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Rieman | rieman005--- | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | ||
| Rieman | rieman005--- | 1890 | 8/1-8/22 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | |
| Joseph Rigby | rigby-001jos | 1890 | 5/1-6/23 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Joseph Rigby | rigby-001jos | 1890 | 7/3 | Umpire | EIntSt | , | |
| Robert Rigby | rigby-001rob | 1890 | 5/19-5/24 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| James Riley | riley-008jam | 1890 | 5/?- | Joliet | Illinois-Iowa League | Joliet, IL | |
| William Riley | riley-009wil | 1890 | 5/22-8/14 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| William Riley | 1890 | Manistee | Michigan State League | Manistee, MI | |||
| Harry Rinehart | rineha001har | 1890 | 5/1-7/5 | Easton | Eastern Interstate League | Easton, PA | |
| Harry Rinehart | rineha001har | 1890 | 7/8-7/23 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Harry Rinehart | rineha001har | 1890 | 8/4-8/7 | McKeesport | Tri-State League | McKeesport, PA | |
| Claude Ritchey | ritche001cla | 1890 | Emlenton | Amat | Emlenton, PA | ||
| Claude Ritchey | ritche001cla | 1890s | Parkers Land | Amat | Parkers Land, PA | ||
| Floyd Ritter | ritter001flo | 1890 | 6/4 | 1 g. | Toledo | American Association | Toledo, OH |
| Jack Roach | 1890 | St. John | NewBruns | St. John, NB | |||
| Jack Roach | 1890 | St. John | NewBruns | St. John, NB | |||
| John Roach | roach-003joh | 1890 | 4/19-8/9 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| John Roach | roach-003joh | 1890 | 8/13-9/29 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| John Roach | roach-005joh | 1890 | 5/27 | Manchester | NE | Manchester, NH | |
| Val Roan | roan--000val | 1890 | Muncie | Indiana State League | Muncie, IN | ||
| Fred Roat | roat--001fre | 1890 | 5/10 - | 57 g. | Pittsburgh | National League | Pittsburgh, PA |
| Roberts | robert046--- | 1890 | 7/31 | Akron Akrons | Tri-State League | Akron, OH | |
| Roberts | robert101--- | 1890 | +8/31+ | Chicago Garden Citys | Chicago City League | Chicago, IL | |
| Carroll Roberts | robert002car | 1890 | 5/3-6/15 | Spokane | Pacific Northwest League | Spokane, WA | |
| Fred Roberts | robert004fre | 1890 | 3/23-11/23 | Sacramento Senators | California League | Sacramento, CA | |
| Robinson | robins068--- | 1890 | 6/3-6/28+ | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Thomas Robinson | 1890 | 3/23-11/23 | Oakland Colonels | California League | Oakland, CA | ||
| Wilbert Robinson | robins001wil | 1890 | 82 g. | Philadelphia | American Association | Philadelphia, PA | |
| Wilbert Robinson | robins001wil | 1890 | 14 g. | Baltimore | American Association | Baltimore, MD | |
| William Robinson | robins001yan | 1890 | 101 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| Roche | roche-016--- | 1890 | 6/20-9/22+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Roche | 1890 | , | |||||
| Daniel Roche | roche-002dan | 1890 | 5/3-5/8 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Daniel Roche | roche-002dan | 1890 | 5/14-6/7 | London Tecumsehs | International Association | London, ON | |
| Billy Rockwell | rockwe001elm | 1890 | 5/3-10/12 | Seattle | Pacific Northwest League | Seattle, WA | |
| William Rodabaugh | rodaba000wil | 1890 | 5/- | Muncie | Indiana State League | Muncie, IN | |
| Rogers | 1890 | no g. | Aurora | Illinois-Iowa League | Aurora, IL | ||
| E. Rogers | rogers004e-- | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| Emmett Rogers | rogers002emm | 1890 | 4/19-9/28 | 35 g. | Toledo | American Association | Toledo, OH |
| George Rogers | rogers002geo | 1890 | 4/30-5/6 | Akron Akrons | Tri-State League | Akron, OH | |
| Jim Rogers | rogers001jim | 1890 | 5/1-7/23 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Jim Rogers | rogers001jim | 1890 | 7/31-8/27 | Lebanon | Atlantic Association | Lebanon, PA | |
| Jim Rogers | rogers001jim | 1890 | 9/4-9/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Pat Rollins | rollin001hen | 1890 | 5/1-6/10 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| George Rooks | rooks-001geo | 1890 | 5/2-6/2 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| George Rooks | rooks-001geo | 1890 | 6/4-6/11 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| George Rooks | rooks-001geo | 1890 | 6/14-7/7 | Detroit Wolverines | International Association | Detroit, MI | |
| George Rooks | rooks-001geo | 1890 | 7/23-8/1 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| George Rooks | rooks-000--- | 1890 | +8/31+ | Chicago Whitings | Chicago City League | Chicago, IL | |
| Rooney | rooney003--- | 1890 | 6/13 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Rose | rose--030--- | 1890 | 5/28 | Albany | New York State League | Albany, NY | |
| James Roseman | rosema001chi | 1890 | 80 g. | St. Louis Browns | American Association | St. Louis, MO | |
| James Roseman | rosema001chi | 1890 | -8/25 | 2 g. | Louisville | American Association | Louisville, KY |
| Rosenthal | rosent002--- | 1890 | no g. | Aurora | Illinois-Iowa League | Aurora, IL | |
| Ross | 1890 | Los Angeles | Independent | Los Angeles, CA | |||
| Bobby Rothermel | rother001bob | 1890 | Lafayette Col. | College | , | ||
| Billy Rourke | rourke001wil | 1890 | 5/10-6/1 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Billy Rourke | rourke001wil | 1890 | 6/8-6/29 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Billy Rourke | rourke001wil | 1890 | -9/? | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| John Roushkolb | roushk001joh | 1890 | 5/10-6/10 | Muskegon | Michigan State League | Muskegon, MI | |
| Elmer Roussey | rousse002elm | 1890 | 4/19-7/19 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Elmer Roussey | rousse002elm | 1890 | 8/6-9/2 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Phil Routcliffe | routcl001phi | 1890 | 4/21 | 1 g. | Pittsburgh | National League | Pittsburgh, PA |
| Phil Routcliffe | routcl001phi | 1890 | 5/2-8/17 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Dave Rowe | rowe--001dav | 1890 | 4/17-9/27 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Jack Rowe | rowe--001jac | 1890 | 4/19-10/4 | 125 g. | Buffalo | Players League | Buffalo, NY |
| Jack Rowe | rowe--002jac | 1890 | 5/15-8/23 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Jim Roxburgh | roxbur001jim | 1890 | 5/16-9/15 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| A.B. Royce | royce-001a-- | 1890 | , | ||||
| William Rudolph | rudolp001wil | 1890 | 7/4-8/7 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Amos Rusie | rusie-001amo | 1890 | 73 g. | New York | National League | New York, NY | |
| James Russell | russel012jam | 1890 | 5/12-8/29+ | Utica | New York State League | Utica, NY | |
| Cyclone Ryan | ryan--001cyc | 1890 | Norwalk | Independent | Norwalk, CT | ||
| Jack Ryan | ryan--004joh | 1890 | 93 g. | Louisville | American Association | Louisville, KY | |
| Jimmy Ryan | ryan--003jam | 1890 | 118 g. | Chicago | Players League | Chicago, IL | |
| Mike Ryan | ryan--001mik | 1890 | 4/30-6/2 | Springfield | Tri-State League | Springfield, OH | |
| Paddy Ryan | ryan--001pad | 1890 | 5/17 | Canton Nadjys | Tri-State League | Canton, OH | |
| Thomas Ryan | 1890 | Hancock | UpperPenin | Hancock, MI | |||
| William Ryan | 1890 | 5/12+ | FIND | NYSt | , | ||
| William Ryan | ryan--011wil | 1890 | Utica | New York State League | Utica, NY | ||
| W. Ryder | ryder-001w-- | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| W. Ryder | ryder-001w-- | 1890 | Port Huron | Michigan State League | Port Huron, MI | ||
| Dummy Ryn | ryn---001joh | 1890 | 4/17-9/30 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Put Rynn | 1890 | RISt | , | ||||
| H.W. Sage | sage--000hw- | 1890 | ?-7/20 | Olean | New York-Pennsylvania League | Olean, NY | |
| Harry Sage | sage--001har | 1890 | 4/17-10/12 | 81 g. | Toledo | American Association | Toledo, OH |
| Ed Sales | sales-001ed- | 1890 | 5/1-6/21 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Ed Sales | sales-001ed- | 1890 | 6/23-7/5 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Ed Sales | sales-001ed- | 1890 | 7/15-10/3 | 51 g. | Pittsburgh | National League | Pittsburgh, PA |
| Ben Sanders | sander002ben | 1890 | 52 g. | Philadelphia | Players League | Philadelphia, PA | |
| George Sanford | sanfor003geo | 1890 | 5/1-9/? | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| J. A. Sanford | 1890 | Flint Flyers | Michigan State League | Flint, MI | |||
| Stuart Sanford | sanfor001stu | 1890 | Hornellsville | Independent | Hornellsville, NY | ||
| Edward Santry | santry001edw | 1890 | +8/31+ | Chicago Franklins | Chicago City League | Chicago, IL | |
| William Sarsfield | sarsfi002--- | 1890 | +9/22+ | Canisteo | WNY | Canisteo, NY | |
| Al Sauter | sauter001al- | 1890 | 6/13-6/14 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Al Sauter | sauter001al- | 1890 | 8/26 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Al Sauter | sauter001al- | 1890 | 9/8-10/11 | 14 g. | Philadelphia | American Association | Philadelphia, PA |
| E. Sauter | sauter000e-- | 1890 | +8/31+ | Chicago Franklins | Chicago City League | Chicago, IL | |
| Sawyer | sawyer001--- | 1890 | 4/30-6/18 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Jimmy Say | say---001jim | 1890 | 5/7-5/28 | Hartford | Atlantic Association | Hartford, CT | |
| Jimmy Say | say---001jim | 1890 | 8/19 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| George Sayer | sayer-001geo | 1890 | +8/31+ | Chicago West Ends | Chicago City League | Chicago, IL | |
| Phil Saylor | saylor001phi | 1890-91 | Ohio Wesleyan | College | , | ||
| John Scallin | scalli001joh | 1890 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | ||
| Mort Scanlan | scanla001mor | 1890 | 4/21-4/23 | 3 g. | New York | National League | New York, NY |
| Mort Scanlan | scanla001mor | 1890 | +5/14-5/22+ | Troy | New York State League | Troy, NY | |
| Scanlon | scanlo009--- | 1890 | Calumet | UppPenin | Calumet, MI | ||
| Joseph Schachern | schach003jos | 1890 | 4/5-6/1 | Austin Senators | Texas League | Austin, TX | |
| Joseph Schachern | schach003jos | 1890 | 6/24-10/12 | Portland | Pacific Northwest League | Portland, OR | |
| Schaefer | schaef001--- | 1890 | +8/31+ | Chicago West Ends | Chicago City League | Chicago, IL | |
| W. T. Scharft | 1890 | Watertown | Independent | Watertown, NY | |||
| Gus Scharringhausen | sherin001j-- | 1890 | 3/30-5/8 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Gus Scharringhausen | sherin001j-- | 1890 | 5/16-5/20 | Dallas Hams | Texas League | Dallas, TX | |
| Gus Scharringhausen | sherin001j-- | 1890 | 5/21-6/1 | Austin Senators | Texas League | Austin, TX | |
| Gus Scharringhausen | sherin001j-- | 1890 | Tyler | Independent | Tyler, TX | ||
| Gus Scharringhausen | sherin001j-- | 1890 | Pine Bluff | Independent | Pine Bluff, AR | ||
| Bob Schaub | schaub001rob | 1890 | 6/3-7/4 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Fred Schaub | schaub001fre | 1890 | 5/1-7/5 | Marion/Logansport | Indiana State League | Marion, IN | |
| Fred Schaub | schaub001fre | 1890 | Peru | Indiana State League | Peru, IN | ||
| Ted Scheffler | scheff001ted | 1890 | -10/15 | 119 g. | Rochester | American Association | Rochester, NY |
| Frank Scheibeck | scheib001fra | 1890 | 134 g. | Toledo | American Association | Toledo, OH | |
| Jack Scheible | scheib001jac | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | ||
| Jack Scheible | scheib001jac | 1890 | 5/6-7/9 | Springfield | Tri-State League | Springfield, OH | |
| Jack Scheible | scheib001jac | 1890 | 7/12-8/7 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| William Schellerman | schell002wil | 1890 | 5/3-5/31 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| William Schellerman | schell002wil | 1890 | 6/4-6/11 | Buffalo Bisons/Montreal | International Association | Montreal, QC | |
| William Schellerman | schell002wil | 1890 | 6/14 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| William Schellerman | schell002wil | 1890 | 6/26 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Al Schellhase | schell001al- | 1890 | 5/7- | 9 g. | Boston | National League | Boston, MA |
| Al Schellhase | schell001al- | 1890 | 47 g. | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Harry Scherer | schere001har | 1890 | 8/18 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Luke Schildknecht | schild001luk | 1890 | 6/26-8/3 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Luke Schildknecht | schild001luk | 1890 | Port Townsend | Independent | Port Townsend, WA | ||
| Gus Schmelz | schmel001gus | 1890 | Cleveland | National League | Cleveland, OH | ||
| Gus Schmelz | schmel001gus | 1890 | Columbus | American Association | Columbus, OH | ||
| Crazy Schmit | schmit001fre | 1890 | 4/21- | 11 g. | Pittsburgh | National League | Pittsburgh, PA |
| Crazy Schmit | schmit001fre | 1890 | 8/24-9/29 | St. Paul Apostles | Western Association | St. Paul, MN | |
| William Schneider | schnei005wil | 1890 | , | ||||
| Jake Schnur | schnur000jak | 1890 | +8/31+ | Chicago Whitings | Chicago City League | Chicago, IL | |
| Nic Schnur | schnur000n-- | 1890 | +8/31+ | Chicago Whitings | Chicago City League | Chicago, IL | |
| Jumbo Schoeneck | schoen001jum | 1890 | 4/19-9/2 | New Haven | Atlantic Association | New Haven, CT | |
| Schoenmaker | schoen005--- | 1890 | 5/12-5/13 | Portland | Pacific Northwest League | Portland, OR | |
| Schof | schof-001--- | 1890 | 6/17-6/18 | Dayton Reds | Tri-State League | Dayton, OH | |
| Schofield | schofi000--- | 1890 | 7/1 | Albany | New York State League | Albany, NY | |
| Otto Schomberg | schomb001ott | 1890 | 6/22 | Umpire | WestA | , | |
| Louis Schrader | 1890 | 6/7 | MLB Umpire | American Association | , | ||
| John Schrant | schran001joh | 1890s | Univ. of Kansas | College | , | ||
| Pop Schriver | schriv001wil | 1890 | 57 g. | Philadelphia | National League | Philadelphia, PA | |
| Schu | schu--001--- | 1890 | 8/2-8/11 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Schuebly | schueb001--- | 1890 | 7/4 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| John Schultz | schult007joh | 1890 | Beverly | Independent | Beverly, NJ | ||
| John Schweitzer | schwei001joh | 1890 | +5/23+ | Kokomo | Indiana State League | Kokomo, IN | |
| Milt Scott | scott-001mil | 1890 | 5/1-7/24 | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Sears | sears-010--- | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Sechrist | sechri000--- | 1890 | 5/15-6/28+ | Erie | New York-Pennsylvania League | Erie, PA | |
| Emmett Seery | seery-001emm | 1890 | 104 g. | Brooklyn | Players League | Brooklyn, NY | |
| Sehort/Zehert | sehort001--- | 1890 | 4/30-6/22 | Dayton Reds | Tri-State League | Dayton, OH | |
| Frank Sekins | sekins000fra | 1890 | 5/15-5/17 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| William Selden | seldon001wil | 1890 | 5/1-7/21 | York Monarchs | Eastern Interstate League | York, PA | |
| Frank Selee | selee-001fra | 1890 | g. | Boston | National League | Boston, MA | |
| Seller | seller002--- | 1890 | 7/26 | McKeesport | Tri-State League | McKeesport, PA | |
| Charles Selna | selna-001cha | 1890 | 3/23-11/23 | Stockton | California League | Stockton, CA | |
| Billy Serad | serad-001bil | 1890 | 5/2-7/4 | Toronto Canucks | International Association | Toronto, ON | |
| Billy Serad | serad-001bil | 1890 | 7/16-9/25 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Ed Seward | seward001ed- | 1890 | 26 g. | Philadelphia | American Association | Philadelphia, PA | |
| Frank Sexton | sexton001fra | 1890-91 | Brown Univ. | College | , | ||
| Cy Seymour | seymou001jam | 1890s | Albany Ridgeway | Independent | Albany, NY | ||
| Orator Shafer | shafer001ora | 1890 | -9/13 | 100 g. | Philadelphia | American Association | Philadelphia, PA |
| Taylor Shafer | shafer001tay | 1890 | 4/17-9/16 | 69 g. | Philadelphia | American Association | Philadelphia, PA |
| Charlie Shaffer | shaffe001cha | 1890 | Willaimsport | Independent | Willaimsport, PA | ||
| James Shamus | shamus001jam | 1890 | 5/16-7/15 | Erie | New York-Pennsylvania League | Erie, PA | |
| Shannon | shanno007--- | 1890 | 5/?- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Dan Shannon | shanno004dan | 1890 | 19 g. | Philadelphia | Players League | Philadelphia, PA | |
| Dan Shannon | shanno004dan | 1890 | 83 g. | New York | Players League | New York, NY | |
| Joseph Shannon | shanno003jos | 1890 | U.ofPennsylvania | College | , | ||
| Owen Shannon | shanno002owe | 1890 | Manistee | Michigan State League | Manistee, MI | ||
| George Sharp | sharp-001geo | 1890 | 4/29-5/30 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| George Sharp | sharp-001geo | 1890 | 6/3-7/8 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| George Sharp | sharp-001geo | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| Henry Sharp | sharp-001hen | 1890 | 7/4 | Oakland Colonels | California League | Oakland, CA | |
| Peck Sharp | sharp-001jim | 1890 | 5/1-9/24+ | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Joseph Sharpe | sharpe001jos | 1890 | 4/29-7/19 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Joseph Sharpe | sharpe001jos | 1890 | 7/25 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Joseph Sharpe | sharpe001jos | 1890 | 8/1-8/3 | Canton Nadjys | Tri-State League | Canton, OH | |
| George Sharrott | sharro001geo | 1890 | 5/15-5/28 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Jack Sharrott | sharro001jac | 1890 | 4/22- | 32 g. | New York | National League | New York, NY |
| Bill Sharsig | sharsi001bil | 1890 | Philadelphia | American Association | Philadelphia, PA | ||
| Sam Shaw | shaw--002sam | 1890 | 4/21-5/7 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Sam Shaw | shaw--002sam | 1890 | 5/23-8/4 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Samuel Shaw | shaw--003sam | 1890 | 8/22-11/8 | Oakland Colonels | California League | Oakland, CA | |
| Samuel Shaw | shaw--003sam | 1890 | 11/16-11/23 | San Francisco Haverlys | California League | San Francisco, CA | |
| Edward Shay | shay--002edw | 1890 | 6/19-9/11 | Cobleskill | New York State League | Cobleskill, NY | |
| Eli Shay | shay--001edw | 1890 | 5/1-5/5 | Easton | Eastern Interstate League | Easton, PA | |
| J. Shay | shay--000j-- | 1890 | +6/28-9/3+ | Olean | New York-Pennsylvania League | Olean, NY | |
| John Shay | shay--002joh | 1890 | +6/2-8/7+ | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Shea | shea--034--- | 1890 | +5/15+ | Muncie | Indiana State League | Muncie, IN | |
| Joseph Shea | shea--001jos | 1890 | 3/23-11/23 | San Francisco Haverlys | California League | San Francisco, CA | |
| Mike Shea | shea--001mik | 1890 | New Orleans | Independent | New Orleans, LA | ||
| Patr. Shea | shea--002pat | 1890 | +6/3-9/24+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| John Shearon | shearo002joh | 1890 | 5/15-7/21 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Sheehan | sheeha023--- | 1890 | +6/5-7/19 | Albany | New York State League | Albany, NY | |
| Sheehan | sheeha023--- | 1890 | Oneonta | New York State League | Oneonta, NY | ||
| Owen Sheehan | sheeha001owe | 1890 | Manistee | Michigan State League | Manistee, MI | ||
| Owen Sheehan | sheeha001owe | 1890 | Trenton | Independent | Trenton, NJ | ||
| Timothy Sheehan | sheeha001bif | 1890 | 4/19-5/9 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Timothy Sheehan | sheeha001bif | 1890 | 5/14-5/22 | Hartford | Atlantic Association | Hartford, CT | |
| Timothy Sheehan | sheeha001bif | 1890 | 9/2- | Hartford | semi-p | Hartford, CT | |
| John Shelley | 1890 | Stockton | California League | Stockton, CA | |||
| Alfred Sheppard/erd | sheppa001alf | 1890 | 5/2-7/5 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay, MI | |
| Alfred Sheppard/erd | sheppa001alf | 1890 | 7/19-7/27 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Alfred Sheppard/erd | sheppa001alf | 1890 | 7/31-8/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Sherer | sherer002--- | 1890 | 8/18 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Jack Sheridan | sherid001jac | 1890 | 3/23-6/15 | Umpire | Calif | , | |
| Jack Sheridan | sherid001jac | 1890 | 7/4- | 78 g. | MLB Umpire | Players League | , |
| Jack Sheridan | sherid001jac | 1890 | 11/17-11/22 | Umpire | Calif | , | |
| Jimmy Sherlock | sherlo001jim | 1890 | 5/17 | Dayton Reds | Tri-State League | Dayton, OH | |
| Sherman | sherma008--- | 1890 | 4/30-8/9 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Sharon Sherman | 1890 | 5/24 | MLB Umpire | American Association | , | ||
| Daniel Shields | shield002dan | 1890 | 5/15-9/10 | Erie | New York-Pennsylvania League | Erie, PA | |
| Billy Shindle | shindl001wil | 1890 | 132 g. | Philadelphia | Players League | Philadelphia, PA | |
| Tim Shinnick | shinni002tim | 1890 | 4/19- | 133 g. | Louisville | American Association | Louisville, KY |
| George Shoch | shoch-001geo | 1890 | 4/17-9/29 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Short | short-007--- | 1890 | +5/14-5/24+ | Troy | New York State League | Troy, NY | |
| Short | short-008--- | 1890 | +6/16-6/20+ | Meadville | New York-Pennsylvania League | Meadville, PA | |
| John Shoup | shoupe001joh | 1890 | 4/30-8/7 | McKeesport | Tri-State League | McKeesport, PA | |
| Lev Shreve | shreve001lev | 1890 | 5/24-6/27 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Lev Shreve | shreve001lev | 1890 | 7/3-7/14 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Frank Shugart | shugar001fra | 1890 | 4/29-8/15 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Frank Shugart | shugar001fra | 1890 | 8/23- | 29 g. | Chicago | Players League | Chicago, IL |
| Rush Shumway | shumwa001rus | 1890 | +5/13-6/19+ | Anderson | Indiana State League | Anderson, IN | |
| A. Sidener | sidene001a-- | 1890 | Kearney | Independent | Kearney, NE | ||
| Henry Siebel | siebel001hen | 1890 | 4/19-7/4 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Fred Siefke | siefke001fre | 1890 | 5/2-6/1 | 16 g. | Brooklyn | American Association | Brooklyn, NY |
| Fred Siefke | siefke001fre | 1890 | 7/4-8/6+ | Albany | New York State League | Albany, NY | |
| Ed Silch | silch-001ed- | 1890 | 4/17-5/1 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Ed Silch | silch-001ed- | 1890 | 5/24-6/15 | Spokane | Pacific Northwest League | Spokane, WA | |
| Joe Simmons | simmon004jos | 1890 | 4/23-7/26 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Hank Simon | simon-001hen | 1890 | -10/12 | 89 g. | Brooklyn | American Association | Brooklyn, NY |
| Hank Simon | simon-001hen | 1890 | 38 g. | Syracuse | American Association | Syracuse, NY | |
| William Simon/Sinon | 1890 | 6/?-8/4 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| W.H. Simpson | simpso000wh- | 1890 | Olean | New York-Pennsylvania League | Olean, NY | ||
| Sinclair | 1890 | Ishpeming | UppPenin | Ishpeming, MI | |||
| Arthur Sippi | sippi-001art | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| Arthur Sippi | sippi-001art | 1890 | 6/14-7/5 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Arthur Sippi | sippi-001art | 1890 | +8/2-9/15 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| James Skerritt | 1890 | 6/7 | MLB Umpire | American Association | , | ||
| John Slagle | slagle002joh | 1890 | 6/3-6/13 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| John Slagle | slagle002joh | 1890 | -6/ | Muncie | Indiana State League | Muncie, IN | |
| Ed Slater | slater001hen | 1890 | 4/18-5/3 | Kansas City Blues | Western Association | Kansas City, MO | |
| Ed Slater | slater001hen | 1890 | 5/16-8/17 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Joe Slattery | slatte001joe | 1890 | 5/13 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Mike Slattery | slatte001mik | 1890 | 97 g. | New York | Players League | New York, NY | |
| G. Slifer | slifer000g-- | 1890 | 5/12-7/5 | Utica | New York State League | Utica, NY | |
| G. Slifer | slifer000g-- | 1890 | Albany | New York State League | Albany, NY | ||
| Will Smalley | smalle001wil | 1890 | 4/19- | 136 g. | Cleveland | National League | Cleveland, OH |
| Bill Smink | smink-001wil | 1890 | 7/8-7/15 | McKeesport | Tri-State League | McKeesport, PA | |
| Smith | smith-229--- | 1890 | 6/9 | Easton | Eastern Interstate League | Easton, PA | |
| Smith | smith-193--- | 1890 | 6/18 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Smith | smith-083--- | 1890 | 6/20 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Smith | smith-174--- | 1890 | 8/22 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Smith | smith-337--- | 1890 | +7/4-8/7+ | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Smith | smith-338--- | 1890 | New York Metroplitans | Independent | New York, NY | ||
| Smith | smith-338--- | 1890 | 7/4-9/30 | Albany | New York State League | Albany, NY | |
| Smith | smith-244--- | 1890 | 6/9-7/5 | Springfield | Tri-State League | Springfield, OH | |
| Andy Smith | smith-008and | 1890 | 6 g. | Sacramento Senators | California League | Sacramento, CA | |
| Andy Smith | smith-008and | 1890 | 5/31-8/3 | Stockton | California League | Stockton, CA | |
| Billy Smith | smith-011wil | 1890 | 5/1-6/25 | Elkhart | Indiana State League | Elkhart, IN | |
| Billy Smith | smith-011wil | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Billy Smith | smith-244--- | 1890 | 24 g.? | Springfield | Tri-State League | Springfield, OH | |
| Bob Smith | smith-006bob | 1890 | Pittsburgh West End | Independent | Pittsburgh, PA | ||
| Bob Smith | smith-006bob | 1890 | 6/25-7/7 | McKeesport | Tri-State League | McKeesport, PA | |
| Edgar Smith | smith-003edg | 1890 | 5/1-7/7 | Detroit Wolverines | International Association | Detroit, MI | |
| Edgar Smith | smith-003edg | 1890 | - 8/12 | 8 g. | Cleveland | National League | Cleveland, OH |
| Elmer Smith | smith-004elm | 1890 | 4/18-9/29 | Kansas City Blues | Western Association | Kansas City, MO | |
| Emil Smith | smith-001emi | 1890 | 5/3-5/31 | Buffalo Bisons/Montreal | International Association | Buffalo, NY | |
| Emil Smith | smith-001emi | 1890 | 6/4-6/11 | Buffalo Bisons/Montreal | International Association | Montreal, QC | |
| Emil Smith | smith-001emi | 1890 | 6/14-6/21 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| F. H. Smith | 1890 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |||
| Fred Smith | smith-016fre | 1890 | 4/18-10/12 | 38 g. | Toledo | American Association | Toledo, OH |
| George Smith | smith-028geo | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| George Smith | smith-026geo | 1890 | Pittsburgh Tarentum | Independent | Pittsburgh, PA | ||
| Germany Smith | smith-013geo | 1890 | 129 g. | Brooklyn | National League | Brooklyn, NY | |
| Hank Smith | smith-002han | 1890 | 4/19-5/3 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Hank Smith | smith-002han | 1890 | 5/31-7/22 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Hank Smith | smith-002han | 1890 | 8/2-9/25 | Lebanon | Atlantic Association | Lebanon, PA | |
| Harry Smith | smith-024har | 1890 | MiSt | , | |||
| Harry Smith | smith-024har | 1890 | Richmond | Independent | Richmond, VA | ||
| Harry Smith | smith-024har | 1890 | New Haven | Independent | New Haven, CT | ||
| Harry Smith | smith-028har | 1890 | 7/6-7/8 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Henry Smith | smith-005hen | 1890 | Brattleboro | Brattleboro, VT | |||
| Hugh Smith | smith-004hug | 1890 | 5/23-6/15 | Hartford | Atlantic Association | Hartford, CT | |
| John Smith | smith-052joh | 1890 | 3/30-4/1 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| John Smith | smith-052joh | 1890 | 4/2-6/1 | Austin Senators | Texas League | Austin, TX | |
| John Smith | smith-053joh | 1890 | 4/14-6/2 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| John Smith | smith-053joh | 1890 | 6/15-8/2 | Canton Nadjys | Tri-State League | Canton, OH | |
| John Smith | smith-053joh | 1890 | Fort Worth Panthers | Texas League | Fort Worth, TX | ||
| Jud Smith | smith-001jud | 1890 | Ohio State U. | College | , | ||
| Jud Smith | smith-001jud | 1890 | 5/3-5/20 | Portland | Pacific Northwest League | Portland, OR | |
| Leo Smith | smith-007leo | 1890 | 4/19-8/26 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Leo Smith | smith-007leo | 1890 | 8/28-10/15 | 35 g. | Rochester | American Association | Rochester, NY |
| Nicholas Smith | smith-002nic | 1890 | 4/26-6/7 | Kansas City Blues | Western Association | Kansas City, MO | |
| Pacer Smith | smith-041cha | 1890 | 5/1-8/9 | Ottawa | Illinois-Iowa League | Ottawa, IL | |
| Phenomenal Smith | smith-013joh | 1890 | 26 g. | Philadelphia | National League | Philadelphia, PA | |
| Phenomenal Smith | smith-013joh | 1890 | 5 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Pop Smith | smith-001pop | 1890 | 134 g. | Boston | National League | Boston, MA | |
| Skyrocket Smith | smith-001sky | 1890 | 5/3-10/12 | Seattle | Pacific Northwest League | Seattle, WA | |
| W.H. Smith | smith-000wh- | 1890 | 5/15-5/21+ | Bradford | New York-Pennsylvania League | Bradford, PA | |
| H. Smithson | 1890 | Winchester | Independent | Winchester, VA | |||
| John Sneed | sneed-002joh | 1890 | - 9/22 | 9 g. | Toledo | American Association | Toledo, OH |
| John Sneed | sneed-002joh | 1890 | 128 g. | Columbus | American Association | Columbus, OH | |
| James Sneeden | sneede001jam | 1890 | Staten Island | Amat | Staten Island, NY | ||
| Sniffen | 1890 | +9/22+ | Canisteo | WNYSt | Canisteo, NY | ||
| Snyder | snyder018--- | 1890 | 5/3-5/23 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| Benjamin Snyder | snyder003ben | 1890 | 5/3-10/12 | Seattle | Pacific Northwest League | Seattle, WA | |
| Charles Snyder | snyder003cha | 1890 | 6/4-7/5 | Easton | Eastern Interstate League | Easton, PA | |
| Charles Snyder | snyder003cha | 1890 | 7/17-7/21 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Charles Snyder | snyder003cha | 1890 | 7/31 | Lebanon | Atlantic Association | Lebanon, PA | |
| Charles Snyder | snyder003cha | 1890 | 9/19- | 9 g. | Philadelphia | American Association | Philadelphia, PA |
| Pop Snyder | snyder001pop | 1890 | 13 g. | Cleveland | Players League | Cleveland, OH | |
| Somers | somers007--- | 1890 | 5/1-7/23 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| Enoch Somers | 1890 | Newark | Independent | Newark, OH | |||
| Joe Sommer | sommer001joe | 1890 | 5/16-8/26 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Joe Sommer | sommer001joe | 1890 | -10/15 | 9 g. | Cleveland | National League | Cleveland, OH |
| Joe Sommer | sommer001joe | 1890 | 38 g. | Baltimore | American Association | Baltimore, MD | |
| Andy Sommers | sommer001pet | 1890 | 6/26-8/15 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Andy Sommers | sommer001pet | 1890 | -10/4 | 17 g. | New York | National League | New York, NY |
| Andy Sommers | sommer001pet | 1890 | 9 g. | Cleveland | National League | Cleveland, OH | |
| Charles Sommers | sommer002cha | 1890 | 5/8-5/11 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Pete Sommers | sommer001jos | 1890 | 9/25-10/9 | Seattle | Pacific Northwest League | Seattle, WA | |
| Pete Sommers | sommer002pet | 1890 | 4/19-7/30 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Pete Sommers | sommer002pet | 1890 | 8/11-8/15 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Sowders | sowder001--- | 1890 | 6/18-7/5 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Bill Sowders | sowder001bil | 1890 | -6/19 | 17 g. | Pittsburgh | National League | Pittsburgh, PA |
| Bill Sowders | sowder001bil | 1890 | 7/4-7/17 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Bill Sowders | sowder001bil | 1890 | 7/22-7/31 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Bill Sowders | sowder001bil | 1890 | Indianapolis | Amat | Indianapolis, IN | ||
| Dave Sowders | sowder001dav | 1890 | 4/30-5/17 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Dave Sowders | sowder001dav | 1890 | +5/20+ | Muncie | Indiana State League | Muncie, IN | |
| Dave Sowders | sowder001dav | 1890 | 6/3-7/1 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| John Sowders | sowder001joh | 1890 | 40 g. | Brooklyn | Players League | Brooklyn, NY | |
| Tim Spalding | 1890 | Williams Col. | College | , | |||
| Tim Spalding | 1890 | 7/4- | Albany Ridgefields | Alb&Ren | Albany, NY | ||
| Chick Speer | speer-003geo | 1890 | 3/23-11/23 | San Francisco Haverlys | California League | San Francisco, CA | |
| Speers | speers000--- | 1890 | +5/15+ | Oneonta | New York State League | Oneonta, NY | |
| Bernard Speidel | speide001ber | 1890 | 4/19-5/3 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Bernard Speidel | speide001ber | 1890 | 5/20-7/6 | Dayton Reds | Tri-State League | Dayton, OH | |
| Bernard Speidel | speide001ber | 1890 | 7/9 | Springfield | Tri-State League | Springfield, OH | |
| Bernard Speidel | speide001ber | 1890 | 7/14-8/3 | Canton Nadjys | Tri-State League | Canton, OH | |
| Harry Spies | spies-001hen | 1890 | 5/1-5/30 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Harry Spies | spies-001hen | 1890 | Fort Worth | TXWinter | Fort Worth, TX | ||
| Frank Spill | spill-001fra | 1890 | 5/10-7/19 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Spillman | 1890 | +8/31+ | Chicago Franklins | Chicago City League | Chicago, IL | ||
| H.D. Spindler | spindl002--- | 1890 | 5/1-5/2 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay, MI | |
| George Spore | spore-001geo | 1890 | 5/1- | Ottawa | Illinois-Iowa League | Ottawa, IL | |
| Sprague | spragu004--- | 1890 | 5/14-5/26 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Charlie Sprague | spragu001cha | 1890 | -10/10 | 55 g. | Toledo | American Association | Toledo, OH |
| Ed Springer | spring001ed- | 1890 | 5/10-6/13 | Lansing | Michigan State League | Lansing, MI | |
| Ed Springer | spring001ed- | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Oliver Sprogell | sproge001oli | 1890 | 5/3-6/20 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Oliver Sprogell | sproge001oli | 1890 | 6/24-7/4 | Hamilton Hams/Montreal | International Association | Montreal, QC | |
| Oliver Sprogell | sproge001oli | 1890 | 7/4-9/30 | Albany | New York State League | Albany, NY | |
| Ed Spurney | spurne001ed- | 1890 | +6/2-9/4 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| T.J. Stack | stack-000tj- | 1890 | Troy | New York State League | Troy, NY | ||
| Stafford | staffo001bob | 1890 | 10/12 | 1 g. | Philadelphia | American Association | Philadelphia, PA |
| Stafford | staffo007--- | 1890 | 8/29-9/3 | Troy | New York State League | Troy, NY | |
| James Stafford | staffo001gen | 1890 | 4/19-7/24 | Worcester Grays | Atlantic Association | Worcester, MA | |
| James Stafford | staffo001gen | 1890 | Putnam | Independent | Putnam, CT | ||
| James Stafford | staffo001gen | 1890 | 8/27- | 15 g. | Buffalo | Players League | Buffalo, NY |
| John Stafford | staffo001joh | 1890 | Holy Cross Col. | College | , | ||
| John Stafford | staffo001joh | 1890 | 6/23-7/28 | Worcester Grays | Atlantic Association | Worcester, MA | |
| John Stafford | staffo001joh | 1890 | 8/9-8/20 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Amos Stagg | 1890 | +5/3+ | Yale University | College | , | ||
| Chick Stahl | stahl-001cha | 1890 | Paducah | Independent | Paducah, KY | ||
| Stahlman | stahlm002--- | 1890 | 7/7 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| John Staib | staib-001joh | 1890 | 5/9 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| John Staib | staib-001joh | 1890 | 5/24-8/13 | Hartford | Atlantic Association | Hartford, CT | |
| John Staib | staib-001joh | 1890 | 8/27-9/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Harry Staley | staley001har | 1890 | 48 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| George Stallings | stalli002geo | 1890 | 5/22- | 4 g. | Brooklyn | National League | Brooklyn, NY |
| George Stallings | stalli002geo | 1890 | 6/22-8/13 | Hartford | Atlantic Association | Hartford, CT | |
| George Stalze | stalze001geo | 1890 | 4/19-7/28 | Worcester Grays | Atlantic Association | Worcester, MA | |
| George Stalze | stalze001geo | 1890 | 8/12-9/30 | Lebanon | Atlantic Association | Lebanon, PA | |
| Stampohe | 1890 | Richmond | Independent | Richmond, VA | |||
| Stampohe | 1890 | Oneonta | New York State League | Oneonta, NY | |||
| Stancliff | 1890 | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |||
| Matt Stanley | stanle001mat | 1890 | 6/19-6/22 | Stockton | California League | Stockton, CA | |
| Matt Stanley | stanle001mat | 1890 | 7/12 | San Francisco Haverlys | California League | San Francisco, CA | |
| Stanton | 1890 | Umpire | PacNW | , | |||
| Edward Stapleton | staple002edw | 1890 | 3/23-11/23 | Sacramento Senators | California League | Sacramento, CA | |
| Frank Stapleton | staple003fra | 1890 | 4/30-7/8 | Dayton Reds | Tri-State League | Dayton, OH | |
| Frank Stapleton | staple003fra | 1890 | 7/21-9/2 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Staunton | 1890 | 4/19-5/30+ | Umpire | Tx | , | ||
| Dan Stearns | stearn002dan | 1890 | 4/18-9/29 | Kansas City Blues | Western Association | Kansas City, MO | |
| William Stecher | steche001wil | 1890 | 5/2-6/26 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| William Stecher | steche001wil | 1890 | 7/4+ | Milford | Independent | Milford, DE | |
| William Stecher | steche001wil | 1890 | 9/6-10/9 | 10 g. | Philadelphia | American Association | Philadelphia, PA |
| C. Steen | 1890 | +9/27+ | Pullman YMCA | Independent | Pullman, IL | ||
| Ed Stein | stein-001ed- | 1890 | 5/3-7/4 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay, MI | |
| Ed Stein | stein-001ed- | 1890 | 7/24- | 20 g. | Chicago | National League | Chicago, IL |
| William Stein | stein-003--- | 1890 | 5/7-6/27 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| William Stein | stein-003--- | 1890 | 7/5-7/15 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| William Stein | stein-003--- | 1890 | 7/22 | 1 g. | Philadelphia | American Association | Philadelphia, PA |
| Bill Stellberger | stellb001bil | 1890 | Manistee | Michigan State League | Manistee, MI | ||
| Jake Stenzel | stenze001jak | 1890 | 3/30-6/7 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| Jake Stenzel | stenze001jak | 1890 | 6/16- | 11 g. | Chicago | National League | Chicago, IL |
| Jake Stenzel | stenze001jak | 1890 | 9/13-9/16 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Ben Stephens | stephe001ben | 1890 | 4/30-8/15 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Ben Stephens | stephe001ben | 1890 | 8/24-10/8 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Benjamin Stephens | stephe002ben | 1890 | 7/1-9/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| John Sterling | sterli002joh | 1890 | 5/1-5/24 | Lancaster/Allentown | Eastern Interstate League | Lancaster, PA | |
| John Sterling | sterli011--- | 1890 | 6/13-6/27 | Albany | New York State League | Albany, NY | |
| John Sterling | sterli002joh | 1890 | 10/12 | 1 g. | Philadelphia | American Association | Philadelphia, PA |
| Frank Stetson | stetso001fra | 1890 | 4/30-7/9 | Springfield | Tri-State League | Springfield, OH | |
| William Stevens | steven010wil | 1890 | 3/23-11/23 | San Francisco Haverlys | California League | San Francisco, CA | |
| Barney Stevenson | steven001bar | 1890 | 4/19-4/22 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Ace Stewart | stewar001ace | 1890 | 5/-6/ | Peru | Indiana State League | Peru, IN | |
| Ace Stewart | stewar001ace | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| Claude Stewart | stewar002cla | 1890 | 5/9-5/16 | Stockton | California League | Stockton, CA | |
| Will Stickney | stickn001wil | 1890 | 3/23-8/24 | Oakland Colonels | California League | Oakland, CA | |
| Jack Stivetts | stivet001jac | 1890 | 67 g. | St. Louis Browns | American Association | St. Louis, MO | |
| William Stockamp | stocka001wil | 1890 | 4/4-5/12 | Waco Babies | Texas League | Waco, TX | |
| Len Stockwell | stockw001len | 1890 | -5/19 | 2 g. | Cleveland | National League | Cleveland, OH |
| Len Stockwell | stockw001len | 1890 | 7/5-7/12 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Len Stockwell | stockw001len | 1890 | 8/1-8/15 | Oakland Colonels | California League | Oakland, CA | |
| Len Stockwell | stockw001len | 1890 | 8/24-11/9 | Stockton | California League | Stockton, CA | |
| Len Stockwell | stockw001len | 1890 | 11/14 | Oakland Colonels | California League | Oakland, CA | |
| James Stokes | stokes008--- | 1890 | 5/1-7/5 | Marion/Logansport | Indiana State League | Marion, IN | |
| James Stokes | stokes008--- | 1890 | Monmouth | Illinois-Iowa League | Monmouth, IL | ||
| George Stovey | stovey001geo | 1890 | Hoosic Falls | Alb&Ren | Hoosic Falls, NY | ||
| George Stovey | stovey001geo | 1890 | +5/3+ | Cuban Giants | Independent | Cuban, | |
| George Stovey | stovey001geo | 1890 | +6/20-7/12+ | Hoosic Falls | Alb&Ren | Hoosic Falls, NY | |
| George Stovey | stovey001geo | 1890 | 8/2- | 2 g. | Troy | New York State League | Troy, NY |
| George Stovey | stovey001geo | 1890 | -9/ | Hoosic Falls | Alb&Ren | Hoosic Falls, NY | |
| Harry Stovey | stovey001har | 1890 | 121 g. | Boston | Players League | Boston, MA | |
| Scott Stratton | stratt001sco | 1890 | 55 g. | Louisville | American Association | Louisville, KY | |
| Joe Strauss | straus001joe | 1890 | 4/17-4/27 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Joe Strauss | straus001joe | 1890 | 5/11-9/30 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Harry Strebeigh | 1890 | 2nd,NYNG & Capt | , | ||||
| Cub Stricker | strick001cub | 1890 | 127 g. | Cleveland | Players League | Cleveland, OH | |
| George Strief | strief001geo | 1890 | 6/7-6/21 | Canton Nadjys | Tri-State League | Canton, OH | |
| George Strief | strief001geo | 1890 | -10/3 | 51 g. | MLB Umpire | National League | , |
| Con Strothers | stroth001joh | 1890 | 5/3-9/17 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Arthur Stuart | stuart001art | 1890 | 6/21-8/20 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Neil Stynes | stynes001nei | 1890 | 9/8-9/9 | 2 g. | Cleveland | Players League | Cleveland, OH |
| Tony Suck | suck--001ton | 1890 | +8/31+ | Umpire | ChicCity | , | |
| Harry Suggs | suggs-001har | 1890 | 5/1- | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Max Suhr | suhr--001max | 1890 | Dubuque | Illinois-Iowa League | Dubuque, IA | ||
| Sullivan | sulliv122--- | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Sullivan | sulliv056--- | 1890 | 5/28 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Sullivan | sulliv068--- | 1890 | 6/?- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Sullivan | sulliv056--- | 1890 | 7/8-8/8 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Bill Sullivan | sulliv002bil | 1890 | 4/19-6/23 | 6 g. | Syracuse | American Association | Syracuse, NY |
| Dennis Sullivan | sulliv003den | 1890 | Boston Globe | Amat | Boston, MA | ||
| Dennis Sullivan | sulliv003den | 1890 | 5/3-7/15 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Jack Sullivan | sulliv005jac | 1890 | Kokomo | Indiana State League | Kokomo, IN | ||
| Jim Sullivan | sulliv006jam | 1890 | Stockton | Independent | Stockton, CA | ||
| Joseph Sullivan | sulliv009jos | 1890 | 5/7-5/24 | Hartford | Atlantic Association | Hartford, CT | |
| Joseph Sullivan | sulliv009jos | 1890 | 6/10-6/20 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Marty Sullivan | sulliv003mar | 1890 | 121 g. | Boston | National League | Boston, MA | |
| Mike Sullivan | sulliv002mik | 1890 | 12 g. | Chicago | National League | Chicago, IL | |
| Pat Sullivan | sulliv003pat | 1890 | 7/30-8/2 | g. | Columbus | American Association | Columbus, OH |
| Robert Sullivan | 1890 | Ogdensburg | Independent | Ogdensburg, NY | |||
| Sleeper Sullivan | sulliv001sle | 1890 | 4/19-8/22 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Sleeper Sullivan | sulliv001sle | 1890 | 9/4-9/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Ted Sullivan | sulliv001tp- | 1890 | 4/19-8/4 | Washington Senators | Atlantic Association | Washington, DC | |
| William Sullivan | sulliv009wil | 1890 | 4/28-5/10 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| William Sullivan | sulliv009wil | 1890 | 5/19-6/1 | Dallas Hams | Texas League | Dallas, TX | |
| Kid Summers | summer001kid | 1890 | 7/25-9/30 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Art Sunday | sunday001art | 1890 | 5/5-8/26 | 24 g. | Brooklyn | Players League | Brooklyn, NY |
| Billy Sunday | sunday001bil | 1890 | 86 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Billy Sunday | sunday001bil | 1890 | 31 g. | Philadelphia | National League | Philadelphia, PA | |
| Elmer Sutcliffe | sutcli001sy- | 1890 | 99 g. | Cleveland | Players League | Cleveland, OH | |
| Ezra Sutton | sutton001ezr | 1890 | 4/21-7/15 | Hartford | Atlantic Association | Hartford, CT | |
| Frank Swan | swan--002--- | 1890 | 3/23-8/15 | Stockton | California League | Stockton, CA | |
| Ed Swartwood | swartw001ed- | 1890 | 126 g. | Toledo | American Association | Toledo, OH | |
| Park Swartzel | swartz001par | 1890 | 4/22-9/28 | Kansas City Blues | Western Association | Kansas City, MO | |
| Charlie Sweeney | sweene004cha | 1890 | 3/23-7/10 | San Francisco Haverlys | California League | San Francisco, CA | |
| Charlie Sweeney | sweene004cha | 1890 | 7/13-8/3 | Oakland Colonels | California League | Oakland, CA | |
| Charlie Sweeney | sweene004cha | 1890 | 9/16-10/4 | Umpire | Calif | , | |
| Dan Sweeney | sweene001dan | 1890 | 4/29-8/9 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Dan Sweeney | sweene001dan | 1890 | 8/16-11/23 | Oakland Colonels | California League | Oakland, CA | |
| Dan Sweeney | sweene004dan | 1890 | 4/30-8/3 | Akron Akrons | Tri-State League | Akron, OH | |
| Frank Sweeney | sweene001fra | 1890 | +5/14+ | Johnstown-Gloversville | New York State League | Gloversville, NY | |
| Pete Sweeney | sweene001pet | 1890 | 49 g. | St. Louis Browns | American Association | St. Louis, MO | |
| Pete Sweeney | sweene001pet | 1890 | 7/3-8/14 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Pete Sweeney | sweene001pet | 1890 | -10/2 | 2 g. | Louisville | American Association | Louisville, KY |
| Pete Sweeney | sweene001pet | 1890 | 14 g. | Philadelphia | American Association | Philadelphia, PA | |
| Rooney Sweeney | sweene001roo | 1890 | 5/7 | London Tecumsehs | International Association | London, ON | |
| Sweigert | sweige001ham | 1890 | 10/12 | 1 g. | Philadelphia | American Association | Philadelphia, PA |
| Pop Swett | swett-001pop | 1890 | 5/3-10/4 | 40 g. | Boston | Players League | Boston, MA |
| Albert Swift | swift-001alb | 1890 | 4/19-6/1 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Albert Swift | swift-001alb | 1890 | 6/15-7/6 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Mart Swift | swift-002mar | 1890 | 5/1-7/5 | Easton | Eastern Interstate League | Easton, PA | |
| Mart Swift | swift-002mar | 1890 | 7/18-7/21 | Lebanon | Eastern Interstate League | Lebanon, PA | |
| Mart Swift | swift-002mar | 1890 | 7/31-9/29 | Lebanon | Atlantic Association | Lebanon, PA | |
| William Sworback | sworba001wil | 1890 | 5/21-5/30 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Lou Sylvester | sylves002lou | 1890 | Sacramento Senators | California League | Sacramento, CA | ||
| John Taber | taber-001joh | 1890 | 4/30-7/8 | 2 g. | Boston | National League | Boston, MA |
| Tamner | tamner001--- | 1890 | 5/?- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Tantlinger | tantli001--- | 1890 | 5/?- | Joliet | Illinois-Iowa League | Joliet, IL | |
| Edward Tate | tate--001pop | 1890 | 4/19-8/26 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Edward Tate | tate--001pop | 1890 | -10/15 | 19 g. | Baltimore | American Association | Baltimore, MD |
| Billy Taylor | taylor001bil | 1890 | Knoxville | Independent | Knoxville, TN | ||
| George Taylor | taylor004geo | 1890 | Lincoln Giants | Independent | Lincoln, NE | ||
| Harry Taylor | taylor006har | 1890 | 4/18- | 134 g. | Louisville | American Association | Louisville, KY |
| Jack Taylor | taylor004jac | 1890 | WNBrig-Corinthian | Independent | , | ||
| Wally Taylor | taylor001wal | 1890 | 4/29-6/1 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Wally Taylor | taylor001wal | 1890 | 6/4-8/17 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Wally Taylor | taylor001wal | 1890 | Ottawa | Illinois-Iowa League | Ottawa, IL | ||
| Walter Taylor | 1890 | 5/1-6/11 | Umpire | EIntSt | , | ||
| Walter Taylor | 1890 | 9/8-9/20 | MLB Umpire | American Association | , | ||
| Al Tebeau | tebeau002al- | 1890 | Muskegon | Michigan State League | Muskegon, MI | ||
| Al Tebeau | tebeau002al- | 1890 | 6/-7/ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Al Tebeau | tebeau002al- | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| George Tebeau | tebeau002geo | 1890 | 94 g. | Toledo | American Association | Toledo, OH | |
| Patsy Tebeau | tebeau001pat | 1890 | 110 g. | Cleveland | Players League | Cleveland, OH | |
| Pussy Tebeau | tebeau001pus | 1890 | 4/30-6/7 | Akron Akrons | Tri-State League | Akron, OH | |
| Pussy Tebeau | tebeau001pus | 1890 | 6/26-6/27+ | Albany | New York State League | Albany, NY | |
| John Tener | tener-002joh | 1890 | 20 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| Fred Tenney | tenney001fre | 1890-91 | Brown Univ. | College | , | ||
| Matt Tenniswood | tennis001m-- | 1890 | Camden | Independent | Camden, NJ | ||
| Matt Tenniswood | tennis001m-- | 1890 | 6/14-6/17 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Edmund Terrien | terrie001edm | 1890 | 4/19-6/5 | New Haven | Atlantic Association | New Haven, CT | |
| Edmund Terrien | terrie001edm | 1890 | 6/21-7/28 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Edmund Terrien | terrie001edm | 1890 | +8/22-9/25+ | Troy | New York State League | Troy, NY | |
| Winslow Terrill | terril001win | 1890 | +5/3+ | Cuban Giants | Independent | Cuban, | |
| Winslow Terrill | terril001win | 1890 | 5/29-7/17 | York Monarchs | Eastern Interstate League | York, PA | |
| Adonis Terry | terry-001ado | 1890 | 99 g. | Brooklyn | National League | Brooklyn, NY | |
| Edward Thayer | thayer001edw | 1890 | 4/17-4/24 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Joseph Theisen | theise001jos | 1890 | Meriden Southington | Independent | Meriden, CT | ||
| Joseph Theisen | theise001jos | 1890 | 6/20-7/28 | Hartford | Atlantic Association | Hartford, CT | |
| Thomas | thomas106--- | 1890 | +5/20+ | Muncie | Indiana State League | Muncie, IN | |
| Thomas | 1890 | Umpire | NYSt | , | |||
| Arthur Thomas | thomas005art | 1890 | 5/1-7/21 | York Monarchs | Eastern Interstate League | York, PA | |
| Harry Thomas | thomas007har | 1890 | 4/30-6/1 | Mansfield | Tri-State League | Mansfield, OH | |
| Harry Thomas | thomas007har | 1890 | Elkhart | Indiana State League | Elkhart, IN | ||
| Harry Thomas | thomas007har | 1890 | 7/8 | Dayton Reds | Tri-State League | Dayton, OH | |
| Harry Thomas | thomas007har | 1890 | 7/16-7/18 | Troy | New York State League | Troy, NY | |
| Thompson | thomps120--- | 1890 | 6/13 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Andrew Thompson | thomps007and | 1890 | 4/17-6/20 | St. Paul Apostles | Western Association | St. Paul, MN | |
| J. Thompson | 1890 | +9/27+ | Pullman YMCA | Independent | Pullman, IL | ||
| Reddy Thompson | thomps000red | 1890 | 5/1-6/25 | Elkhart | Indiana State League | Elkhart, IN | |
| Sam Thompson | thomps002sam | 1890 | 132 g. | Philadelphia | National League | Philadelphia, PA | |
| John Thornton | thornt003joh | 1890 | 4/17-9/29 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| William Thornton | thornt002wil | 1890 | Lowell Matthews | Independent | Lowell, MA | ||
| Thorp | 1890 | +9/22+ | Canisteo | WNYSt | Canisteo, NY | ||
| Thorpe | thorpe004--- | 1890 | Marquette | UppPenin | Marquette, MI | ||
| Charles Thorpe | thorpe002cha | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| Charles Thorpe | thorpe002cha | 1890 | Lansing | Michigan State League | Lansing, MI | ||
| Thursby | thursb001--- | 1890 | 6/8-6/10 | Canton Nadjys | Tri-State League | Canton, OH | |
| Thurston | thurst004--- | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Frank Thyne | thyne-001fra | 1890 | no g. | McKeesport | Tri-State League | McKeesport, PA | |
| C.G. Thyng | thyng-000cg- | 1890 | 7/20-9/15 | Olean | New York-Pennsylvania League | Olean, NY | |
| Mike Tiernan | tierna001mik | 1890 | 133 g. | New York | National League | New York, NY | |
| Tierney | tierne002--- | 1890 | New York Hackett Carhart | Independent | New York, NY | ||
| G.A. Tilford | tilfor000ga- | 1890 | Port Jervis | Independent | Port Jervis, NY | ||
| G.A. Tilford | tilfor000ga- | 1890 | +6/18-9/2+ | Cobleskill | New York State League | Cobleskill, NY | |
| Charles Tindall | 1890 | 8/2 | MLB Umpire | National League | , | ||
| Charles Tindall | 1890 | +8/31+ | Umpire | ChicCity | , | ||
| Ledell Titcomb | titcom001can | 1890 | 5/1-7/5 | Toronto Canucks | International Association | Toronto, ON | |
| Ledell Titcomb | titcom001can | 1890 | -10/15 | 21 g. | Rochester | American Association | Rochester, NY |
| Tommy Titter | titter001tom | 1890 | Weir City | Independent | Weir City, KS | ||
| Tobias | tobias001--- | 1890 | 8/21 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| John Tobias | tobias002joh | 1890 | 3/30-6/1 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| Tobin | tobin-015--- | 1890 | 5/12-7/4 | Albany | New York State League | Albany, NY | |
| George Toffling | toffli001geo | 1890 | 6/25-6/27 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Phil Tomney | tomney001phi | 1890 | 108 g. | Louisville | American Association | Louisville, KY | |
| James Toohey | twohey001jam | 1890 | 5/2-6/21 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| James Toohey | twohey001jam | 1890 | 6/24-7/5 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| James Toohey | twohey001jam | 1890 | 7/14-9/30 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| John Toole | toole-001joh | 1890 | Umpire | NYSt | , | ||
| Steve Toole | toole-001ste | 1890 | -7/11 | 38 g. | MLB Umpire | American Association | , |
| Steve Toole | toole-001ste | 1890 | -8/9 | 6 g. | Brooklyn | American Association | Brooklyn, NY |
| Frank Torreyson | torrey001fra | 1890 | 5/9-5/26 | McKeesport | Tri-State League | McKeesport, PA | |
| Frank Torreyson | torrey001fra | 1890 | 7/26-? | Erie | New York-Pennsylvania League | Erie, PA | |
| Thayer Torreyson | torrey001tha | 1890 | 5/27-8/7 | McKeesport | Tri-State League | McKeesport, PA | |
| J. C. Totty | 1890 | Winchester | Independent | Winchester, VA | |||
| Towner | towner001--- | 1890 | 5/7 | Mansfield | Tri-State League | Mansfield, OH | |
| George Townsend | townse002geo | 1890 | 4/19-8/26 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| George Townsend | townse002geo | 1890 | 18 g. | Baltimore | American Association | Baltimore, MD | |
| Ike Toy | toy---001isa | 1890 | Camden | Independent | Camden, NJ | ||
| Jim Toy | toy---001jim | 1890 | -7/30 | 44 g. | Brooklyn | American Association | Brooklyn, NY |
| Bill Traffley | traffl001bil | 1890 | 4/17-8/10 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| Bill Traffley | traffl001bil | 1890 | 8/14-9/29 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| Grant Travis | travis001gra | 1890 | +5/23+ | Kokomo | Indiana State League | Kokomo, IN | |
| Jim Tray | tray--001jim | 1890 | Ishpeming | MiSt | Ishpeming, MI | ||
| J. Traynor | trayno011--- | 1890 | +8/31+ | Chicago Rivals | Chicago City League | Chicago, IL | |
| George Treadway | treadw001geo | 1890 | 4/17-8/14 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| George Treadway | treadw001geo | 1890 | +9/27+ | Pullman YMCA | Independent | Pullman, IL | |
| Mike Trost | trost-001mik | 1890 | 4/29-7/25 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Mike Trost | trost-001mik | 1890 | 7/30-8/17 | Peoria Canaries | Central Interstate League | Peoria, IL | |
| Mike Trost | trost-001mik | 1890 | 8/21- | 17 g. | St. Louis Browns | American Association | St. Louis, MO |
| Sam Trott | trott-001sam | 1890 | 4/19-9/30 | Newark Little Giants | Atlantic Association | Newark, NJ | |
| Dasher Troy | troy--001das | 1890 | New York Alaskas | Independent | New York, NY | ||
| Fred Truax | truax-001fre | 1890 | 8/18 | 1 g. | Pittsburgh | National League | Pittsburgh, PA |
| Harry Truby | truby-002har | 1890 | no g. | Austin Senators | Texas League | Austin, TX | |
| Harry Truby | truby-002har | 1890 | Ishpeming | UpperPenin | Ishpeming, MI | ||
| Lon True | true--001lon | 1890 | Webb City | Independent | Webb City, MO | ||
| Job Trusty | trusty001job | 1890 | 6/-10/ | Cuban Giants | Independent | Cuban, | |
| Job Trusty | trusty001job | 1890 | 8/28 | Lambertville | Independent | Lambertville, NJ | |
| Tommy Tucker | tucker003tho | 1890 | 132 g. | Boston | National League | Boston, MA | |
| Andrew Tully | tully-001and | 1890 | 5/1-8/15 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Andrew Tully | tully-001and | 1890 | -9/? | Dubuque | Illinois-Iowa League | Dubuque, IA | |
| Paddy Tuohy | toohey001jam | 1890 | 5/2-6/21 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Paddy Tuohy | toohey001jam | 1890 | 6/24-7/5 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |
| Paddy Tuohy | toohey001jam | 1890 | 7/14-9/30 | Minneapolis Millers | Western Association | Minneapolis, MN | |
| Jerry Turbidy | turbid001jer | 1890 | 6/21 | Worcester Grays | Atlantic Association | Worcester, MA | |
| Frank Turner | turner002the | 1890 | 4/19-7/18 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Thomas Turner | turner006tho | 1890 | 5/3-10/12 | Spokane | Pacific Northwest League | Spokane, WA | |
| Tuck Turner | turner002tuc | 1890 | Jersey City Jerseys | Independent | Jersey City, NJ | ||
| Tuck Turner | turner002tuc | 1890 | WN.Brig-Corinthian | Independent | , | ||
| Lee Tutt | tutt--001--- | 1890 | Helena | Independent | Helena, MT | ||
| Art Twineham | twineh002art | 1890 | 4/19-4/22 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Art Twineham | twineh002art | 1890 | 6/?- | Umpire | Il-Ia | , | |
| Art Twineham | twineh002art | 1890 | 6/27 exh. | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Larry Twitchell | twitch001lar | 1890 | 56 g. | Cleveland | Players League | Cleveland, OH | |
| Larry Twitchell | twitch001lar | 1890 | 44 g. | Buffalo | Players League | Buffalo, NY | |
| Fred Underwood | underw002fre | 1890 | 5/28-8/4 | Washington Senators | Atlantic Association | Washington, DC | |
| Fred Underwood | underw002fre | 1890 | 9/15-9/28 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Bill Urquhart | urquha001wil | 1890 | 4/27-7/21 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Bill Urquhart | urquha001wil | 1890 | 7/27-9/29 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Abram Valentine | 1890 | U. of Pennsylvania | College | , | |||
| Howard Vallee | vallee001how | 1890 | 5/1-7/21 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Howard Vallee | vallee001how | 1890 | 7/22-9/30 | Harrisburg Ponies | Atlantic Association | Harrisburg, PA | |
| Thomas Vallelly | vallel001tho | 1890 | 5/1-9/24+ | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Hobart Van Alstyne | vanals001hob | 1890 | 4/19-7/19 | Jersey City Jerseys | Atlantic Association | Jersey City, NJ | |
| Hobart Van Alstyne | vanals001hob | 1890 | +8/31-9/8+ | Troy | New York State League | Troy, NY | |
| Van Diver | vandiv002--- | 1890 | 4/29-5/4 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| George Van Dommelle | vandom001geo | 1890 | 4/30-6/26 | Akron Akrons | Tri-State League | Akron, OH | |
| Bill Van Dyke | vandyk001bil | 1890 | 4/17-10/13 | 129 g. | Toledo | American Association | Toledo, OH |
| George Van Haltren | vanhal001geo | 1890 | -3/ | San Francisco Pioneers | CaWinter | San Francisco, CA | |
| George Van Haltren | vanhal001geo | 1890 | Umpire | Calif | , | ||
| George Van Haltren | vanhal001geo | 1890 | 92 g. | Brooklyn | Players League | Brooklyn, NY | |
| Dick Van Zant | vanzan001dic | 1890 | 4/29-8/15 | Burlington Hawkeyes | Central Interstate League | Burlington, IA | |
| Dick Van Zant | vanzan001dic | 1890 | 8/23-10/12 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Charles Vance | vance-002cha | 1890 | 5/1- | Peru | Indiana State League | Peru, IN | |
| Otto Vander Broeck | vander001ott | 1890 | +5/14-5/27 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Otto Vander Broeck | vander001ott | 1890 | 6/6 | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Otto Vander Broeck | vander001ott | 1890 | 6/21 | Joliet | Illinois-Iowa League | Joliet, IL | |
| Otto Vander Broeck | vander001ott | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Farmer Vaughn | vaughn001far | 1890 | 44 g. | New York | Players League | New York, NY | |
| Peek-A-Boo Veach | veach-001pee | 1890 | -7/25 | 64 g. | Cleveland | National League | Cleveland, OH |
| Peek-A-Boo Veach | veach-001pee | 1890 | 8 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Peek-A-Boo Veach | veach-001pee | 1890 | 8/7-10/12 | San Francisco Haverlys | California League | San Francisco, CA | |
| Peek-A-Boo Veach | veach-001pee | 1890 | 11/16 | Oakland Colonels | California League | Oakland, CA | |
| Alex Viau | viau--001ale | 1890 | McKeesport | Tri-State League | McKeesport, PA | ||
| Lee Viau | viau--001lee | 1890 | 4/22-8/27 | 13 g. | Cincinnati | National League | Cincinnati, OH |
| Lee Viau | viau--001lee | 1890 | 13 g. | Cleveland | National League | Cleveland, OH | |
| Philip Viau | viau--001phi | 1890 | 4/19-6/1 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Philip Viau | viau--001phi | 1890 | 7/4-7/21 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Philip Viau | viau--001phi | 1890 | 8/4-8/15 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Philip Viau | viau--001phi | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Tom Vickery | vicker001tom | 1890 | 4/21- | 46 g. | Philadelphia | National League | Philadelphia, PA |
| Jake Virtue | virtue001jak | 1890 | 4/30-9/3 | Detroit Wolverines | International Association | Detroit, MI | |
| Jake Virtue | virtue001jak | 1890 | 7/21- | 62 g. | Cleveland | National League | Cleveland, OH |
| Joe Visner | visner001joe | 1890 | 130 g. | Pittsburgh | Players League | Pittsburgh, PA | |
| Vogel | vogel-004--- | 1890 | 6/1 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| Jake Vogel | vogel-001jak | 1890 | 4/29-5/16 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Peter J. Vogel | vogel-001jak | 1890 | 5/4-5/13 | Spokane | Pacific Northwest League | Spokane, WA | |
| Edward Vogt | vogt--001edw | 1890 | 5/25-9/28 | Stockton | California League | Stockton, CA | |
| Tony Von Fricken | vonfri001ton | 1890 | 5/9 | 1 g. | Boston | National League | Boston, MA |
| Voorhees | voorhe001--- | 1890 | 4/30-5/26 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Alex Voss | voss--001ale | 1890 | 4/30-5/8 | McKeesport | Tri-State League | McKeesport, PA | |
| Alex Voss | voss--001ale | 1890 | 5/22-5/30 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Jack Wadsworth | wadswo002jac | 1890 | 5/1- | 20 g. | Cleveland | National League | Cleveland, OH |
| Jack Wadsworth | wadswo002jac | 1890 | 8/23-9/13 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Woody Wagenhorst | wagenh001woo | 1890 | U. of Pennsylvania | College | , | ||
| Wagner | wagner061--- | 1890 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | ||
| Harry Wait | wait--001har | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| Charles Walker | 1890 | Webb City | Independent | Webb City, MO | |||
| Fleet Walker | walker001fle | 1890 | Terre Haute | Terre Haute, IN | |||
| George Walker | walker002geo | 1890 | Hamilton | Independent | Hamilton, ON | ||
| Harry Walker | walker001--- | 1890 | Evansville Hoosiers | Central Interstate League | Evansville, IN | ||
| Harry Walker | walker001--- | 1890 | Kokomo | Indiana State League | Kokomo, IN | ||
| Harry Walker | walker001--- | 1890 | Lansing | Michigan State League | Lansing, MI | ||
| Harry Walker | walker001--- | 1890 | Fort Wayne | Indiana State League | Fort Wayne, IN | ||
| Harry Walker | walker001--- | 1890 | 8/19-9/20 | Joliet | Illinois-Iowa League | Joliet, IL | |
| W. Walker | walker002w-- | 1890 | Anderson | Indiana State League | Anderson, IN | ||
| Wallace | wallac038--- | 1890 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | ||
| Joe Walsh | walsh-002joe | 1890 | 4/17-9/29 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Joe Walsh | 1890 | 5/10-6/10 | Port Huron | Michigan State League | Port Huron, MI | ||
| John Walsh | walsh-014joh | 1890 | 4/17-5/14 | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Des Moines, IA | |
| John Walsh | walsh-014joh | 1890 | 5/28-8/13 | Hartford | Atlantic Association | Hartford, CT | |
| John Walsh | walsh-014joh | 1890 | 8/22-9/29+ | Albany | New York State League | Albany, NY | |
| William Walsh | walsh-008wil | 1890 | 5/2-5/24 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Walters | walter002--- | 1890 | 11/15 | Oakland Colonels | California League | Oakland, CA | |
| Charles Walters | walter003cha | 1890 | Peru | Indiana State League | Peru, IN | ||
| Eddie Walton | walton001edd | 1890 | 5/2-6/24 | McKeesport | Tri-State League | McKeesport, PA | |
| Eddie Walton | walton001edd | 1890 | 7/16-7/19 | Canton Nadjys | Tri-State League | Canton, OH | |
| Thomas Walton | 1890 | Port Townsend | Port Townsend, | ||||
| Ward | ward--021--- | 1890 | 5/31 | Waco Babies | Texas League | Waco, TX | |
| James Ward | ward--008jam | 1890 | 5/17-8/7 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| James Ward | ward--008jam | 1890 | Fresno | Independent | Fresno, CA | ||
| James Ward | ward--008jam | 1890 | 9/26-10/17 | Sacramento Senators | California League | Sacramento, CA | |
| James Ward | ward--008jam | 1890 | 10/25-11/2 | San Francisco Haverlys | California League | San Francisco, CA | |
| James Ward | ward--008jam | 1890 | 11/13 | Sacramento Senators | California League | Sacramento, CA | |
| John Ward | ward--002mon | 1890 | 128 g. | Brooklyn | Players League | Brooklyn, NY | |
| Piggy Ward | ward--002fra | 1890 | 3/30-6/7 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| Piggy Ward | ward--002fra | 1890 | 6/21-10/12 | Spokane | Pacific Northwest League | Spokane, WA | |
| Ed Ware | 1890 | InSt | , | ||||
| Thomas Warthman | warthm001tho | 1890 | 4/29-5/18 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| Watkins | watkin017--- | 1890 | +5/15-6/7+ | Utica | New York State League | Utica, NY | |
| Bill Watkins | watkin002bil | 1890 | 7/18-8/18 | St. Paul Apostles | Western Association | St. Paul, MN | |
| J.W. Watkins | watkin001j-- | 1890 | Quincy Ravens | Central Interstate League | Quincy, IL | ||
| Robert Watson | 1890 | 4/30-6/18 | Springfield | Tri-State League | Springfield, OH | ||
| Farmer Weaver | weaver001far | 1890 | 130 g. | Louisville | American Association | Louisville, KY | |
| Webber | webber009--- | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| Webber | webber008--- | 1890 | Port Huron | Michigan State League | Port Huron, MI | ||
| Harry Webber | webber002har | 1890 | 5/2-5/15 | Ottumwa | Illinois-Iowa League | Ottumwa, IA | |
| Peter Webber | webber002pet | 1890 | 5/1-5/21 | Terre Haute | Central Interstate League | Terre Haute, IN | |
| Joe Weber | weber-002jos | 1890 | Flint Flyers | Michigan State League | Flint, MI | ||
| Pete Weckbecker | weckbe001pet | 1890 | -10/12 | 32 g. | Louisville | American Association | Louisville, KY |
| Al Weddige | weddig001alb | 1890 | 4/29-6/1 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Al Weddige | weddig001alb | 1890 | 8/1-8/22 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | |
| William Wehrle | wehrle002wil | 1890 | 4/19-6/1 | Fort Worth Panthers | Texas League | Fort Worth, TX | |
| William Wehrle | wehrle002wil | 1890 | 6/18-8/25 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| Charles Weidensaul | weiden002cha | 1890 | Mount Carmel | Independent | Mount Carmel, PA | ||
| Harry Weidensaul | weiden001har | 1890 | Mount Carmel | Independent | Mount Carmel, PA | ||
| Jake Weihl | weihl-001jak | 1890 | 4/29-6/1 | Galesburg/Indianapolis | Central Interstate League | Galesburg, IL | |
| Jake Weihl | weihl-001jak | 1890 | 6/3-7/8 | Galesburg/Indianapolis | Central Interstate League | Indianapolis, IN | |
| Jake Weihl | weihl-001jak | 1890 | Joliet | Illinois-Iowa League | Joliet, IL | ||
| Frank Weikart | weiker001fra | 1890 | 4/14-6/4 | Houston Mud Cats | Texas League | Houston, TX | |
| Frank Weikart | weiker001fra | 1890 | 6 g. | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| Frank Weikart | weiker001fra | 1890 | Parsons | Parsons, KS | |||
| Hugh Weir | weir--001hug | 1890 | 5/1-5/20 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay, MI | |
| Hugh Weir | weir--001hug | 1890 | +6/20-7/18+ | Utica | New York State League | Utica, NY | |
| Welch | welch-013--- | 1890 | 5/1- | Joliet | Illinois-Iowa League | Joliet, IL | |
| Curt Welch | welch-001cur | 1890 | 103 g. | Philadelphia | American Association | Philadelphia, PA | |
| Curt Welch | welch-001cur | 1890 | 19 g. | Baltimore | American Association | Baltimore, MD | |
| Mickey Welch | welch-003mic | 1890 | 37 g. | New York | National League | New York, NY | |
| Patrick Welch | welch-003pat | 1890 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | ||
| Thomas Welch | welch-002tho | 1890 | +5/14-8/26 | Troy | New York State League | Troy, NY | |
| Tub Welch | welch-001tub | 1890 | 3/30-6/6 | Dallas Hams | Texas League | Dallas, TX | |
| Tub Welch | welch-001tub | 1890 | 6/12 - | 35 g. | Toledo | American Association | Toledo, OH |
| Frank Wells | wells-002fra | 1890 | 6/17-8/8 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| Frank Wells | wells-002fra | 1890 | Ogdensburg | Independent | Ogdensburg, NY | ||
| Jake Wells | wells-001jak | 1890 | 5/1-6/21 | Detroit Wolverines | International Association | Detroit, MI | |
| Jake Wells | wells-001jak | 1890 | -8/19 | 30 g. | St. Louis Browns | American Association | St. Louis, MO |
| Patrick Welsh | welsh-001pat | 1890 | 4/17-9/29 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| Jack Wente | wente-001jac | 1890 | 5/12-8/12 | Oneonta | New York State League | Oneonta, NY | |
| Jack Wentz | wentz-001jac | 1890 | 3/30-6/7 | Houston Mud Cats | Texas League | Houston, TX | |
| Jack Wentz | wentz-001jac | 1890 | 6/26-8/4 | Washington Senators | Atlantic Association | Washington, DC | |
| Perry Werden | werden001per | 1890 | 128 g. | Toledo | American Association | Toledo, OH | |
| Joe Werrick | werric001joe | 1890 | 4/19-8/6 | Baltimore Orioles | Atlantic Association | Baltimore, MD | |
| Joe Werrick | werric001joe | 1890 | 8/22-9/29 | St. Paul Apostles | Western Association | St. Paul, MN | |
| Buck West | west--001buc | 1890 | -4/28 | 37 g. | Cleveland | National League | Cleveland, OH |
| Buck West | west--001buc | 1890 | 5/1-7/5 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay, MI | |
| Westhoven | westho001--- | 1890 | 6/3-6/17 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Bob Westlake | westla001rob | 1890 | 4/19-9/14 | Milwaukee Brewers/Creams | Western Association | Milwaukee, WI | |
| George Westlake | westla002geo | 1890 | Manistee | Michigan State League | Manistee, MI | ||
| George Westlake | westla002geo | 1890 | 6/25-8/3 | Canton Nadjys | Tri-State League | Canton, OH | |
| George Westlake | westla002geo | 1890 | 8/8-8/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| George Westlake | westla002geo | 1890 | 8/12? | Lincoln Rustlers/Des Moines Prohibitionist | Western Association | Lincoln, NE | |
| George Westlake | westla002geo | 1890 | 8/13-9/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| William Wetzel | wetzel002wil | 1890 | 24 g. | Olean | New York-Pennsylvania League | Olean, NY | |
| William Wetzel | wetzel002wil | 1890 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | ||
| Gus Weyhing | weyhin001aug | 1890 | 49 g. | Brooklyn | Players League | Brooklyn, NY | |
| Whalen | whalen014--- | 1890 | -7/? | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Whalen | whalen014--- | 1890 | Newaunco | Independent | Newaunco, MI | ||
| John Whalen | whalen003joh | 1890 | Grand Rapids | Michigan State League | Grand Rapids, MI | ||
| John Whalen | whalen003joh | 1890 | 6/13-7/5 | Grand Rapids Shamrocks | International Association | Grand Rapids, MI | |
| Wheaton | wheato001--- | 1890 | Muskegon | Michigan State League | Muskegon, MI | ||
| Fred Wheeler | wheele001fre | 1890 | -6/ | Fort Wayne | Indiana State League | Fort Wayne, IN | |
| Bobby Wheelock | wheelo001bob | 1890 | 5/1-7/7 | Detroit Wolverines | International Association | Detroit, MI | |
| Bobby Wheelock | wheelo001bob | 1890 | -9/27 | 52 g. | Columbus | American Association | Columbus, OH |
| George Whinnery | whinne001geo | 1890 | 4/30-8/3 | Akron Akrons | Tri-State League | Akron, OH | |
| George Whinnery | whinne001geo | 1890 | Ashland | Independent | Ashland, OH | ||
| Lew Whistler | whistl002lew | 1890 | 4/19-8/4 | Washington Senators | Atlantic Association | Washington, DC | |
| Lew Whistler | whistl002lew | 1890 | 8/7 - | 45 g. | New York | National League | New York, NY |
| Pat Whitaker | whitak001pat | 1890 | 4/6-6/6 | Waco Babies | Texas League | Waco, TX | |
| Pat Whitaker | whitak001pat | 1890 | 6/21-10/12 | Portland | Pacific Northwest League | Portland, OR | |
| White | white-123--- | 1890 | 5/1-5/16 | Elkhart | Indiana State League | Elkhart, IN | |
| Bill White | white-003bil | 1890 | 4/17-8/14 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Bob White | white-002bob | 1890 | Elkhart | Indiana State League | Elkhart, IN | ||
| Bob White | white-002bob | 1890 | Louisville Deppens | Independent | Louisville, KY | ||
| Bob White | white-002bob | 1890 | 5/1-6/14+ | Bluffton | Indiana State League | Bluffton, IN | |
| Bob White | white-002bob | 1890 | Muncie | Indiana State League | Muncie, IN | ||
| Deacon White | white-002dea | 1890 | 122 g. | Buffalo | Players League | Buffalo, NY | |
| Joe White | white-002joe | 1890 | 4/30-6/11 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Joe White | white-002joe | 1890 | 7/11-7/29 | McKeesport | Tri-State League | McKeesport, PA | |
| Sol White | white-001kin | 1890 | 5/1-7/21 | York Monarchs | Eastern Interstate League | York, PA | |
| Milt Whitehead | whiteh001mil | 1890 | 4/17-9/29 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Guerdon Whiteley | whitel001gue | 1890 | 5/3-9/27 | Seattle | Pacific Northwest League | Seattle, WA | |
| E. S. Whiting | 1890 | Waterbury | Independent | Waterbury, CT | |||
| E. S. Whiting | 1890 | Camden | Independent | Camden, NJ | |||
| Ed Whiting | whitin001ed- | 1890 | Ogdensburg | Independent | Ogdensburg, NY | ||
| Hobe Whiting | whitin001hob | 1890 | +5/29-7/23+ | Troy | New York State League | Troy, NY | |
| Hobe Whiting | whitin001hob | 1890 | Hoosic Falls | AlbRen | Hoosic Falls, NY | ||
| Art Whitney | whitne002art | 1890 | 119 g. | New York | Players League | New York, NY | |
| Jim Whitney | whitne001jim | 1890 | -7/16 | 7 g. | Philadelphia | American Association | Philadelphia, PA |
| Billy Whyte | whyte-000bil | 1890 | 5/1-7/21 | York Monarchs | Eastern Interstate League | York, PA | |
| Widner | widner001--- | 1890 | 5/?- | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | |
| Wild Bill Widner | widner001wil | 1890 | 13 g. | Columbus | American Association | Columbus, OH | |
| Wild Bill Widner | widner001wil | 1890 | 7/22-9/30 | Sioux City Corn Huskers | Western Association | Sioux City, IA | |
| Andrew Wiedman | weidma002and | 1890 | +5/19-7/12+ | Olean | New York-Pennsylvania League | Olean, NY | |
| Andrew Wiedman | weidma001and | 1890 | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | ||
| George Wilbur | wilbur002geo | 1890 | Ishpeming | UppPenin | Ishpeming, MI | ||
| Ace Wilder | wilder001al- | 1890 | Marquette | UppPenin | Marquette, MI | ||
| Horace Wilds | wilds-001hor | 1890 | 10/19 | Stockton | California League | Stockton, CA | |
| W. W. Wilkinson | 1890 | Aberdeen Nonpareil | Independent | Aberdeen, SD | |||
| Charles Williams | willia015cha | 1890 | 4/30-7/8 | Dayton Reds | Tri-State League | Dayton, OH | |
| Charles Williams | willia015cha | 1890 | 7/21-9/9 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Clarence Williams | willia010cla | 1890 | 5/1-7/21 | Harrisburg Ponies | Eastern Interstate League | Harrisburg, PA | |
| Edward Williams | willia013edw | 1890 | 4/19-8/26 | Wilmington Blue Hens | Atlantic Association | Wilmington, DE | |
| George Williams | willia008geo | 1890 | 5/1-7/14 | York Monarchs | Eastern Interstate League | York, PA | |
| Gus Williams | willia002gus | 1890 | 4/18-4/22 | 2 g. | Brooklyn | American Association | Brooklyn, NY |
| Owen Williams | willia001owe | 1890 | 7/19-8/9 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| Tom Williams | willia004tom | 1890 | 4/30-6/8 | Canton Nadjys | Tri-State League | Canton, OH | |
| Tom Williams | willia004tom | 1890 | 6/19-6/29 | Springfield | Tri-State League | Springfield, OH | |
| Ed Williamson | willia001ned | 1890 | 73 g. | Chicago | Players League | Chicago, IL | |
| Willis | willis004--- | 1890 | 6/25 | Lancaster/Allentown | Eastern Interstate League | Allentown, PA | |
| Charles Willis | willis005cha | 1890 | 4/19-9/29 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| William Wilmington | wilmin001wil | 1890 | +5/22-6/3 | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| William Wilmington | wilmin001wil | 1890 | 6/16-7/22 | Meadville | New York-Pennsylvania League | Meadville, PA | |
| Walt Wilmot | wilmot001wal | 1890 | 139 g. | Chicago | National League | Chicago, IL | |
| Wilson | wilson057--- | 1890 | 7/4 | Springfield | Tri-State League | Springfield, OH | |
| Bert Wilson | wilson004ber | 1890 | 5/3-6/18 | Dayton Reds | Tri-State League | Dayton, OH | |
| Bert Wilson | wilson004ber | 1890 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | ||
| Bill Wilson | wilson003bil | 1890 | 4/30 - | 83 g. | Pittsburgh | National League | Pittsburgh, PA |
| Frank Wilson | wilson006fra | 1890 | 7/23-9/11+ | Albany | New York State League | Albany, NY | |
| George Wilson | wilson016geo | 1890 | 5/2-8/29 | Aurora | Illinois-Iowa League | Aurora, IL | |
| George Wilson | wilson017geo | 1890 | 5/14-6/4 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| George Wilson | 1890 | Jersey City | Independent | Jersey City, NJ | |||
| Jack Wilson | wilson007jac | 1890 | 4/10-11/23 | Stockton | California League | Stockton, CA | |
| Parke Wilson | wilson001par | 1890 | 4/18-9/29 | Denver Grizzlies/Mountaineers | Western Association | Denver, CO | |
| Tug Wilson | wilson001tug | 1890 | 4/19-6/7 | Worcester Grays | Atlantic Association | Worcester, MA | |
| William Wilson | wilson038wil | 1890 | Kokomo | Indiana State League | Kokomo, IN | ||
| George Winkelman | winkel001geo | 1890 | 4/19-6/11 | Hartford | Atlantic Association | Hartford, CT | |
| George Winkelman | winkel001geo | 1890 | 9/9-9/30 | Lebanon | Atlantic Association | Lebanon, PA | |
| C. Winters | winter002c-- | 1890 | 7/7-7/10 | Canton Nadjys | Tri-State League | Canton, OH | |
| C. Winters | winter002c-- | 1890 | 7/25-7/26 | McKeesport | Tri-State League | McKeesport, PA | |
| Charles Wirsche | wirsch001cha | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Sterling, IL | ||
| Charles Wirsche | wirsch001cha | 1890 | Sterling/Galesburg/Burlington | Illinois-Iowa League | Galesburg, IL | ||
| Charles Wirsche | wirsch001cha | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| Wise | wise--001--- | 1890 | 5/2 | Washington Senators | Atlantic Association | Washington, DC | |
| Sam Wise | wise--001sam | 1890 | 119 g. | Buffalo | Players League | Buffalo, NY | |
| Ed Wiswell | wiswel001ed- | 1890 | +5/13-6/19+ | Anderson | Indiana State League | Anderson, IN | |
| Bill Wittrock | whitro001bil | 1890 | 5/3 - | 16 g. | St. Louis Browns | American Association | St. Louis, MO |
| Bill Wittrock | whitro001bil | 1890 | 8/7-9/27 | Seattle | Pacific Northwest League | Seattle, WA | |
| Bill Wittrock | whitro001bil | 1890 | Portland | Pacific Northwest League | Portland, OR | ||
| Chicken Wolf | wolf--001chi | 1890 | 134 g. | Louisville | American Association | Louisville, KY | |
| Frank Wolf | wolf--001fra | 1890 | Dubuque | Illinois-Iowa League | Dubuque, IA | ||
| DeLoss Wood | wood--002del | 1890 | Aurora | Illinois-Iowa League | Aurora, IL | ||
| DeLoss Wood | wood--002del | 1890 | +9/5-9/23+ | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| George Wood | wood--004geo | 1890 | 132 g. | Philadelphia | Players League | Philadelphia, PA | |
| Pete Wood | wood--001pet | 1890 | 5/1-7/5 | Toronto Canucks | International Association | Toronto, ON | |
| Pete Wood | wood--001pet | 1890 | Dundas | Independent | Dundas, ON | ||
| Fred Woodcock | woodco001fre | 1890-91 | Brown Univ. | College | , | ||
| F. G. Woods | 1890 | Hamilton Hams/Montreal | International Association | Hamilton, ON | |||
| Harry Woodward | woodwa000har | 1890 | +6/3-7/12+ | Dunkirk | New York-Pennsylvania League | Dunkirk, NY | |
| William Work | works-001wil | 1890 | 3/30-6/7 | Galveston Sand Crabs | Texas League | Galveston, TX | |
| William Work | works-001wil | 1890 | 6/25-8/17 | Quincy Ravens | Central Interstate League | Quincy, IL | |
| William Work | works-001wil | 1890 | 9/17-9/29 | Omaha Omahogs/Lambs | Western Association | Omaha, NE | |
| Harry Wright | wright004har | 1890 | Philadelphia | National League | Philadelphia, PA | ||
| Joe Wright | wright001joe | 1890 | 5/1- | Ottawa | Illinois-Iowa League | Ottawa, IL | |
| Pat Wright | wright003pat | 1890 | 5/2-7/7 | London Tecumsehs | International Association | London, ON | |
| Pat Wright | wright003pat | 1890 | 7/11 | 1 g. | Chicago | National League | Chicago, IL |
| Pat Wright | wright003pat | 1890 | 7/26-8/15 | Evansville Hoosiers | Central Interstate League | Evansville, IN | |
| Pat Wright | wright003pat | 1890 | 8/23-10/12 | Tacoma | Pacific Northwest League | Tacoma, WA | |
| Rasty Wright | wright001ras | 1890 | 4/17 - | 88 g. | Syracuse | American Association | Syracuse, NY |
| Rasty Wright | wright001ras | 1890 | 8/23-9/15 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Rasty Wright | wright001ras | 1890 | -10/4 | 13 g. | Cleveland | National League | Cleveland, OH |
| Henry Yaik | yaik--001hen | 1890 | 4/30-7/27 | Canton Nadjys | Tri-State League | Canton, OH | |
| George Yapp | yapp--000geo | 1890 | 5/- | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Joe Yetzer | yetzer001--- | 1890 | +6/8+ | Reading Actives | Independent | Reading, PA | |
| Billy York | york--001wil | 1890 | -9/23 | Cedar Rapids | Illinois-Iowa League | Cedar Rapids, IA | |
| Tom York | york--001tom | 1890 | Albany | New York State League | Albany, NY | ||
| Young | young-066--- | 1890 | 5/2-5/8 | Easton | Eastern Interstate League | Easton, PA | |
| Young | young-073--- | 1890 | 6/19 | Hartford | Atlantic Association | Hartford, CT | |
| Ben Young | young-002ben | 1890 | -8/ | Umpire | PacNW | , | |
| Cy Young | young-001den | 1890 | 4/30-7/25 | Canton Nadjys | Tri-State League | Canton, OH | |
| Cy Young | young-001den | 1890 | 8/6- | 17 g. | Cleveland | National League | Cleveland, OH |
| Joseph Young | 1890 | 9/2 | MLB Umpire | American Association | , | ||
| Otto Young | young-002ott | 1890 | 3/23-8/17 | San Francisco Haverlys | California League | San Francisco, CA | |
| Otto Young | young-002ott | 1890 | 8/24-9/10 | Stockton | California League | Stockton, CA | |
| W. Young | young-002w-- | 1890 | 4/30-5/2 | Youngstown Giants | Tri-State League | Youngstown, OH | |
| Henry Youngman | youngm001hen | 1890 | 4/19-5/23 | 13 g. | Pittsburgh | National League | Pittsburgh, PA |
| Henry Youngman | youngm001hen | 1890 | 6/16 | McKeesport | Tri-State League | McKeesport, PA | |
| Henry Youngman | youngm001hen | 1890 | +6/19-9/15 | Bradford | New York-Pennsylvania League | Bradford, PA | |
| Thomas Zacharias | 1890 | 4/19-6/28 | MLB Umpire | National League | , | ||
| William Zecher | zecher001wil | 1890 | 5/1-7/2 | Altoona Mountaineers | Eastern Interstate League | Altoona, PA | |
| William Zecher | zecher001wil | 1890 | 8/3 | Canton Nadjys | Tri-State League | Canton, OH | |
| Harry Zell | zell--001har | 1890 | 5/1-7/4 | Saginaw-Bay City Hyphens | International Association | Saginaw-Bay City, MI | |
| Harry Zell | zell--001har | 1890 | 7/16-8/14+ | Jamestown | New York-Pennsylvania League | Jamestown, NY | |
| George Ziegler | ziegle001geo | 1890 | 3/23-6/1 | Sacramento Senators | California League | Sacramento, CA | |
| George Ziegler | ziegle001geo | 1890 | 6/19 | 1 g. | Pittsburgh | National League | Pittsburgh, PA |
| George Ziegler | ziegle001geo | 1890 | 6/28-7/29 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| George Ziegler | ziegle002geo | 1890 | 4/30-8/4 | Wheeling National Citys/Nailers | Tri-State League | Wheeling, WV | |
| George Ziegler | ziegle002geo | 1890 | Chicago Franklins | Chicago City League | Chicago, IL | ||
| Bill Zies | zies--001bil | 1890 | 5/1-9/24 | Monmouth | Illinois-Iowa League | Monmouth, IL | |
| Charles Zimmer | zimmer001cha | 1890 | 125 g. | Cleveland | National League | Cleveland, OH | |
| Matthew Zimmer | zimmer001mat | 1890 | 4/18-4/22 | Kansas City Blues | Western Association | Kansas City, MO | |
| Matthew Zimmer | zimmer001mat | 1890 | 5/17-10/12 | Seattle | Pacific Northwest League | Seattle, WA | |
| Frank Zinn | zinn--001fra | 1890 | +4/5+ | Manayunk Highland | Independent | Manayunk, |