exactmatch =
Year =
League =
Club =
There are 3724 matches found
| Name | BBrefID | Year | Span | Games | Team | League | Location |
| Ed Abbaticchio | abbati001edw | 1899 | 4/28-9/11 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Bert Abbey | abbey-001ber | 1899 | 5/2-6/12 | Montreal Royals | Eastern League | Montreal, QC | |
| Fred Abbott | abbott002har | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| Jack Abbott | abbott001jac | 1899 | 5/10-5/12 | Manchester Manchesters | New England League | Manchester, NH | |
| Victor Accorsini | accors001vic | 1899 | Waverly NY | Independent | Waverly, NY | ||
| Adams | adams-061--- | 1899 | 27 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Adams | adams-038--- | 1899 | 7/27 | Newport Colts | New England League | Newport, RI | |
| Jim Adams | adams-001jim | 1899 | 5/1 | Springfield Ponies | Eastern League | Springfield, MA | |
| Jim Adams | adams-001jim | 1899 | 5/10-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| Jim Adams | adams-001jim | 1899 | 5/24-5/30 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| Merle Adkins | adkins001mer | 1899 | Beliot College | College | , | ||
| Merle Adkins | adkins001mer | 1899 | no g. | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Dad Ahorn | ahorn-001a-- | 1899 | 5/12- | Manchester Manchesters | New England League | Manchester, NH | |
| Dad Ahorn | ahorn-001a-- | 1899 | -7/13 | Taunton Herrings | New England League | Taunton, MA | |
| Dad Ahorn | ahorn-001a-- | 1899 | Ilion | Independent | Ilion, NY | ||
| Tom Albright | albrig001tom | 1899 | 1 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Doc Aldinger | alding001alb | 1899 | U. of Vermont | College | , | ||
| Doc Aldinger | alding001alb | 1899 | 6/3-7/18 | Albany Senators | New York State League | Albany, NY | |
| Doc Aldinger | alding001alb | 1899 | 7/28-9/9 | Oswego Grays | New York State League | Oswego, NY | |
| Bill Alexander | alexan005wil | 1899 | 4/13-6/3 | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Bill Alexander | alexan005wil | 1899 | 6/6-7/5 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Allen | allen-081--- | 1899 | 1 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Bob Allen | allen-001bob | 1899 | 4/29-9/11 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| George Allen | allen-003geo | 1899 | 5/3-5/23 | Scranton Miners | Atlantic League | Scranton, PA | |
| George Allen | allen-003geo | 1899 | 6/3-7/15 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| George Allen | allen-003geo | 1899 | 7/18 | Oswego Grays | New York State League | Oswego, NY | |
| George Allen | allen-003geo | 1899 | 7/30-8/7 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Murray Allen | allen-000mur | 1899 | Trinity Col. (Duke) | College | , | ||
| Arthur Alloway | allowa001art | 1899 | 4/28-9/10 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Almgren | almgre000--- | 1899 | 1 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Nick Altrock | altroc001nic | 1899 | 5/11-7/1 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Nick Altrock | altroc001nic | 1899 | 7/15-9/9 | Oswego Grays | New York State League | Oswego, NY | |
| Ed Ames | ames--001edw | 1899 | 4/27-7/8 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Ed Ames | ames--001edw | 1899 | 7/12-8/4 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Doc Amole | amole-001doc | 1899 | 5/1-9/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Andy Anderson | anders003and | 1899 | 51 g. | San Jose Brewers | California League | San Jose, CA | |
| Andy Anderson | anders003art | 1899 | Ashtabula | Independent | Ashtabula, OH | ||
| George Anderson | anders008geo | 1899 | Muncie/Crawford | Indiana-Illinois League | Muncie, IN | ||
| John Anderson | anders010joh | 1899 | 117 g. | Brooklyn | National League | Brooklyn, NY | |
| Spike Anderson | anders003a-- | 1899 | Minne.-Comets | Independent | Minneapolis, MN | ||
| Andrews | andrew005--- | 1899 | 6/25 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Doc Andrews | andrew001jay | 1899 | 4/28-8/12 | Minneapolis Millers | Western League | Minneapolis, MN | |
| George Andrews | andrew005geo | 1899 | 27 g. | San Jose Brewers | California League | San Jose, CA | |
| George Andrews | andrew005geo | 1899 | 21 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| George Andrews | andrew006geo | 1899 | 5/7-5/9 | Detroit Tigers | Western League | Detroit, MI | |
| George Andrews | andrew006geo | 1899 | 16 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Abe Arellanes | arella001abe | 1899 | 37 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Abe Arellanes | arella001abe | 1899 | 1 g. | San Francisco A's | California League | San Francisco, CA | |
| Abe Arellanes | arella001abe | 1899 | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | ||
| Bill Armour | armour001wil | 1899 | 8/25- | Dayton Veterans | Interstate League | Dayton, OH | |
| Armstrong | armstr006--- | 1899 | 7/24-7/26 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Frank Armstrong | armstr001fra | 1899 | 5/10-6/20 | Newport Colts | New England League | Newport, RI | |
| William Armstrong | armstr001wil | 1899 | 19 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| Harry Arndt | arndt-001har | 1899 | South Bend Greens | Independent | South Bend, IN | ||
| Ed Arthur | arthur002sta | 1899 | 4/30-9/17 | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Steve Ashe | ashe--001ste | 1899 | 5/17-9/16 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Ed Ashenbach | ashenb001edw | 1899 | 29 g. | New Castle Quakers | Interstate League | New Castle, PA | |
| Ed Ashenbach | ashenb001edw | 1899 | 6/7-8/7 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Henry Ashford | ashfor001hen | 1899 | Vanderbilt Col. | College | , | ||
| George Ashton | ashton001geo | 1899 | +5/20-5/23+ | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Ernest Atchison | atchis000ern | 1899 | WashDC-Zephers | Independent | Washington, DC | ||
| Charlie Atherton | athert001cha | 1899 | 4/27-5/27 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Charlie Atherton | athert001cha | 1899 | 5/30-8/22 | 65 g. | Washington | National League | Washington, DC |
| Charlie Atherton | athert001cha | 1899 | 8/26-9/11 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Charlie Babb | babb--001cha | 1899 | 4/27- | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Charlie Babb | babb--001cha | 1899 | -6/ | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Charlie Babb | babb--001cha | 1899 | 124 g. | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| George Babbitt | babbit002geo | 1899 | 62 g. | London Cockneys | Canadian League | London, ON | |
| George Babbitt | babbit002geo | 1899 | 2 g. | San Jose Brewers | California League | San Jose, CA | |
| George Babbitt | babbit002geo | 1899 | 27 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Eddie Bach | 1899 | no g. | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | ||
| Harry Bacon | bacon-001har | 1899 | Bowdoin College | College | , | ||
| Louis Bacon | bacon-001jam | 1899 | 5/12-9/9 | Binghamton Bingos | New York State League | Binghamton, NY | |
| W.H. Bacon | bacon-000wh- | 1899 | +6/12+ | Brown University | College | , | |
| Frank Badger | badger001fra | 1899 | 41 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| Frank Badger | badger001fra | 1899 | 6/4-7/5 | Houston Buffaloes | Texas Association | Houston, TX | |
| Will Baer | baer--001wil | 1899 | 35 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Will Baer | baer--001wil | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | ||
| Will Baer | baer--001wil | 1899 | Peoria YMCA | Semi-Pro | Peoria, IL | ||
| Jose Baeza | baeza-000jos | 1899 | Cuba | Cuban | Cuba, | ||
| Jack Bagley | bagley001joh | 1899 | Villanova Col. | College | , | ||
| Jack Bagley | bagley001joh | 1899 | +7/1-7/15 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Jack Bagley | bagley001joh | 1899 | 7/20-9/4 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Jack Bagley | bagley001joh | 1899 | +9/14-9/16 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Bailey | bailey025--- | 1899 | St. Paul Apostles/Saints | Western League | St. Paul, MN | ||
| Charles Bailey | bailey004cha | 1899 | 6 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Charles Bailey | bailey004cha | 1899 | 6/18-6/21 | Dayton Veterans | Interstate League | Dayton, OH | |
| Charles Bailey | bailey004cha | 1899 | 6/27-7/18 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Charles Bailey | bailey004cha | 1899 | 7/20-7/30 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Charles Bailey | bailey004cha | 1899 | 7/31-8/17 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Harvey Bailey | bailey003har | 1899 | 6/30- | 12 g. | Boston | National League | Boston, MA |
| J.W. Bailey | bailey002j-- | 1899 | 33 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| King Bailey | bailey001kin | 1899 | 35 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| King Bailey | bailey001kin | 1899 | Montgomery Senators/Dallas Scrappers | Southern League | Dallas, TX | ||
| Bock Baker | baker-002cha | 1899 | -7/ | 18 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON |
| Bock Baker | baker-002cha | 1899 | 7/22-9/8 | Buffalo Bisons | Western League | Buffalo, NY | |
| Kirtley Baker | baker-001kir | 1899 | 4/17-6/14 | 12 g. | Washington | National League | Washington, DC |
| Kirtley Baker | baker-001kir | 1899 | 7/6-9/9 | Springfield Ponies | Eastern League | Springfield, MA | |
| Bald/Ball | ball--013--- | 1899 | 6/26-7/10 | Taunton Herrings | New England League | Taunton, MA | |
| Bald/Ball | ball--013--- | 1899 | 8/11-8/12 | Portland Phenoms | New England League | Portland, ME | |
| Mark Baldwin | baldwi001mar | 1899 | , | ||||
| Art Ball | ball--003art | 1899 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | ||
| Art Ball | ball--003art | 1899 | 31 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Art Ball | ball--003art | 1899 | 7/6-8/6 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Jim Ballantyne | ballen001jam | 1899 | Mobile Blackbirds | Southern League | Mobile, AL | ||
| Louis Balsz | balsz-002lou | 1899 | 32 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Louis Balsz | balsz-002lou | 1899 | Lincoln NB? | Independent | Lincoln, NE | ||
| Joseph Bammert | bammer001joh | 1899 | 39 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| Joseph Bammert | bammer001joh | 1899 | 6/17-6/20 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Joseph Bammert | bammer001joh | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | ||
| Oscar Bandelin | bandel002osc | 1899 | 5/1-7/9 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Bannon | bannon005--- | 1899 | 5/13 | Pawtucket Colts | New England League | Pawtucket, RI | |
| George Bannon | bannon001geo | 1899 | 4/29-8/6 | Montreal Royals | Eastern League | Montreal, QC | |
| George Bannon | bannon001geo | 1899 | 8/18-8/19 | Manchester Manchesters | New England League | Manchester, NH | |
| Jimmy Bannon | bannon001jam | 1899 | 4/28-9/10 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Tom Bannon | bannon001tho | 1899 | 4/29-9/10 | Montreal Royals | Eastern League | Montreal, QC | |
| Billy Barber | barber001wil | 1899 | 5/5-5/9 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Billy Barber | barber001wil | 1899 | 5 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Billy Barber | barber001wil | 1899 | Hastings | Independent | Hastings, MI | ||
| Billy Barber | barber001wil | 1899 | 11 g. | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Billy Barber | barber001wil | 1899 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | ||
| Billy Barber | barber001wil | 1899 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | ||
| Dave Barber | barber001dav | 1899 | 5/14-9/9 | Oswego Grays | New York State League | Oswego, NY | |
| Frank Barber | barber001fra | 1899 | 12 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Frank Barber | barber001fra | 1899 | Quincy/Dubuque | Western Association | Dubuque, IA | ||
| George Barclay | barcla001geo | 1899 | 5/4-9/9 | Rochester Bronchos | Eastern League | Rochester, NY | |
| John Barclay | barcla001joh | 1899 | 5/3-9/20 | New Castle Quakers | Interstate League | New Castle, PA | |
| Sandy Barclay | barcla001san | 1899 | 28 g. | San Diego Fullers | Southern California League | San Diego, CA | |
| Barnes | barnes021--- | 1899 | 4/23-5/13 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Fred Barnes | barnes001fre | 1899 | 4/28-9/11 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Billy Barnie | barnie001bil | 1899 | 4/28-9/10 | Hartford Indians | Eastern League | Hartford, CT | |
| Jimmy Barrett | barret003jam | 1899 | 4/27-9/11 | Detroit Tigers | Western League | Detroit, MI | |
| Jimmy Barrett | barret003jam | 1899 | 9/13- | 26 g. | Cincinnati | National League | Cincinnati, OH |
| Robert Barrett | barret004rob | 1899 | 9/3-9/4 | Detroit Tigers | Western League | Detroit, MI | |
| Barris | barris000--- | 1899 | 11 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Ed Barrow | barrow001edw | 1899 | -8/6 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Ed Barrow | barrow001edw | 1899 | 9/2-9/10 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| John Barry | barry-002joh | 1899 | 5/30- | 78 g. | Washington | National League | Washington, DC |
| Thomas Barry | barry-002tom | 1899-03 | Brown Univ. | College | , | ||
| W.T. Bartlett | bartle000wt- | 1899 | Union SC | Independent | Union, SC | ||
| Harry Barton | barton001har | 1899 | Muncie | Independent | Muncie, PA | ||
| Fred Bateman | batema001fre | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| Bates | bates-001--- | 1899 | 5/3 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Frank Bates | bates-002fra | 1899 | -5/22 | 2 g. | St. Louis | National League | St. Louis, MO |
| Frank Bates | bates-002fra | 1899 | 21 g. | Cleveland | National League | Cleveland, OH | |
| George Bates | bates-001geo | 1899 | no g. | Pawtucket Colts | New England League | Pawtucket, RI | |
| Larry Battam | battam001lar | 1899 | +5/27-9/16 | Derby Lushers | Connecticut State League | Derby, CT | |
| Bauer | bauer-007--- | 1899 | 6/12-6/13 | Newark Colts | Atlantic League | Newark, NJ | |
| Harry Bay | bay---001har | 1899 | 36 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Harry Bay | bay---001har | 1899 | 7/3-7/30 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Harry Bay | bay---001har | 1899 | 7/31-9/9 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Burley Bayer | bayer-001bur | 1899 | 6/17 | 1 g. | Louisville | National League | Louisville, KY |
| Carl Beal | beal--001car | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| Joe Bean | bean--001jos | 1899 | 5/8-9/9 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Ben Beaumont | beaumo001ben | 1899 | 4/28-9/10 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Ginger Beaumont | beaumo001cla | 1899 | 4/21- | 111 g. | Pittsburgh | National League | Pittsburgh, PA |
| Erve Beck | beck--001erv | 1899 | 132 g. | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Erve Beck | beck--001erv | 1899 | 9/19- | 8 g. | Brooklyn | National League | Brooklyn, NY |
| Arthur Becker | becker002art | 1899 | +5/14+ | Evan-Columbian | Courier | Evansville, IN | |
| Bob Becker | becker001bob | 1899 | 4/29- | 34 g. | Rochester Bronchos | Eastern League | Rochester, NY |
| Jake Beckley | beckle001jac | 1899 | 135 g. | Cincinnati | National League | Cincinnati, OH | |
| Warren Beckwith | beckwi001war | 1899 | Montgomery Senators/Dallas Scrappers | Southern League | Dallas, TX | ||
| Warren Beckwith | beckwi001war | 1899 | 8 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Charles Beecher | beeche001cha | 1899 | 39 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Charles Beecher | beeche001cha | 1899 | Montgomery Senators/Dallas Scrappers | Southern League | Dallas, TX | ||
| Ed Behan | behan-001ed- | 1899 | 2 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Ira Belden | belden002ira | 1899 | 140 g. | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Bell | 1899 | +9/17+ | Cuban Giants | Independent | Cuban, | ||
| Frank Belt | belt--001fra | 1899 | 5/1- | 120 g. | Mansfield Haymakers | Interstate League | Mansfield, OH |
| Harry Bemis | bemis-001har | 1899 | 4/28-6/3 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Eugene Bene | bene--001eug | 1899 | E. St. Louis | Independent | East St. Louis, IL | ||
| Arthur Benedetti | benede002art | 1899 | 5/17-5/18 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Pug Bennett | bennet001jus | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Mattoon, IL | ||
| Frank Bensinger | bensin001fra | 1899 | Hoboken | Independent | Hoboken, NJ | ||
| Frank Bensinger | bensin001fra | 1899 | 5/23-6/1 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Frank Bensinger | bensin001fra | 1899 | 8/17 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Frank Bensinger | bensin001fra | 1899 | 8/30-9/3 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Bill Bergen | bergen001wil | 1899 | 4/30-9/17 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Marty Bergen | bergen001mar | 1899 | 72 g. | Boston | National League | Boston, MA | |
| Tun Berger | berger001tun | 1899 | Umpire | Atl | , | ||
| Berkeley | berkel002--- | 1899 | Denver | ColoSt | Denver, CO | ||
| W.H. Berkshire | berksh001w-- | 1899 | 5/- | 1 g. | Guelph Maple Leafs | Canadian League | Guelph, ON |
| Curt Bernard | bernar001cur | 1899 | 5/10-8/7 | Brockton Shoemakers | New England League | Brockton, MA | |
| Curt Bernard | bernar001cur | 1899 | 8/8-8/9 | Taunton Herrings | New England League | Taunton, MA | |
| Curt Bernard | bernar001cur | 1899 | 8/11-9/9 | Albany Senators | New York State League | Albany, NY | |
| Bill Bernhard | bernha001wil | 1899 | 4/24- | 21 g. | Philadelphia | National League | Philadelphia, PA |
| Hodge Berry | berry-000hod | 1899 | 5/26-8/17 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Joe Berry | berry-001jos | 1899 | , | ||||
| Harry Berte | berte-001har | 1899 | 5/1- | Dayton Veterans | Interstate League | Dayton, OH | |
| Harry Berte | berte-001har | 1899 | -9/20 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Sidney Berte | berte-000sid | 1899 | Cinc.-Gyms | Independent | Cincinnati, OH | ||
| Bob Bescher | besche001rob | 1899-02 | Notre Dame | College | , | ||
| Conrad Best | best--001con | 1899 | 5/2-5/25 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Conrad Best | best--001con | 1899 | 6/11-8/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Conrad Best | best--001con | 1899 | 8/12-9/10 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Fred Betts | betts-001fre | 1899 | 4/27-8/5 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| William Betts | 1899 | Umpire | Atl | , | |||
| William Betts | 1899 | 8/14-8/23 | Umpire | East | , | ||
| Fred Beusse | 1899-00 | Univ. Georgia | College | , | |||
| Monte Beville | bevill001hen | 1899 | 4/27-6/11 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Monte Beville | bevill001hen | 1899 | 7/11-7/18 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Monte Beville | bevill001hen | 1899 | 7/20-7/30 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Monte Beville | bevill001hen | 1899 | 7/31-9/17 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Kid Bevis | bevis-001e-- | 1899 | Mulhall MO | Independent | Muhall, MO | ||
| Ed Biecher | bieche001ed- | 1899 | 28 g. | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Lou Bierbauer | bierba002lou | 1899 | 4/27-7/17 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Lou Bierbauer | bierba002lou | 1899 | 7/18-9/10 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Albert Bigelow | bigelo000alb | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| William Billings | billin001wil | 1899 | 1 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| William Billings | billin001wil | 1899 | 3 g. | San Francisco A's | California League | San Francisco, CA | |
| William Billings | billin001wil | 1899 | 1 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| William Billings | billin001wil | 1899 | 22 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| George Bindloss | bindlo001geo | 1899 | New London Whalers | Connecticut State League | New London, CT | ||
| Mike Birmingham | birmin001mic | 1899 | 5/1-5/6 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Mike Birmingham | birmin001mic | 1899 | 5/11-5/13 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Mike Birmingham | birmin001mic | 1899 | 5/22-9/9 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| John Bishop | bishop001joh | 1899 | 4/28-8/4 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| John Bishop | bishop001joh | 1899 | 8/9-9/9 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Norman Bishop | bishop001nor | 1899 | 1 g. | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Wilbert Bissell | bissel001wil | 1899 | Mich.-Amateur | Independent | , MI | ||
| Wilbert Bissell | bissel001wil | 1899 | Findley | Independent | Findley, OH | ||
| Bixby | bixby-001--- | 1899 | 5/27 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| George Black | black-001geo | 1899 | 9 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| G. Blackburn | blackb001g-- | 1899 | 1 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| George Blackburn | blackb001geo | 1899 | 27 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| George Blackburn | blackb001geo | 1899 | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | ||
| Blacklock | blackl001--- | 1899 | 9 g. | Woodstock Bains | Canadian League | Woodstock, ON | |
| Harry Blake | blake-001har | 1899 | 97 g. | St. Louis | National League | St. Louis, MO | |
| James Blake | 1899 | 5/29-6/1 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | ||
| Frank Blanford | blanfo000fra | 1899 | +8/27+ | Sioux Falls | Independent | Sioux Falls, SD | |
| Fred Blanford | blanfo001f-- | 1899 | 6/10- | 32 g. | Bloomington Blues | Western Association | Bloomington, IL |
| Fred Blanford | blanfo001f-- | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | ||
| Bob Blewett | blewet001rob | 1899 | Beloit College | College | , | ||
| Bob Blewett | blewet001rob | 1899 | no g. | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Bob Blewett | blewet001rob | 1899 | Sioux City | Independent | Sioux City, IA | ||
| Bob Blincoe | blinco001rob | 1899 | 2 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Blodgett | blodge002--- | 1899-01 | +5/14+ '01 | MI School Deaf | School | , | |
| John Blue | blue--003joh | 1899 | no g. | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Fred Bocock | bocock001--- | 1899 | 5/24 | Houston Buffaloes | Texas Association | Houston, TX | |
| Al Bodemer | 1899 | no g. | Quincy/Dubuque | Western Association | Quincy, IL | ||
| Dave Bodie | bodie-001dav | 1899 | 1 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Pete Bolger | bolger001pet | 1899 | 1 g. | San Francisco A's | California League | San Francisco, CA | |
| George Bone | bone--001geo | 1899 | 5/10-8/4 | Pawtucket Colts | New England League | Pawtucket, RI | |
| George Bone | bone--001geo | 1899 | 8/16-9/4 | Manchester Manchesters | New England League | Manchester, NH | |
| Frank Bonner | bonner001fra | 1899 | 4/28-5/12 | Hartford Indians | Eastern League | Hartford, CT | |
| Frank Bonner | bonner001fra | 1899 | 85 g. | Washington | National League | Washington, DC | |
| Bonno | bonno-001--- | 1899 | 5/16 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| William Bopst | bopst-001wil | 1899 | no g. | Rome? | NYSt | Rome, | |
| George Borchers | borche001geo | 1899 | 35 g. | San Jose Brewers | California League | San Jose, CA | |
| George Borchers | borche001geo | 1899 | 20 g. | Oakland Oaks | California League | Oakland, CA | |
| Al Borland | borlan001al- | 1899 | 7 g. | Oakland Oaks | California League | Oakland, CA | |
| Al Borland | borlan001al- | 1899 | 2 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Ed Borland | borlan001ed- | 1899 | Umpire | In-Il | , | ||
| Billy Bottenus | botten001wil | 1899 | 36 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Billy Bottenus | botten001wil | 1899 | 7/1-8/6 | Newark Colts | Atlantic League | Newark, NJ | |
| Billy Bottenus | botten001wil | 1899 | 8/18-9/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Cy Bowen | bowen-001sut | 1899 | 4/27-6/5 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Cy Bowen | bowen-001sut | 1899 | 6/3-9/6 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Frank Bowerman | bowerm001fra | 1899 | 110 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Leon Bowley | bowley001leo | 1899 | 1 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Bill Bowman | bowman001bil | 1899 | 4/29-5/12 | Worcester Farmers | Eastern League | Worcester, MA | |
| F. Bowman | bowman000f-- | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Mattoon, IL | ||
| Frank Bowman | bowman001fra | 1899 | 3 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| Boyd | boyd--015--- | 1899 | 7/24 | Portland Phenoms | New England League | Portland, ME | |
| Frank Boyd | boyd--002fra | 1899 | 4/29-5/26 | Hartford Indians | Eastern League | Hartford, CT | |
| Frank Boyd | boyd--002fra | 1899 | 6/3-6/16 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Frank Boyd | boyd--002fra | 1899 | 6/17-8/28 | Umpire | East | , | |
| C. H. Boylan | 1899 | no g. | Oswego Grays | New York State League | Oswego, NY | ||
| Charles Boyle | boyle-001cha | 1899 | 5/3-5/17 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Charles Boyle | boyle-001cha | 1899 | 5/27-7/20 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Jack Boyle | boyle-001jac | 1899 | 5/17-7/17 | Kansas City Blues | Western League | Kansas City, MO | |
| Paddy Boyle | boyle-001pad | 1899 | 39 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Paddy Boyle | boyle-001pad | 1899 | Montgomery Senators/Dallas Scrappers | Southern League | Dallas, TX | ||
| Paddy Boyle | boyle-001pad | 1899 | 6/22-7/5 | Houston Buffaloes | Texas Association | Houston, TX | |
| Paddy Boyle | boyle-001pad | 1899 | 8/7-9/2 | Worcester Farmers | Eastern League | Worcester, MA | |
| Harry Brace | brace-001har | 1899 | Wallingford | Independent | Wallingford, CT | ||
| Harry Brace | brace-001har | 1899 | 6/2 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Harry Brace | brace-001har | 1899 | -7/22 | Wallingford | Independent | Wallingford, CT | |
| George Bradford | bradfo001geo | 1899 | 25 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Bill Bradley | bradle004wil | 1899 | 5/12-7/30 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Bill Bradley | bradle004wil | 1899 | 7/31-8/17 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Bill Bradley | bradle004wil | 1899 | 8/26- | 35 g. | Chicago | National League | Chicago, IL |
| Edward Bradley | bradle001edw | 1899 | 5/1-7/18 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Edward Bradley | bradle001edw | 1899 | 7/20-7/30 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Edward Bradley | bradle001edw | 1899 | 7/31-9/17 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| George Brady | brady-001geo | 1899 | 4/17-7/5 | Austin Senators | Texas Association | Austin, TX | |
| George Brady | brady-001geo | 1899 | 7/18-7/19 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| H.A. Brady | brady-000h-- | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| James Brady | brady-006jam | 1899 | 5/12-5/27 | Schenectady Electricians | New York State League | Schenectady, NY | |
| James Brady | brady-006jam | 1899 | Emlenton PA | Independent | Emlenton, PA | ||
| Tom Brady | brady-001tho | 1899 | 7/12-9/4 | Taunton Herrings | New England League | Taunton, MA | |
| Brampton | brampt000--- | 1899 | New Bedford MA | Independent | New Bedford, MA | ||
| Brampton | brampt000--- | 1899 | 5/-5/ | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Willie Brandt | brandt002wil | 1899 | Ilion | Independent | Ilion, NY | ||
| Willie Brandt | brandt002wil | 1899 | 7/26-7/30 | Oswego Grays | New York State League | Oswego, NY | |
| Willie Brandt | brandt002wil | 1899 | Ilion | Independent | Ilion, NY | ||
| Brannon | branno005--- | 1899 | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | ||
| Kitty Bransfield | bransf001wil | 1899 | 5/1-9/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Kitty Brashear | brashe001nor | 1899 | 5/6- | 25 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA |
| Kitty Brashear | brashe001nor | 1899 | 6/25-7/30 | 3 g. | Louisville | National League | Louisville, KY |
| Kitty Brashear | brashe001nor | 1899 | 8/5-9/17 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Roy Brashear | brashe002roy | 1899 | 14 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Roy Brashear | brashe002roy | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Mattoon, IL | ||
| Silver Braun | braun-005wil | 1899 | 4/30-9/10 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Edwin Breckenridge | brecke002edw | 1899 | 5/10-8/7 | Brockton Shoemakers | New England League | Brockton, MA | |
| Jimmie Breen | breen-002jam | 1899 | Ashtabula | Independent | Ashtabula, OH | ||
| Theodore Breitenstein | breite001the | 1899 | 33 g. | Cincinnati | National League | Cincinnati, OH | |
| O. Brekke | 1899 | +6/8+ | Buxton | Independent | Buxton, ND | ||
| Robin Brem | brem--000rob | 1899-02 | U. North Carolina | College | , | ||
| Brennan | brenna003--- | 1899 | 5/10-5/13 | Pawtucket Colts | New England League | Pawtucket, RI | |
| John Brennan | 1899 | 6/15-9/11 | Umpire | West | , | ||
| John Brennan | brenna003jac | 1899 | -10/1 | 24 g. | MLB Umpire | National League | , |
| John Brennan | brenna009joh | 1899 | Holy Cross Col. | College | , | ||
| John Brennan | brenna009joh | 1899 | 7/18-7/19 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Alex Brenner | bremme002--- | 1899 | ChicCity | , | |||
| Alex Brenner | bremme002--- | 1899 | Quincy/Dubuque | Western Association | Quincy, IL | ||
| John Breslin | bresli002joh | 1899 | no g. | Brockton Shoemakers | New England League | Brockton, MA | |
| Roger Bresnahan | bresna001rog | 1899 | 4/28-5/11 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Roger Bresnahan | bresna001rog | 1899 | 6/18-6/22 | Buffalo Bisons | Western League | Buffalo, NY | |
| Roger Bresnahan | bresna001rog | 1899 | Manistee MI | Independent | Manistee, MI | ||
| Buttons Briggs | briggs001her | 1899 | 4/28-7/4 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Buttons Briggs | briggs001her | 1899 | 8/2-9/9 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Albert Briseno | brisen001alb | 1899 | 26 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| George Bristow | bristo002geo | 1899 | 4/15-5/8 | 3 g. | Cleveland | National League | Cleveland, OH |
| George Bristow | bristo002geo | 1899 | 5/21-5/24 | Kansas City Blues | Western League | Kansas City, MO | |
| Billy Brockhoff | brockh001wil | 1899 | 41 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Billy Brockhoff | brockh001wil | 1899 | 30 g. | San Francisco A's | California League | San Francisco, CA | |
| Brockton | brockt002--- | 1899 | 5/21 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Charlie Brockway | brockw000cha | 1899 | 4/16-6/3 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Charlie Brockway | brockw000cha | 1899 | 6/6-6/25 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Charlie Brockway | brockw000cha | 1899 | 7/25-8/2 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Charlie Brockway | brockw000cha | 1899 | 8/4-8/7 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Charlie Brockway | brockw000cha | 1899 | Umpire | CtSt | , | ||
| James Brodie | brodie001jam | 1899 | 4/30-5/18 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| James Brodie | brodie001jam | 1899 | 6/10-8/8 | Dayton Veterans | Interstate League | Dayton, OH | |
| Steve Brodie | brodie001wal | 1899 | 137 g. | Baltimore | National League | Baltimore, MD | |
| Fred Brott | brott-001j-- | 1899 | no g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Fred Brott | brott-001j-- | 1899 | 33 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Dan Brouthers | brouth001den | 1899 | 4/28-6/19 | Springfield Ponies | Eastern League | Springfield, MA | |
| Dan Brouthers | brouth001den | 1899 | 6/26-7/6 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Brown | brown-152--- | 1899 | 41 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| Brown | brown-039--- | 1899 | +7/13+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Brown | 1899 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |||
| Brown | brown-019--- | 1899 | 8/5-8/8 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Brown | brown-234--- | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Allie Brown | brown-001all | 1899 | 5/25 | Derby Lushers | Connecticut State League | Derby, CT | |
| Bob Brown | brown-027rob | 1899 | Notre Dame U. | College | , | ||
| Charlie Brown | brown-019cha | 1899 | 5/3-5/14 | Dayton Veterans | Interstate League | Dayton, OH | |
| Dick Brown | brown-001ric | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | ||
| James Brown | brown-003jam | 1899 | 4/29-6/8 | Buffalo Bisons | Western League | Buffalo, NY | |
| James Brown | brown-003jam | 1899 | 6/27-8/6 | Syracuse Stars | Eastern League | Syracuse, NY | |
| James Brown | brown-003jam | 1899 | 8/10-8/31 | Binghamton Bingos | New York State League | Binghamton, NY | |
| John Brown | brown-018joh | 1899 | 5/30-8/8 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| John Brown | brown-018joh | 1899 | 8/30-9/9 | New Haven Blues | Connecticut State League | New Haven, CT | |
| John Brown | brown-103--- | 1899 | ChicCity | , | |||
| Mordecai Brown | brown-001mor | 1899 | Brazil | Independent | Brazil, IN | ||
| Red Brown | brown-001red | 1899 | Rockford Rough Riders | Western Association | Rockford, IL | ||
| Red Brown | brown-001red | 1899 | -6/3 | 19 g. | Ottumwa Giants | Western Association | Ottumwa, IA |
| Red Brown | brown-001red | 1899 | 7/6 | Buffalo Bisons | Western League | Buffalo, NY | |
| Stub Brown | brown-001stu | 1899 | 5/12-6/4 | Newark Colts | Atlantic League | Newark, NJ | |
| Tom Brown | brown-012tho | 1899 | 4/29-9/9 | Springfield Ponies | Eastern League | Springfield, MA | |
| Tom Brown | brown-012tho | 1899 | 2 g. | MLB Umpire | National League | , | |
| George Browne | browne001geo | 1899 | 5/24-7/30 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| George Browne | browne001geo | 1899 | 7/31-9/9 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Henry Brownrigg | brownr001hen | 1899 | 4/16-5/29 | Houston Buffaloes | Texas Association | Houston, TX | |
| Lou Bruce | bruce-001lou | 1899 | Syracuse U. | College | , | ||
| Lou Bruce | bruce-001lou | 1899 | Norristown | S-Pro | Norristown, PA | ||
| Lou Bruce | bruce-001lou | 1899 | Mt. Holly NJ | S-Pro? | Mount Holly, NJ | ||
| Lou Bruce | bruce-001lou | 1899 | Indians | S-Pro | , | ||
| Frank Bruner | bruner000f-- | 1899 | Muncie/Crawford | Indiana-Illinois League | Muncie, IN | ||
| Geroge Bruner | bruner001law | 1899 | 5/3- | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Geroge Bruner | bruner001law | 1899 | 6/3 | Chatham Reds | Canadian League | Chatham, ON | |
| Ed Bruyette | bruyet001edw | 1899 | no g. | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Clarence Bryan | bryan-003cla | 1899-00 | U. of Tennessee | College | , | ||
| Will Bryan | bryan-004wil | 1899 | Peoria IL | Independent | Peoria, IL | ||
| George Bubser | bubser001geo | 1899 | 4 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Al Buckenberger | bucken001al- | 1899 | 4/28-9/10 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Buckley | 1899 | Butte | MontSt | Butte, MT | |||
| Dick Buckley | buckle001dic | 1899 | 5/1-7/17 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Dick Buckley | buckle001dic | 1899 | 7/18-9/4 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Patrick Buckley | buckle001pat | 1899 | 5/17-9/16 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Harry Buckner | buckne002har | 1899 | Chicago Columbia | Independent | Chicago, IL | ||
| Charlie Buelow | buelow001cha | 1899 | 35 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Charlie Buelow | buelow001cha | 1899 | 6/28-7/10 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Charlie Buelow | buelow001cha | 1899 | 7/28-9/10 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Fritz Buelow | buelow001fre | 1899 | 4/27-9/2 | Detroit Tigers | Western League | Detroit, MI | |
| Fritz Buelow | buelow001fre | 1899 | 9/28- | 7 g. | St. Louis | National League | St. Louis, MO |
| Berley Buers | 1899 | Muncie/Crawford | Indiana-Illinois League | Muncie, IN | |||
| Carl Burbank | burban000car | 1899 | Wash.-Eastern AC | Independent | Washington, DC | ||
| Carl Burbank | burban000car | 1899 | Wash.-Central High | HighSchool | , | ||
| Joseph Burdett | burdet001jos | 1899 | Guelph Maple Leafs | Canadian League | Guelph, ON | ||
| William Burge | burge-001wil | 1899 | 25 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Burke | burke-002--- | 1899 | 6/22-6/27 | Albany Senators | New York State League | Albany, NY | |
| Eddie Burke | burke-002edd | 1899 | 4/28-8/10 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Jimmy Burke | burke-004jam | 1899 | 2 g. | St. Louis | National League | St. Louis, MO | |
| Jimmy Burke | burke-004jam | 1899 | 4/29-9/9 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Joe Burke | burke-002joe | 1899 | 4/30-5/6 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Joe Burke | burke-002joe | 1899 | 6/11-8/9 | Dayton Veterans | Interstate League | Dayton, OH | |
| Joe Burke | burke-002joe | 1899 | 8/12-9/17 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Thomas Burke | burke-004tho | 1899 | 2 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Tom Burke | burke-002tom | 1899 | 6/20-6/21 | Derby Lushers | Connecticut State League | Derby, CT | |
| Jesse Burkett | burket001jes | 1899 | 141 g. | St. Louis | National League | St. Louis, MO | |
| Burkhart | burkha006--- | 1899 | 8/5 | Dayton Veterans | Interstate League | Dayton, OH | |
| Walter Burnham | burnha002wal | 1899 | 5/10-8/8 | Brockton Shoemakers | New England League | Brockton, MA | |
| Burns | burns-052--- | 1899 | 8/29-8/30 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Burns | burns-007--- | 1899 | 5/15-6/17 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Burns | burns-007--- | 1899 | 6/21-6/25 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Billy Burns | burns-013wil | 1899 | Atlantic City | Independent | Atlantic City, NJ | ||
| Billy Burns | burns-013wil | 1899 | Chester | Independent | Chester, PA | ||
| Jack Burns | burns-007joh | 1899 | 4/28-8/5 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Jack Burns | burns-007joh | 1899 | 8/9-9/9 | Kansas City Blues | Western League | Kansas City, MO | |
| Jack Burns | burns-010joh | 1899 | Duluth | Duluth, MN | |||
| James Burns | burns-013jam | 1899 | 28 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Pete Burns | burns-001pet | 1899 | Chicago Columbia | Independent | Chicago, IL | ||
| Thomas Burns | burns-001oys | 1899 | -6/22 | 52 g. | MLB Umpire | National League | , |
| Tom Burns | burns-001tom | 1899 | Chicago | National League | Chicago, IL | ||
| O. Burr | 1899 | New London Whalers | Connecticut State League | New London, CT | |||
| Frank Burrell | burrel001bus | 1899 | 5/10-9/4 | Taunton Herrings | New England League | Taunton, MA | |
| Leland Burrell | burrel000lel | 1899 | St. John Military | Academy | , | ||
| Ad Burris | burris002a-- | 1899 | 4/17-4/24 | Austin Senators | Texas Association | Austin, TX | |
| Harry Burton | burton007--- | 1899 | Anaconda | Independent | Anaconda, MT | ||
| Harry Burton | burton007--- | 1899 | Helena | Independent | Helena, MT | ||
| Joe Burton | burton001joe | 1899 | Mansfield Haymakers | Interstate League | Mansfield, OH | ||
| Joe Burton | burton001joe | 1899 | 6/- | Dayton Veterans | Interstate League | Dayton, OH | |
| Burtwaite | burtwa001--- | 1899 | 6/16-6/18 | Newark Colts | Atlantic League | Newark, NJ | |
| Frank Busky | 1899 | Chicago Unions | Independent | Chicago, IL | |||
| Charley Busse | busse-001car | 1899 | 5/17-8/25 | New London Whalers | Connecticut State League | New London, CT | |
| Charley Busse | busse-001car | 1899 | 8/30-9/16 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Ted Busse | busse-001ted | 1899 | 1 g. | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Harry Bussey | bussey001har | 1899 | 57 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Harry Bussey | bussey001har | 1899 | 6/- | Woodstock Bains | Canadian League | Woodstock, ON | |
| Dick Butler | butler001dic | 1899 | 12 g. | Washington | National League | Washington, DC | |
| Dick Butler | butler001dic | 1899 | 7/15-9/10 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Frank Butler | butler003fra | 1899 | 4/27-5/6 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Ike Butler | butler001isa | 1899 | 26 g. | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Edward Butman | butman001edw | 1899 | 5/10-5/17 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Edward Butman | butman001edw | 1899 | +6/30-8/19+ | Norwich Witches | Connecticut State League | Norwich, CT | |
| Edward Butman | butman001edw | 1899 | 9/2+ | New London Whalers | Connecticut State League | New London, CT | |
| John Buttermore | butter001joh | 1899 | 4/27-8/6 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| John Buttermore | butter001joh | 1899 | 8/- | 43 g. | Mansfield Haymakers | Interstate League | Mansfield, OH |
| Bill Byers | byers-002jam | 1899 | 38 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Bill Byers | byers-002jam | 1899 | 6/10-7/9 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Bill Byers | byers-002jam | 1899 | 7/11-7/16 | Newark Colts | Atlantic League | Newark, NJ | |
| Bill Byers | byers-002jam | 1899 | 7/19-9/16 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| John Cahill | cahill006joh | 1899 | Umpire | Calif | , | ||
| George Cain | cain--002geo | 1899 | 5/22-7/20 | Norwich Witches | Connecticut State League | Norwich, CT | |
| George Cain | cain--002geo | 1899 | 7/26-8/12 | New Haven Blues | Connecticut State League | New Haven, CT | |
| George Cain | cain--002geo | 1899 | 8/17 | Derby Lushers | Connecticut State League | Derby, CT | |
| George Cain | cain--002geo | 1899 | Richmond Bluebirds | Atlantic League | Richmond, VA | ||
| Caine | caine-001--- | 1899 | 10 g. | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Caine | caine-001--- | 1899 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | ||
| Harry Calback | 1899 | Ilion | Independent | Ilion, NY | |||
| Garah Caldwell | caldwe000gar | 1899 | Concord | Independent | Concord, NC | ||
| Dave Calhoun | calhou001dav | 1899 | 5/2-8/5 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Dave Calhoun | calhou001dav | 1899 | 8/8-9/9 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Edward Callahan | callah003edw | 1899 | 5/10-5/24 | Manchester Manchesters | New England League | Manchester, NH | |
| Jack Callahan | callah025--- | 1899 | 5/10-8/5 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Jimmy Callahan | callah002jam | 1899 | 47 g. | Chicago | National League | Chicago, IL | |
| John Callahan | callah004joh | 1899 | 15 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| John Callahan | callah004joh | 1899 | Ottumwa Giants | Western Association | Ottumwa, IA | ||
| C.W. Cameron | camero001c-- | 1899 | 1 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| C.W. Cameron | camero001c-- | 1899 | 11 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Howie Camnitz | camnit001sam | 1899-04 | Centre College | College | , | ||
| Camp | camp--007--- | 1899 | 7/23 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Lew Camp | camp--001lew | 1899 | 4/27-6/10 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Lew Camp | camp--001lew | 1899 | 6/20-7/8 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Count Campau | campau001cha | 1899 | 4/29-9/9 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Campbell | campbe019--- | 1899 | +6/2+ | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | |
| Billy Campbell | campbe004wil | 1899 | 53 g. | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Billy Campbell | campbe004wil | 1899 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | ||
| Thomas Campbell | campbe005tho | 1899 | 4/29-9/9 | Springfield Ponies | Eastern League | Springfield, MA | |
| Thomas Campbell | campbe005tho | 1899 | 9/12-9/14 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Joe Cantillon | cantil001jos | 1899 | 4/28-9/10 | Umpire | West | , | |
| Carey | carey-018--- | 1899 | 1 g. | Quincy/Dubuque | Western Association | Dubuque, IA | |
| George Carey | carey-002geo | 1899 | 4/28-9/11 | Minneapolis Millers | Western League | Minneapolis, MN | |
| J. P. Carey | 1899 | Toronto Maple Leafs | Eastern League | Toronto, ON | |||
| Will Carey | carey-005wil | 1899 | 74 g. | London Cockneys | Canadian League | London, ON | |
| Will Carey | carey-005wil | 1899 | Guelph Maple Leafs | Canadian League | Guelph, ON | ||
| Bobby Cargo | cargo-001bob | 1899 | 139 g. | New Castle Quakers | Interstate League | New Castle, PA | |
| Chick Cargo | cargo-001cha | 1899 | 5/12-9/9 | Oswego Grays | New York State League | Oswego, NY | |
| Chick Cargo | cargo-001cha | 1899 | 8/19 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| John Carlin | carlin002joh | 1899 | 5/12-8/20 | Umpire | NYSt | , | |
| W.K. Carmon | carmon001w-- | 1899 | no g. | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Carmona | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Carmona | carmon000--- | 1899 | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| Bill Carney | carney002wil | 1899 | 5/8-9/20 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Jack Carney | carney002joh | 1899 | 5/10-9/4 | Manchester Manchesters | New England League | Manchester, NH | |
| Pat Carney | carney001pat | 1899 | Holy Cross Col. | College | , | ||
| Hick Carpenter | carpen001hic | 1899 | MLB Umpire | National League | , | ||
| Charlie Carr | carr--001cha | 1899 | 5/17-9/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Lew Carr | carr--001lew | 1899 | Moravia NY | Independent | Moravia, NY | ||
| Will Carr | carr--006wil | 1899 | 3/9+ | Horner Mili School | School | , | |
| Bill Carrick | carric001wil | 1899 | 44 g. | New York | National League | New York, NY | |
| Frank Carriveau | carriv001fra | 1899 | 5/10-5/13 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| Riley Carroll | carrol000ril | 1899 | 7 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Carry/Cary | 1899 | Minneapolis Millers | Western League | Minneapolis, MN | |||
| Kid Carsey | carsey001wil | 1899 | 11 g. | Cleveland | National League | Cleveland, OH | |
| Kid Carsey | carsey001wil | 1899 | 4 g. | Washington | National League | Washington, DC | |
| Kid Carsey | carsey001wil | 1899 | 5 g. | New York | National League | New York, NY | |
| W.K. Carson | carson001w-- | 1899 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | ||
| Carter | carter017--- | 1899 | 7/27-9/4 | Taunton Herrings | New England League | Taunton, MA | |
| Kid Carter | carter000kid | 1899 | +6/4+ | Cuban Giants | Independent | Cuban, | |
| Nick Carter | carter002con | 1899 | U. of Virginia | College | , | ||
| Nick Carter | carter002con | 1899 | 5/6-6/19 | Dayton Veterans | Interstate League | Dayton, OH | |
| Nick Carter | carter002con | 1899 | 6/23 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Bob Caruthers | caruth001bob | 1899 | Umpire | WestA | , | ||
| Bob Caruthers | caruth001bob | 1899 | +7/14-7/23+ | Umpire | IntSt | , | |
| Casey | casey-028--- | 1899 | 5/12 | Brockton Shoemakers | New England League | Brockton, MA | |
| Casey | casey-024--- | 1899 | 5/15 | Newport Colts | New England League | Newport, RI | |
| Casey | casey-009--- | 1899 | +7/8+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Dan Casey | casey-002dan | 1899 | 6/21 | Binghamton Bingos | New York State League | Binghamton, NY | |
| James Casey | casey-002jam | 1899 | 4/14- | 9 g. | Washington | National League | Washington, DC |
| James Casey | casey-002jam | 1899 | 134 g. | Brooklyn | National League | Brooklyn, NY | |
| Pearl Casey | casey-001pea | 1899 | Ogden UT | Independent | Ogden, UT | ||
| Pearl Casey | casey-001pea | 1899 | Billings | MontSt | Billings, MT | ||
| Pearl Casey | casey-001pea | 1899 | Helena | MontSt | Helena, MT | ||
| Pete Cassidy | cassid003pet | 1899 | 6 g. | Brooklyn | National League | Brooklyn, NY | |
| Pete Cassidy | cassid003pet | 1899 | 46 g. | Washington | National League | Washington, DC | |
| Pete Cassidy | cassid003pet | 1899 | 6/24-9/10 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Charles Castner | castne001--- | 1899 | Astorio | Independent | Astorio, OR | ||
| Lou Castro | castro001lou | 1899 | Manhattan Col. | College | , | ||
| Lou Castro | castro001lou | 1899 | Atlantic City | Independent | Atlantic City, NJ | ||
| Eli Cates | cates-002eli | 1899 | 4/30-9/17 | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Joe Cavanaugh | cavana001jos | 1899 | 4/17-7/5 | Austin Senators | Texas Association | Austin, TX | |
| Charles Cavell | cavell001cha | 1899 | 4/29-6/24 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Charles Cavell | cavell001cha | 1899 | 6/30-8/17 | Hartford Indians | Eastern League | Hartford, CT | |
| Charles Cavell | cavell001cha | 1899 | 8/22-8/23 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Charles Cawley | cawley001cha | 1899 | 8/25-9/17 | Dayton Veterans | Interstate League | Dayton, OH | |
| Challenger | challe001--- | 1899 | 8/1 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Brownie Chamberlain | chambe001c-- | 1899 | 14 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| Brownie Chamberlain | chambe001c-- | 1899 | Selma AL? | Selma, AL | |||
| Brownie Chamberlain | chambe001c-- | 1899 | 6/5-7/5 | Houston Buffaloes | Texas Association | Houston, TX | |
| Brownie Chamberlain | chambe001c-- | 1899 | +7/14+ | Atchison | Independent | Atchison, KS | |
| Cy Chamberlain | chambe001cy- | 1899 | 5/17-9/16 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Ice Box Chamberlain | chambe001ice | 1899 | 1 g. | Buffalo Bisons | Western League | Buffalo, NY | |
| Rome Chambers | chambe001rom | 1899 | ? | So | , | ||
| Frank Chance | chance001fra | 1899 | 64 g. | Chicago | National League | Chicago, IL | |
| Frank Chance | chance001fra | 1899 | 2 g. | Fresno | SanJoaq | Fresno, CA | |
| Arthur Chapin | chapin001a-- | 1899 | Phoenix NY HS | HighSchool | , | ||
| Charles Chapman | chapma001cha | 1899-02 | Princeton Univ | College | , | ||
| Jack Chapman | chapma002jac | 1899 | 6/?-7/? | Newark Colts | Atlantic League | Newark, NJ | |
| Jack Chapman | chapma002jac | 1899 | 7/17-9/16 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Young Charles | charle001you | 1899 | +6/11+ | Lockport NY | Independent | Lockport, NY | |
| Chase | chase-011--- | 1899 | 5/12-6/24 | Rome Romans | New York State League | Rome, NY | |
| Charlie Chech | chech-001cha | 1899 | 27 g. | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Jack Chesbro | chesbr002joh | 1899 | 4/27-7/7 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Jack Chesbro | chesbr002joh | 1899 | 7/12- | 19 g. | Pittsburgh | National League | Pittsburgh, PA |
| Frank Chilcott | chilco001fra | 1899 | 5/12-5/25 | Albany Senators | New York State League | Albany, NY | |
| Cupid Childs | childs001cla | 1899 | 125 g. | St. Louis | National League | St. Louis, MO | |
| Pete Childs | childs001geo | 1899 | 4/27-8/5 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Pete Childs | childs001geo | 1899 | +8/15-9/16 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Pearce Chiles | chiles001pea | 1899 | , | ||||
| Pearce Chiles | chiles001pea | 1899 | 4/18- | 97 g. | Philadelphia | National League | Philadelphia, PA |
| Christian | christ025--- | 1899 | 5 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Christie | christ017--- | 1899 | 6/21 | Woodstock Bains | Canadian League | Woodstock, ON | |
| William Clabby | clabby001wil | 1899 | 7/18-7/20 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| William Clabby | clabby001wil | 1899 | +7/25- | Umpire | CtSt | , | |
| Bill Clancy | clancy002wil | 1899 | West Shore | Independent | West Shore, | ||
| Charles Clancy | clancy001cha | 1899 | 5/18-9/16 | Derby Lushers | Connecticut State League | Derby, CT | |
| William Clancy | clancy004wil | 1899 | 5/10-8/7 | Brockton Shoemakers | New England League | Brockton, MA | |
| William Clancy | clancy004wil | 1899 | 8/11-9/9 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Clare | clare-002--- | 1899 | St. Paul Apostles/Saints | Western League | St. Paul, MN | ||
| Dad Clark | clark-002dad | 1899 | 6/8-6/14 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Peter Clark | clark-002pet | 1899 | 83 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Vic Clark | clark-001vic | 1899 | Atlantic City | Independent | Atlantic City, NJ | ||
| Vic Clark | clark-001vic | 1899 | +9/18+ | Chester | Independent | Chester, PA | |
| Wilkie Clark | clark-001wil | 1899 | 6/20-9/15 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| William Clark | clark-016wil | 1899 | 5/10- | Portland Phenoms | New England League | Portland, ME | |
| William Clark | clark-016wil | 1899 | 6/29-7/7 | Taunton Herrings | New England League | Taunton, MA | |
| William Clark | clark-016wil | 1899 | 7/9-8/8 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Willie Clark | clark-013wil | 1899 | 81 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Win Clark | clark-012wil | 1899 | 4/19-7/5 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Dad Clarke | clarke001dad | 1899 | 5/4-6/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Fred Clarke | clarke002fre | 1899 | 149 g. | Louisville | National League | Louisville, KY | |
| Henry Clarke | clarke001hen | 1899 | U. of Michigan | College | , | ||
| Josh Clarke | clarke002jos | 1899 | 4/28-5/4 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| William Clarke | clarke004wil | 1899 | 60 g. | Boston | National League | Boston, MA | |
| Walter Clarkson | clarks001wal | 1899 | N. Attleboro MA | Independent | North Attleboro, MA | ||
| Fritz Clausen | clause001fri | 1899 | 6 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Harry Clayton | clayto001har | 1899 | 5/12-9/9 | Albany Senators | New York State League | Albany, NY | |
| Clements | clemen018--- | 1899 | 5/12 | Taunton Herrings | New England League | Taunton, MA | |
| Bill Clements | clemen004wil | 1899 | 5/1-5/7 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Bill Clements | clemen004wil | 1899 | 5/27-9/16 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Jack Clements | clemen001jac | 1899 | 4 g. | Cleveland | National League | Cleveland, OH | |
| Elmer Cleveland | 1899 | 3 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| Thomas Clifford | cliffo001tho | 1899 | 17 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Thomas Clifford | cliffo001tho | 1899 | Quincy/Dubuque | Western Association | Dubuque, IA | ||
| Billy Clingman | clingm001wil | 1899 | 110 g. | Louisville | National League | Louisville, KY | |
| Henry Clinton | clinto001hen | 1899 | 6/9-6/21 | Newark Colts | Atlantic League | Newark, NJ | |
| Henry Clinton | clinto001hen | 1899 | 7/18-8/5+ | Norwich Witches | Connecticut State League | Norwich, CT | |
| James Clinton | clinto002jam | 1899 | 5/30-6/3 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Michael Cloonin | clooni001--- | 1899 | 5/24-7/27 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Richard Closson | closso001ric | 1899 | 5 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Bill Clymer | clymer001wil | 1899 | 4/27-8/5 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Bill Clymer | clymer001wil | 1899 | 8/19-9/9 | Kansas City Blues | Western League | Kansas City, MO | |
| George Cobb | cobb--003geo | 1899 | 19 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Jim Cockman | cockma001jam | 1899 | 4/27-8/5 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Jim Cockman | cockma001jam | 1899 | 8/9-8/29 | Buffalo Bisons | Western League | Buffalo, NY | |
| Coffee | coffee004--- | 1899 | 8/28-9/17 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Homer Coffman | coffma001h-- | 1899 | Findley | Independent | Findley, OH | ||
| Dick Cogan | cogan-001dic | 1899 | 4/27-8/6 | Newark Colts | Atlantic League | Newark, NJ | |
| Dick Cogan | cogan-001dic | 1899 | 8 g. | Chicago | National League | Chicago, IL | |
| Charles Cogswell | cogswe003cha | 1899 | 4/29-5/12 | Newark Colts | Atlantic League | Newark, NJ | |
| Charles Cogswell | cogswe003cha | 1899 | 5/23-5/26 | Portland Phenoms | New England League | Portland, ME | |
| Charles Cogswell | cogswe003cha | 1899 | 45 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Dory Cohen | cohen-001the | 1899 | Lyons NY | Independent | Lyons, NY | ||
| Tom Colcolough | colcol001tom | 1899 | -7/16 | 14 g. | New York | National League | New York, NY |
| Tom Colcolough | colcol001tom | 1899 | 7/1-7/8 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Coleman | colema002--- | 1899 | 8/6-8/16 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Percy Coleman | colema001per | 1899 | 4/18-7/5 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Percy Coleman | colema001per | 1899 | 7/15-7/29 | Buffalo Bisons | Western League | Buffalo, NY | |
| Percy Coleman | colema001per | 1899 | Jefferson City | Independent | Jefferson City, MO | ||
| Harry Colgan | colgan001har | 1899 | MLB Umpire | National League | , | ||
| Cap Collars | collar001cap | 1899 | 6/23-7/4 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Harry Colliflower | collif001har | 1899 | 7/21- | 23 g. | Cleveland | National League | Cleveland, OH |
| Billy Collins | 1899 | 24 g. | San Bernardino | Southern California League | San Bernardino, CA | ||
| Chub Collins | collin001chu | 1899 | 5 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Jimmy Collins | collin003jam | 1899 | 151 g. | Boston | National League | Boston, MA | |
| Richard Collins | collin006ric | 1899 | 36 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Jim Collopy | collop001jam | 1899 | 5/17-6/17+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Jim Collopy | collop001jam | 1899 | 6/28-9/9 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Charlie Comiskey | comisk001cha | 1899 | 5/30-6/26 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Bunk Congalton | congal001wil | 1899 | 63 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Bunk Congalton | congal001wil | 1899 | 7/29-9/11 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Miles Conklin | conkli001mil | 1899 | 43 g. | Chatham Reds | Canadian League | Chatham, ON | |
| Bert Conn | conn--001alb | 1899 | 5/2-9/8 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Ollie Conn | conn--001oli | 1899 | 4/17-5/8 | Austin Senators | Texas Association | Austin, TX | |
| Frank Connaughton | connau001fra | 1899 | out of O.B. | , | |||
| Jim Connor | connor001jim | 1899 | 69 g. | Chicago | National League | Chicago, IL | |
| Joe Connor | connor002jos | 1899 | 5/20-9/16 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Roger Connor | connor001rog | 1899 | 5/17-9/12 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Bill Connors | connor001wil | 1899 | 5/1-9/20 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Ed Connors | connor002edw | 1899 | 5/9 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Ed Connors | connor002edw | 1899 | 5/24-6/3 | Dayton Veterans | Interstate League | Dayton, OH | |
| Mackie Connors | connor001mac | 1899 | +6/7- | Umpire | CtSt | , | |
| Pat Conroy | conroy001pat | 1899 | 5/10-9/4 | Portland Phenoms | New England League | Portland, ME | |
| Red Conroy | conroy001red | 1899 | 5/17-6/9 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Red Conroy | conroy001red | 1899 | 6/14-6/17 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Red Conroy | conroy001red | 1899 | +6/19- | Umpire | CtSt | , | |
| Wid Conroy | conroy003wil | 1899 | 5/12-9/9 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Charles Conwell | conwel001cha | 1899 | 75 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Dan Coogan | coogan003dan | 1899 | 4/29-7/16 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Dan Coogan | coogan003dan | 1899 | 7/23-8/3 | Rome Romans | New York State League | Rome, NY | |
| Dan Coogan | coogan003dan | 1899 | 8/7-9/9 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Cook | cook--031--- | 1899 | 6/2-6/9 | Manchester Manchesters | New England League | Manchester, NH | |
| Cook | cook--009--- | 1899 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | ||
| Fred Cooke | cooke-001fre | 1899 | 41 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| Duff Cooley | cooley001duf | 1899 | 94 g. | Philadelphia | National League | Philadelphia, PA | |
| Mel Cooley | cooley001mel | 1899 | Enid OK | Independent | Enid, OK | ||
| Mel Cooley | cooley001mel | 1899 | Superior | Superior, NE | |||
| Jimmy Cooney | cooney002jim | 1899 | 5/4-8/9 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Fred Cooper | cooper001fre | 1899 | 13 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Jimmy Cooper | cooper002jam | 1899 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | ||
| Tom Cooper | cooper003tho | 1899 | 29 g. | London Cockneys | Canadian League | London, ON | |
| Tommy Cope | cope--001tho | 1899 | 75 g. | London Cockneys | Canadian League | London, ON | |
| Tommy Copeland | copela001tho | 1899 | +5/14+ | Evan.-People’s | Courier | Evansville, IN | |
| Corbett | corbet004--- | 1899 | 7/9 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Corbett | corbet006--- | 1899 | 7/11-7/12 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Teddy Corbett | corbet001edw | 1899 | +8/7+ | Seattle Rainiers | Independent | Seattle, WA | |
| Jack Corcoran | corcor001jac | 1899 | 5/17-8/1 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Phil Corcoran | corcor001phi | 1899 | 5/30-9/15 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Tommy Corcoran | corcor002tho | 1899 | 138 g. | Cincinnati | National League | Cincinnati, OH | |
| Corliss | corlis001--- | 1899 | 9/4 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Frank Corridon | corrid001fra | 1899 | 5/12-6/13 | Newport Colts | New England League | Newport, RI | |
| Frank Corridon | corrid001fra | 1899 | 6/19-8/8 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Frank Corridon | corrid001fra | 1899 | 8/11-9/9 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Francis Corrigan | corrig001f-- | 1899 | Waseca | Independent | Waseca, | ||
| Jack Corrigan | corrig002joh | 1899 | Waseca | Independent | Waseca, | ||
| Jack Corrigan | corrig002joh | 1899 | Pirestone | Independent | Pirestone, | ||
| George Corson | corson000geo | 1899 | Freeport WI | Independent | Freeport, WI | ||
| Costello | costel019--- | 1899 | 5/12-5/16 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Costello | costel008--- | 1899 | 7/1 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Daniel Costigan | costig001dan | 1899 | 8/8 | Taunton Herrings | New England League | Taunton, MA | |
| Henry Cote | cote--002hen | 1899 | 5/5-7/12 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Henry Cote | cote--002hen | 1899 | 7/14-9/20 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Cotter | cotter005--- | 1899 | 6/19-7/6 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Dan Cotter | cotter001dan | 1899 | 6/15-6/18 | Woonsocket | NE | Woonsocket, RI | |
| Danny Cotter | 1899 | , | |||||
| John Cotter | 1899 | Manhattan Col | College | , | |||
| Bill Coughlin | coughl001wil | 1899 | 4/27-8/5 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Bill Coughlin | coughl001wil | 1899 | 8/9- | 6 g. | Washington | National League | Washington, DC |
| Bill Coughlin | coughl001wil | 1899 | 8/27-9/9 | Kansas City Blues | Western League | Kansas City, MO | |
| John Counihan | counih001joh | 1899 | 5/10-6/6 | Portland Phenoms | New England League | Portland, ME | |
| John Counihan | counih001joh | 1899 | E. Douglass | Independent | East Douglass, | ||
| John Counihan | counih001joh | 1899 | 6/23-7/18 | Derby Lushers | Connecticut State League | Derby, CT | |
| Thomas Coursey | 1899 | , | |||||
| Thomas Coursey | 1899 | +5/24+ | Geneva NY | Independent | Geneva, NY | ||
| Kid Courtad | 1899 | 18 g. | San Diego Fullers | Southern California League | San Diego, CA | ||
| Ernie Courtney | courtn001edw | 1899 | 49 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Ernie Courtney | courtn001edw | 1899 | 28 g. | San Francisco A's | California League | San Francisco, CA | |
| George Courtney | courtn001geo | 1899 | 5/20-7/1 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| George Courtney | courtn001geo | 1899 | 7/10-9/16 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Patrick Cowan | cowan-001pat | 1899 | 8 g. | Woodstock Bains | Canadian League | Woodstock, ON | |
| Frank Cox | cox---003fra | 1899 | Umpire | CtSt | , | ||
| Ernest Crabill | crabil001ern | 1899 | 5/1-6/9 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Ernest Crabill | crabil001ern | 1899 | 6/30-7/29 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Ernest Crabill | crabil001ern | 1899 | 8/1-9/9 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| William Cram | 1899 | , | |||||
| Chick Crane | crane-001chi | 1899 | no g. | Dayton Veterans | Interstate League | Dayton, OH | |
| Chick Crane | crane-005--- | 1899 | 5/1-5/11 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Bill Cranston | cranst001wil | 1899-00 | Georgetown Univ | College | , | ||
| Charles Crate | crate-001cha | 1899 | 5/4-6/19 | Hartford Indians | Eastern League | Hartford, CT | |
| Charles Crate | crate-001cha | 1899 | 6/23-8/9+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Sam Crawford | crawfo001sam | 1899 | 43 g. | Chatham Reds | Canadian League | Chatham, ON | |
| Sam Crawford | crawfo001sam | 1899 | 7/8-7/17 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Sam Crawford | crawfo001sam | 1899 | 7/18-9/9 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Sam Crawford | crawfo001sam | 1899 | 9/10- | 31 g. | Cincinnati | National League | Cincinnati, OH |
| Dave Creamer | creame002dav | 1899 | Umpire | Calif | , | ||
| Pete Cregan | cregan001pet | 1899 | 9/8 | 1 g. | New York | National League | New York, NY |
| Lou Criger | criger001lou | 1899 | 77 g. | St. Louis | National League | St. Louis, MO | |
| Pat Crisham | crisha002pat | 1899 | 5/5- | 53 g. | Baltimore | National League | Baltimore, MD |
| Bill Cristall | crista001wil | 1899 | 32 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Bill Cristall | crista001wil | 1899 | Woodstock Bains | Canadian League | Woodstock, ON | ||
| John Criswell | criswe001joh | 1899 | 3/7/99- | Co. C, 8th PA VI | Span-Amer | , | |
| C.W. Crockett | crocke001c-- | 1899 | 6/20-9/5 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Davey Crockett | crocke001dan | 1899 | , | ||||
| Harry Croft | croft-001hen | 1899 | 5/19- | 2 g. | Louisville | National League | Louisville, KY |
| Harry Croft | croft-001hen | 1899 | 2 g. | Philadelphia | National League | Philadelphia, PA | |
| Harry Croft | croft-001hen | 1899 | 5/29-6/17 | Syracuse Stars | Eastern League | Syracuse, NY | |
| George Croll | croll-001geo | 1899 | 2 g. | Oakland Oaks | California League | Oakland, CA | |
| George Croll | croll-001geo | 1899 | 18 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| George Croll | croll-001geo | 1899 | 6 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Jack Cronin | cronin001joh | 1899 | 5 g. | Cincinnati | National League | Cincinnati, OH | |
| Jack Cronin | cronin001joh | 1899 | 4/29-9/11 | Detroit Tigers | Western League | Detroit, MI | |
| Leo Crosin | 1899 | Carbondale PA | Independent | Carbondale, PA | |||
| Cross | cross-009--- | 1899 | 5/17-5/18 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Cross | cross-006--- | 1899 | 7/2 | Oswego Grays | New York State League | Oswego, NY | |
| Frank Cross | cross-001fra | 1899 | 4/30-6/9 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Frank Cross | cross-001fra | 1899 | Geneva OH | Independent | Geneva, OH | ||
| Lave Cross | cross-001laf | 1899 | 38 g. | Cleveland | National League | Cleveland, OH | |
| Lave Cross | cross-001laf | 1899 | 103 g. | St. Louis | National League | St. Louis, MO | |
| Lem Cross | cross-001lem | 1899 | 4/29-6/11 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Lem Cross | cross-001lem | 1899 | 6 g. | Chatham Reds | Canadian League | Chatham, ON | |
| Lem Cross | cross-001lem | 1899 | 7/9-7/17 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Lem Cross | cross-001lem | 1899 | 7/23-8/14 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Monte Cross | cross-001mon | 1899 | 154 g. | Philadelphia | National League | Philadelphia, PA | |
| Crotty | crotty001--- | 1899 | 8/16 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Dan Crotty | crotty001dan | 1899 | Huntington IN | Independent | Huntington, IN | ||
| Charles Crowe | crowe-001cha | 1899 | 11 g. | London Cockneys | Canadian League | London, ON | |
| Charles Crowe | crowe-001cha | 1899 | 29 g. | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Billy Crowell | crowel001bil | 1899 | 4/17-6/6 | Houston Buffaloes | Texas Association | Houston, TX | |
| Billy Crowell | crowel001bil | 1899 | Brenham | Independent | Brenham, TX | ||
| Dick Crozier | crozie001j-- | 1899 | 8 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Dick Crozier | crozie001j-- | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| Louis Cuddy | cuddy-001lou | 1899 | no g. | New Haven Blues | Connecticut State League | New Haven, CT | |
| Louis Cuddy | cuddy-001lou | 1899 | Fordham Col | College | , | ||
| Charles Culver | culver002cha | 1899 | 5/18-5/26 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Cummings | cummin018--- | 1899 | 4/26-5/7 | Austin Senators | Texas Association | Austin, TX | |
| Cummings | cummin014--- | 1899 | 5/4-5/10 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Cy Cummings | cummin012--- | 1899 | Eastern AC | Independent | , | ||
| Cunha | 1899 | Yale Freshmen | College | , | |||
| Bert Cunningham | cunnin001ell | 1899 | 44 g. | Louisville | National League | Louisville, KY | |
| George Cuppy | cuppy-001geo | 1899 | 21 g. | St. Louis | National League | St. Louis, MO | |
| Walter Curley | curley001doc | 1899 | U. of Virginia | College | , | ||
| Walter Curley | curley001doc | 1899 | 6/19-9/9 | Springfield Ponies | Eastern League | Springfield, MA | |
| Walter Curley | curley001doc | 1899 | 9/12- | 10 g. | Chicago | National League | Chicago, IL |
| Sammy Curran | curran001sim | 1899 | Tufts College | College | , | ||
| Sammy Curran | curran001sim | 1899 | 6/16-9/4 | Manchester Manchesters | New England League | Manchester, NH | |
| Wes Curry | curry-001wes | 1899 | 4/30-5/9 | Umpire | East | , | |
| John Curtis | curtis002joh | 1899 | 5/10-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| John Curtis | curtis002joh | 1899 | 5/30-6/1 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| John Curtis | curtis002joh | 1899 | 6/2-6/28 | Pawtucket Colts | New England League | Pawtucket, RI | |
| John Curtis | curtis002joh | 1899 | 7/1-9/4 | Taunton Herrings | New England League | Taunton, MA | |
| Charlie Cushman | cushma001cha | 1899 | Green Bay | FoxRiver | Green Bay, WI | ||
| Ernest Cushman | cushma001ern | 1899 | 5/17-5/27 | Derby Lushers | Connecticut State League | Derby, CT | |
| Ernest Cushman | cushma001ern | 1899 | 7/29 | Derby Lushers | Connecticut State League | Derby, CT | |
| Cusisk | cusisk001--- | 1899 | 2 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Jack Cusisk | cusick001joh | 1899 | 5/17-9/16 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Cutter | cutter001--- | 1899 | 5/21-5/23 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Bill Dahlen | dahlen001wil | 1899 | 121 g. | Brooklyn | National League | Brooklyn, NY | |
| Daley | daley-004--- | 1899 | 5/12-5/30 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Eddie Daley | daley-001edw | 1899 | 5/12-8/19 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| George Dalrymple | dalrym001geo | 1899 | 42 g. | San Jose Brewers | California League | San Jose, CA | |
| George Dalrymple | dalrym001geo | 1899 | 40 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Daly | daly--012--- | 1899 | 6/12-6/14 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Tom Daly | daly--002tho | 1899 | 141 g. | Brooklyn | National League | Brooklyn, NY | |
| Bill Dammann | damman001bil | 1899 | 9 g. | Cincinnati | National League | Cincinnati, OH | |
| Bill Dammann | damman001bil | 1899 | 6/24-9/11 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Sam Damoth | damuth001sam | 1899 | preseason | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Sam Damoth | damuth001sam | 1899 | 30 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Sam Damoth | damuth001sam | 1899 | +9/14+ | Hastings | Independent | Hastings, MI | |
| Law Daniels | daniel002law | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| Pete Daniels | daniel003pet | 1899 | 15 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Pete Daniels | daniel003pet | 1899 | 7/23-7/30 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Pete Daniels | daniel003pet | 1899 | 7/31-8/27 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Harry Dannehower | danneh001j-- | 1899 | Phil.-P & R | Independent | Philadelphia, PA | ||
| E. J. Darby | 1899 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |||
| Thomas Dark | dark--001tho | 1899 | 15 g. | Woodstock Bains | Canadian League | Woodstock, ON | |
| Dan Daub | daub--002dan | 1899 | 4/28-7/3 | Buffalo Bisons | Western League | Buffalo, NY | |
| Ed Daubenbis | dauben001ed- | 1899 | 13 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Daupt | daupt-001--- | 1899 | 5/12-5/17 | Oswego Grays | New York State League | Oswego, NY | |
| Davey | davey-007--- | 1899 | Sea.-Alphas | s-pro | Seattle, WA | ||
| Davey | davey-007--- | 1899 | Seattle Rainiers | PugetSound | Seattle, WA | ||
| Elmer Davis | davis-002elm | 1899 | 5/16-6/17 | Schenectady Electricians | New York State League | Schenectady, NY | |
| George Davis | davis-015geo | 1899 | 109 g. | New York | National League | New York, NY | |
| Harry Davis | davis-006har | 1899 | 4/14- | 18 g. | Washington | National League | Washington, DC |
| Harry Davis | davis-006har | 1899 | 5/10-9/10 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Harry Davis | 1899 | +8/16+ | Parsons | Independent | Parsons, KS | ||
| Ira Davis | davis-008j-- | 1899 | 4/22-5/3 | 6 g. | New York | National League | New York, NY |
| Ira Davis | davis-008j-- | 1899 | 5/12-5/31 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Ira Davis | davis-008j-- | 1899 | 6/9 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Ira Davis | davis-008j-- | 1899 | 6/12-9/16 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Ira Davis | davis-008j-- | 1899 | 1 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Jim Davis | 1899 | 6/9-8/12 | Woodstock | Calif | Woodstock, CA | ||
| Lefty Davis | davis-001alf | 1899 | 5/6-9/11 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Pop Davis | davis-001pop | 1899 | 4/17-7/4 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Pop Davis | davis-001pop | 1899 | -8/5 | Atchison | Independent | Atchison, KS | |
| Pop Davis | davis-001pop | 1899 | 8/- | Iola | Independent | Iola, KS | |
| Lee Dawkins | dawkin001lev | 1899 | 4/16-6/3 | Houston Buffaloes | Texas Association | Houston, TX | |
| Lee Dawkins | dawkin001lev | 1899 | 6/5 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Lee Dawkins | dawkin001lev | 1899 | 6/6-6/10 | Austin Senators | Texas Association | Austin, TX | |
| Bill Day | day---001bil | 1899 | 5/10-8/7 | Brockton Shoemakers | New England League | Brockton, MA | |
| Bill Day | day---001bil | 1899 | 8/16-9/14 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| John Day | day---004joh | 1899 | g. | New York | National League | New York, NY | |
| Edward Deady | deady-001edw | 1899 | 33 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Edward Deady | deady-001edw | 1899 | Quincy/Dubuque | Western Association | Dubuque, IA | ||
| Edward Deady | deady-001edw | 1899 | 6/29-8/7 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Louis Deal | deal--001lou | 1899 | 5/20-9/16 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Beach Dean | dean--001bea | 1899 | 3 g. | Oakland Oaks | California League | Oakland, CA | |
| Jimmy Dean | dean--001jam | 1899 | 62 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Archie DeBaker | debake001art | 1899 | +6/11+ | Muskegon MI | Independent | Muskegon, MI | |
| George Decker | decker003geo | 1899 | 4/14-7/12 | 39 g. | Louisville | National League | Louisville, KY |
| George Decker | decker003geo | 1899 | 4 g. | Washington | National League | Washington, DC | |
| George Decker | decker003geo | 1899 | 7/20-7/31 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| John Deering | deerin001joh | 1899 | 8/10-9/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Jacob Deisel | deisel001jac | 1899 | 6/6-6/22 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| John Deitrich | deitri001joh | 1899 | +7/12 | Umpire | CtSt | , | |
| John Deitrich | deitri001joh | 1899 | 7/13-7/14 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Ed Delahanty | delaha001edw | 1899 | 146 g. | Philadelphia | National League | Philadelphia, PA | |
| Jim Delahanty | delaha001jam | 1899 | 4/27-6/22 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Joe Delahanty | delaha001jos | 1899 | 4/27-8/5 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Tom Delahanty | delaha001tho | 1899 | 4/27-7/4 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Delaney | delane005--- | 1899 | 6/12 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Bill Delaney | delane001bil | 1899 | Canton OH | Independent | Canton, OH | ||
| Eddie Delaney | delane002edw | 1899 | 5/12-5/20 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Eddie Delaney | delane002edw | 1899 | 5/22-6/2 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Eddie Delaney | delane002edw | 1899 | 7/7+ | Ilion | Independent | Ilion, NY | |
| James Delaney | delane002edw | 1899 | Cortland Wagonmakers | New York State League | Cortland, NY | ||
| Jimmy Delaney | delane004jam | 1899 | 12 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Mickey Delaney | delane002mic | 1899 | +5/20-6/17 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Mickey Delaney | delane002mic | 1899 | 6/21-9/16 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Chris. Delescamp | delesc001chr | 1899 | +6/15+ | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Edward Demills | demill001edw | 1899 | Wallingford | Independent | Wallingford, CT | ||
| Edward Demills | demill001edw | 1899 | 7/19-7/20 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Demont | demont001--- | 1899 | 1 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Gene DeMontreville | demont001eug | 1899 | 82 g. | Chicago | National League | Chicago, IL | |
| Gene DeMontreville | demont001eug | 1899 | 60 g. | Baltimore | National League | Baltimore, MD | |
| Jimmy Dennie | dennie001jim | 1899 | 20 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Jerry Denny | denny-001jer | 1899 | 5/17-9/16 | Derby Lushers | Connecticut State League | Derby, CT | |
| Tom Denny | 1899 | +8/16+ | Parsons | Independent | Parsons, KS | ||
| Roger Denzer | denzer001rog | 1899 | 4/28-9/10 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Billy Derwin | derwin001wil | 1899 | 5/17-8/18 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Charles DeSaulles | 1899 | Yale University | College | , | |||
| W.H. Detmers | detmer000wh- | 1899 | +6/12+ | Brown University | College | , | |
| William Devereaux | devere001wil | 1899 | 83 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Phil Devoin | devoin001phi | 1899 | 1 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Charlie Dexter | dexter002cha | 1899 | 81 g. | Louisville | National League | Louisville, KY | |
| Bert Dick | 1899 | +8/16+ | Parsons | Independent | Parsons, KS | ||
| William Diggins | diggin001wil | 1899 | 5/1-9/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Pat Dillard | dillar002pat | 1899 | 4/27-9/11 | Detroit Tigers | Western League | Detroit, MI | |
| Frank Dillon | dillon001fra | 1899 | 4/27-7/3 | Scranton Miners | Atlantic League | Scranton, PA | |
| Frank Dillon | dillon001fra | 1899 | 7/4-9/5 | Buffalo Bisons | Western League | Buffalo, NY | |
| Frank Dillon | dillon001fra | 1899 | 9/8- | 30 g. | Pittsburgh | National League | Pittsburgh, PA |
| Bill Dinneen | dinnee001wil | 1899 | 37 g. | Washington | National League | Washington, DC | |
| William Dinsmore | dinsmo001wil | 1899 | 5/10-5/31 | Newport Colts | New England League | Newport, RI | |
| Eddie Dixon | dixon-002edw | 1899 | 4/28-5/14 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Eddie Dixon | dixon-002edw | 1899 | 6/17-7/4 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Eddie Dixon | dixon-002edw | 1899 | 7/16-9/11 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Dobbs | dobbs-002--- | 1899 | Indianapolis Hoosiers | Western League | Indianapolis, IN | ||
| John Dobbs | dobbs-001joh | 1899 | 5/1-9/19 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| J.M. Dodge | dodge-000jm- | 1899 | San Diego Fullers | Southern California League | San Diego, CA | ||
| Ed Doheny | doheny001edw | 1899 | 36 g. | New York | National League | New York, NY | |
| Jack Doherty | dohert001joh | 1899 | +5/30-9/16 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| James Doherty | dohert004jam | 1899 | Morris Plains NJ | Independent | Morris Plains, NJ | ||
| Mike Doherty | dohert001mic | 1899 | 4/27-7/4 | Scranton Miners | Atlantic League | Scranton, PA | |
| Mike Doherty | dohert001mic | 1899 | 7/16-8/5 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Mike Doherty | dohert001mic | 1899 | +8/10-9/13+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Cozy Dolan | dolan-001pat | 1899 | 4/29-9/9 | Springfield Ponies | Eastern League | Springfield, MA | |
| Cozy Dolan | dolan-001pat | 1899 | 9/12-9/14 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Joe Dolan | dolan-001jos | 1899 | 4/27-8/4 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Joe Dolan | dolan-001jos | 1899 | 8/- | 61 g. | Philadelphia | National League | Philadelphia, PA |
| John Dolan | dolan-002joh | 1899 | 5/11-6/7 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| John Dolan | dolan-002joh | 1899 | 8/12-9/17 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| George Dommel | dommel001geo | 1899 | Lanc.-Active | Independent | Lancaster, PA | ||
| William Dommel | dommel001wil | 1899 | Lanc.-Active | Independent | Lancaster, PA | ||
| Jiggs Donahue | donahu001joh | 1899 | 5/1-815 | Dayton Veterans | Interstate League | Dayton, OH | |
| Jiggs Donahue | donahu001joh | 1899 | 8/18-9/20 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Red Donahue | donahu001fra | 1899 | 35 g. | Philadelphia | National League | Philadelphia, PA | |
| She Donahue | donahu002cha | 1899 | 6/20 | Oswego Grays | New York State League | Oswego, NY | |
| She Donahue | donahu002cha | 1899 | 7/25-9/9 | Oswego Grays | New York State League | Oswego, NY | |
| Tim Donahue | donahu001tim | 1899 | 92 g. | Chicago | National League | Chicago, IL | |
| Donelly | donell001--- | 1899 | 2 g. | Woodstock Bains | Canadian League | Woodstock, ON | |
| Mike Donlin | donlin001mic | 1899 | 29 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Mike Donlin | donlin001mic | 1899 | 7/19- | 66 g. | St. Louis | National League | St. Louis, MO |
| Frank Donnelly | donnel002fra | 1899 | 37 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Frank Donnelly | donnel002fra | 1899 | 6/28-9/17 | Dayton Veterans | Interstate League | Dayton, OH | |
| Jim Donnelly | donnel002jim | 1899 | 6/8-6/12 | Syracuse Stars | Eastern League | Syracuse, NY | |
| August Donohoo | 1899 | U. Alabama | College | , | |||
| Donovan | donova022--- | 1899 | 5/1-5/3 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Bill Donovan | donova004wil | 1899 | 4/29-7/22 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Bill Donovan | donova004wil | 1899 | 5 g. | Brooklyn | National League | Brooklyn, NY | |
| Fred Donovan | donova002fre | 1899 | 5/2-5/20 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Fred Donovan | donova002fre | 1899 | 6/2-8/25 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Jack Donovan | donova001jac | 1899 | 71 g. | Oakland Oaks | California League | Oakland, CA | |
| Patsy Donovan | donova001pat | 1899 | 122 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Tom Donovan | donova002tho | 1899 | +5/20-6/10 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Tom Donovan | donova002tho | 1899 | 6/15-7/30 | Newark Colts | Atlantic League | Newark, NJ | |
| Tom Donovan | donova002tho | 1899 | 8/18-9/10 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Red Dooin | dooin-001cha | 1899 | 36 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Red Dooin | dooin-001cha | 1899 | 6/30-7/11 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Red Dooin | dooin-001cha | 1899 | 7/28-7/30 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Red Dooin | dooin-001cha | 1899 | 7/31-8/3 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Dooley | dooley002--- | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Charles Dooley | dooley001cha | 1899 | 4/29-9/10 | Montreal Royals | Eastern League | Montreal, QC | |
| Mickey Doolin | doolan001mic | 1899-04 | Buckn./Villanova | College | , | ||
| Doran | doran-004--- | 1899 | 9/16 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Joseph Doran | doran-001jos | 1899 | Meri.-West Ends | Independent | Meriden, CT | ||
| Luke Dorsey | dorsey001luk | 1899 | +5/20-7/15 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Luke Dorsey | dorsey001luk | 1899 | 7/17-7/18 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Luke Dorsey | dorsey001luk | 1899 | Amesbury | Independent | Amesbury, MA | ||
| Luke Dorsey | dorsey001luk | 1899 | 8/9-8/26 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Luke Dorsey | dorsey001luk | 1899 | 8/29-9/16 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Herm Doscher | dosche001her | 1899 | 4/29-7/18 | Umpire | East | , | |
| Jack Doscher | dosche001joh | 1899-00 | St. John's(Fordham) | College | , | ||
| Patsy Dougherty | doughe002pat | 1899 | Homestead | Independent | Homestead, PA | ||
| Patsy Dougherty | doughe002pat | 1899 | 8/17-9/16 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| John Douglas | dougla004joh | 1899 | 6/3 | Austin Senators | Texas Association | Austin, TX | |
| Charlie Douglass | dougla006cha | 1899 | 5/19-6/3 | Houston Buffaloes | Texas Association | Houston, TX | |
| Klondike Douglass | dougla004wil | 1899 | 77 g. | Philadelphia | National League | Philadelphia, PA | |
| Tommy Dowd | dowd--001tho | 1899 | 147 g. | Cleveland | National League | Cleveland, OH | |
| Joe Dowie | dowie-001joe | 1899 | 41 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| Joe Dowie | dowie-001joe | 1899 | 6/4-7/5 | Houston Buffaloes | Texas Association | Houston, TX | |
| Pete Dowling | dowlin001hen | 1899 | 35 g. | Louisville | National League | Louisville, KY | |
| Jim Downey | downey002jam | 1899 | 5/1-5/25 | Dayton Veterans | Interstate League | Dayton, OH | |
| Jim Downey | downey002jam | 1899 | 6/16-9/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Downie | 1899 | 22 g. | Dayton Veterans | Interstate League | Dayton, OH | ||
| Doyle | doyle-032--- | 1899 | +6/22+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Charles Doyle | doyle-002cha | 1899 | 80 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Jack Doyle | doyle-002joh | 1899 | 119 g. | New York | National League | New York, NY | |
| William Drake | 1899 | Findley | Independent | Findley, OH | |||
| Jake Drauby | drauby001jak | 1899 | 4/27-8/4 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Jack Drennan | drenna001kir | 1899 | 67 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Bobby Drew | drew--001edw | 1899 | 5/17-9/16 | New London Whalers | Connecticut State League | New London, CT | |
| Frank Drill | drill-000fra | 1899-03 | Georgetown Col. | College | , | ||
| Vianello Drinkwater | drinkw001via | 1899 | 5/12- | Taunton Herrings | New England League | Taunton, MA | |
| Vianello Drinkwater | drinkw001via | 1899 | -9/4 | Portland Phenoms | New England League | Portland, ME | |
| Daniel Driscoll | drisco001dan | 1899 | Umpire | CtSt | , | ||
| Daniel Driscoll | drisco001dan | 1899 | 7/18-8/2 | Norwich Witches | Connecticut State League | Norwich, CT | |
| J.F. Drott | drott-001j-- | 1899 | Mansfield Haymakers | Interstate League | Mansfield, OH | ||
| Ferd Drumm | drumm-001fer | 1899 | 9/6-9/17 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Jim Drumm | drumm-001jim | 1899 | 22 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Tom Drummy | drummy001tom | 1899 | 4 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Tom Drummy | drummy001tom | 1899 | -8/2 | Emporia | Independent | Emporia, KS | |
| Tom Drummy | drummy001tom | 1899 | +8/27+ | Sioux City | Independent | Sioux City, IA | |
| Hugh Duffy | duffy-001hug | 1899 | 147 g. | Boston | National League | Boston, MA | |
| John Duffy | duffy-003joh | 1899 | 5/17-7/15 | New Haven Blues | Connecticut State League | New Haven, CT | |
| John Duffy | duffy-003joh | 1899 | 7/20-9/9 | Albany Senators | New York State League | Albany, NY | |
| Dan Dugdale | dugdal001dan | 1899 | Seattle Rainiers | PugetSoun | Seattle, WA | ||
| Bill Duggleby | duggle001wil | 1899 | 4/29-9/10 | Montreal Royals | Eastern League | Montreal, QC | |
| Dunbar | dunbar005--- | 1899 | 7/21 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Jim Duncan | duncan001jim | 1899 | 4/27-6/10 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Jim Duncan | duncan001jim | 1899 | 6/13-7/15 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Jim Duncan | duncan001jim | 1899 | 7/18- | 15 g. | Washington | National League | Washington, DC |
| Jim Duncan | duncan001jim | 1899 | 31 g. | Cleveland | National League | Cleveland, OH | |
| Gus Dundon | dundon001aug | 1899 | 4/27-7/31 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Gus Dundon | dundon001aug | 1899 | 8/14-9/9 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Sam Dungan | dungan001sam | 1899 | 4/27-9/11 | Detroit Tigers | Western League | Detroit, MI | |
| Frank Dunham | dunham001fra | 1899 | Marlborough MA | Independent | Marlborough, MA | ||
| Frank Dunham | dunham001fra | 1899 | 7/3-7/15 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Davy Dunkle | dunkle001edw | 1899 | 4 g. | Washington | National League | Washington, DC | |
| Davy Dunkle | dunkle001edw | 1899 | 4/29-9/10 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Bill Dunleavy | dunlea001wil | 1899 | 88 g. | Oakland Oaks | California League | Oakland, CA | |
| Jack Dunleavy | dunlea001joh | 1899 | 8/16-8/18 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Dunn | 1899 | 2 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| Bert Dunn | dunn--005ber | 1899 | 4/16-5/18 | Houston Buffaloes | Texas Association | Houston, TX | |
| Bert Dunn | dunn--005ber | 1899 | 6/11-6/25 | Houston Buffaloes | Texas Association | Houston, TX | |
| Bert Dunn | 1899 | +8/16+ | Parsons | Independent | Parsons, KS | ||
| Jack Dunn | dunn--005joh | 1899 | 43 g. | Brooklyn | National League | Brooklyn, NY | |
| Robert Durnbaugh | durnba001rob | 1899 | 6/19-9/15 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Ike Durrett | durret001isa | 1899 | 5/1-5/23 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Ike Durrett | durret001isa | 1899 | 5/30- | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Ike Durrett | durret001isa | 1899 | 7/12-9/20 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Dwyer | dwyer-011--- | 1899 | 5/10-6/12 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Frank Dwyer | dwyer-001fra | 1899 | 5 g. | Cincinnati | National League | Cincinnati, OH | |
| Frank Dwyer | dwyer-001fra | 1899 | 64 g. | MLB Umpire | National League | , | |
| Billy Dyer | dyer--001wil | 1899 | +6/17+ | Holy Cross Col. | College | , | |
| Eagan | eagan-013--- | 1899 | 7/7-7/10 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Bill Eagan | eagan-001bil | 1899 | 4/27-7/30 | Detroit Tigers | Western League | Detroit, MI | |
| Edward Eagan | eagan-001edw | 1899 | 5/10-6/8 | Stratford Poets | Canadian League | Stratford, ON | |
| Jack Eagan | eagan-001jac | 1899 | 6/17 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Jack Eagan | eagan-001jac | 1899 | 8/1-8/4 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Pete Eagan | eagan-001pat | 1899 | 4/27-7/4 | Scranton Miners | Atlantic League | Scranton, PA | |
| Pete Eagan | eagan-001pat | 1899 | 7/14-9/9 | Utica Pentups | New York State League | Utica, NY | |
| Truck Eagan | eagan-001cha | 1899 | 8 g. | San Jose Brewers | California League | San Jose, CA | |
| Truck Eagan | eagan-001cha | 1899 | 73 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Bill Eagle | eagle-001bil | 1899 | 5/29-6/1 | Taunton Herrings | New England League | Taunton, MA | |
| Howard Earl | earl--002how | 1899 | 5/12-9/9 | Utica Pentups | New York State League | Utica, NY | |
| Billy Earle | earle-001bil | 1899 | Richmond IN | Independent | Richmond, IN | ||
| Tom Early | 1899 | 13 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Mal Eason | eason-001mal | 1899 | Grove City Col. | College | , | ||
| Mal Eason | eason-001mal | 1899 | 6/28-7/28 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Mal Eason | eason-001mal | 1899 | 8/4-9/9 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Claude East | east--002wal | 1899 | +8/16+ | Parsons | Independent | Parsons, KS | |
| Chris Eastman | eastma001chr | 1899 | +8/27+ | Flandreau | Independent | Flandreau, SD | |
| Easton | easton002--- | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Hi Ebright | ebrigh001hi- | 1899 | Umpire | IntSt | , | ||
| Fred Eddy | eddy--001fre | 1899 | 56 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Fred Eddy | eddy--001fre | 1899 | Woodstock Bains | Canadian League | Woodstock, ON | ||
| Fred Eddy | eddy--001fre | 1899 | 9/4 | Detroit Tigers | Western League | Detroit, MI | |
| George Edgar | edgar-001geo | 1899 | 8/5 | Portland Phenoms | New England League | Portland, ME | |
| Edson | edson-001--- | 1899 | 7/17 | Portland Phenoms | New England League | Portland, ME | |
| Harry Edwards | 1899 | 1 g. | San Diego Fullers | Southern California League | San Diego, CA | ||
| Jack Egan | egan--001rip | 1899 | 4/29-7/15 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Jack Egan | egan--001rip | 1899 | Umpire | NE | , | ||
| Joseph Egan | egan--001jos | 1899 | 5/11-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Joseph Egan | egan--001jos | 1899 | 5/30-6/1 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Rip Egan | egan--002joh | 1899 | 4/30-8/23 | Kansas City Blues | Western League | Kansas City, MO | |
| Charles Eggert | eggert001cha | 1899 | 5/12-5/13 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Red Ehret | ehret-001phi | 1899 | no g. | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Harry Eichler | eichle001har | 1899 | Saginaw MI | Independent | Saginaw, MI | ||
| Harry Eichler | eichle001har | 1899 | Youngstown Little Giants | Interstate League | Youngstown, OH | ||
| Kid Elberfeld | elberf001nor | 1899 | 4/27-8/1 | Detroit Tigers | Western League | Detroit, MI | |
| Kid Elberfeld | elberf001nor | 1899 | 41 g. | Cincinnati | National League | Cincinnati, OH | |
| Elger | elger-001--- | 1899 | Hobart College | College | , | ||
| Elger | elger-001--- | 1899 | 5/24-5/27 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Claude Elliott | elliot001cla | 1899 | 1 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Ben Ellis | ellis-003ben | 1899 | 5/12-9/9 | Utica Pentups | New York State League | Utica, NY | |
| Charles Elsey | elsey-001cha | 1899 | 33 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Charles Elsey | elsey-001cha | 1899 | 8/2-8/3 | Kansas City Blues | Western League | Kansas City, MO | |
| Charles Elsey | elsey-001cha | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | ||
| Bert Eltom | eltom-001alb | 1899 | 69 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Bert Eltom | eltom-001alb | 1899 | Woodstock Bains | Canadian League | Woodstock, ON | ||
| Bones Ely | ely---001wil | 1899 | 139 g. | Pittsburgh | National League | Pittsburgh, PA | |
| George Engel | engel-002geo | 1899 | , | ||||
| George England | englan001geo | 1899 | Canadian | , | |||
| George England | englan001geo | 1899 | 7/13-8/3 | Umpire | NYSt | , | |
| Darby Enroughty | darby-001e-- | 1899 | 5/17-7/18+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Gus Erickson | ericks001gus | 1899 | 8/12-8/31 | Dayton Veterans | Interstate League | Dayton, OH | |
| Edward Ernest | ernest001edw | 1899 | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | ||
| Duke Esper | esper-001duk | 1899 | 4/28-7/28 | Hartford Indians | Eastern League | Hartford, CT | |
| Dude Esterbrook | esterb001dud | 1899 | Staten Island | Independent | Staten Island, NY | ||
| Tony Esterquest | esterq001ant | 1899 | 35 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Frank Eustace | eustac003fra | 1899 | 5/2-6/19 | Buffalo Bisons | Western League | Buffalo, NY | |
| Frank Eustace | eustac003fra | 1899 | 6/20-7/17 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Frank Eustace | eustac003fra | 1899 | 7/18-7/27 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Frank Eustace | eustac003fra | 1899 | 8/18-9/2 | Hartford Indians | Eastern League | Hartford, CT | |
| Roy Evans | evans-001roy | 1899 | 7 g. | Washington | National League | Washington, DC | |
| Roy Evans | evans-001roy | 1899 | 4/29-9/8 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Bill Everitt | everet001wil | 1899 | 136 g. | Chicago | National League | Chicago, IL | |
| Evers | evers-003--- | 1899 | Albany Senators | New York State League | Albany, NY | ||
| Jack Evers | evers-001joh | 1899 | 5/10-5/30 | Brockton Shoemakers | New England League | Brockton, MA | |
| Jack Evers | evers-001joh | 1899 | 5/31 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| Jack Evers | evers-001joh | 1899 | 8/4-8/8 | Albany Senators | New York State League | Albany, NY | |
| Bert Everson | everso001a-- | 1899 | 5/11-8/7 | Brockton Shoemakers | New England League | Brockton, MA | |
| Bob Ewing | ewing-001geo | 1899 | 5/1-9/17 | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Buck Ewing | ewing-001buc | 1899 | Cincinnati | National League | Cincinnati, OH | ||
| Cal Ewing | ewing-001cal | 1899 | Oakland Oaks | California League | Oakland, CA | ||
| Elwood Eyler | eyler-001elw | 1899 | 1 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Elwood Eyler | eyler-001elw | 1899 | 5/3- | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Charles Faatz | faatz-001cha | 1899 | 5/12-6/23 | Albany Senators | New York State League | Albany, NY | |
| Charles Faatz | faatz-001cha | 1899 | Palmyra | Independent | Palmyra, NY | ||
| Charles Faatz | faatz-001cha | 1899 | 8/24-9/9 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Cy Falkenberg | falken001fre | 1899-02 | U. of Illinois | College | , | ||
| Ben Farnham | farnha001ben | 1899 | 5/17-7/11 | Derby Lushers | Connecticut State League | Derby, CT | |
| Farr | 1899 | 16 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| Duke Farrell | farrel002cha | 1899 | 5 g. | Washington | National League | Washington, DC | |
| Duke Farrell | farrel002cha | 1899 | 80 g. | Brooklyn | National League | Brooklyn, NY | |
| Jack Farrell | farrel004jac | 1899 | 5/15-5/30 | Manchester Manchesters | New England League | Manchester, NH | |
| Jack Farrell | farrel004jac | 1899 | 9/4 | Portland Phenoms | New England League | Portland, ME | |
| John Farrell | farrel006joh | 1899 | 5/1-9/20 | New Castle Quakers | Interstate League | New Castle, PA | |
| Shorty Farrell | farrel001sho | 1899 | 3 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| W.E. Farrow | farrow001w-- | 1899 | 20 g. | San Diego Fullers | Southern California League | San Diego, CA | |
| Faulkner | faulkn003--- | 1899 | 6/27 | Newark Colts | Atlantic League | Newark, NJ | |
| Clay Fauver | fauver001cla | 1899 | 9/7 | 1 g. | Louisville | National League | Louisville, KY |
| Eddie Feehan | feehan001edw | 1899 | 9 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Eddie Feehan | feehan001edw | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| Harry Felix | felix-001har | 1899 | 5/1-9/9 | Montreal Royals | Eastern League | Montreal, QC | |
| Bill Fenner | fenner000bil | 1899 | Tarboro | Independent | Tarboro, NC | ||
| Ferguson | fergus004--- | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Bob Ferguson | fergus002bob | 1899 | 1 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Bob Ferguson | fergus002bob | 1899 | 2 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Charlie Ferguson | fergus002cha | 1899 | 5/2-9/16 | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Frank Ferguson | fergus001fra | 1899 | 30 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Hobe Ferris | ferris001alb | 1899 | 5/10-8/8 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Hobe Ferris | ferris001alb | 1899 | 8/29-9/16 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Cy Ferry | ferry-001alf | 1899 | 5/1-5/9 | Springfield Ponies | Eastern League | Springfield, MA | |
| Cy Ferry | ferry-001alf | 1899 | 6/18-6/24 | Albany Senators | New York State League | Albany, NY | |
| Alex Ferson | ferson001ale | 1899 | 7/1 | Manchester Manchesters | New England League | Manchester, NH | |
| Ed Fertsch | fertsc001edw | 1899 | 4/28-8/4 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Ed Fertsch | fertsc001edw | 1899 | 8/11-9/5 | Buffalo Bisons | Western League | Buffalo, NY | |
| C. Fessel | fessel001--- | 1899 | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | ||
| C. Fessel | fessel001--- | 1899 | San Jose Brewers | California League | San Jose, CA | ||
| Jim Field | field-001jim | 1899 | 4/27-6/14 | Newark Colts | Atlantic League | Newark, NJ | |
| Jim Field | field-001jim | 1899 | 6/19-8/7 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Fields | fields011--- | 1899 | 5/12-5/20 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Fields | fields013--- | 1899 | 5/17-5/20 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Jack Fifield | fifiel001jac | 1899 | 14 g. | Philadelphia | National League | Philadelphia, PA | |
| Jack Fifield | fifiel001jac | 1899 | 7 g. | Washington | National League | Washington, DC | |
| Jack Fifield | fifiel001jac | 1899 | 7/24-8/13 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Frank Figgemeier | figgem002fra | 1899 | 5/2-9/20 | New Castle Quakers | Interstate League | New Castle, PA | |
| Finley | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Finn | finn--001--- | 1899 | 8/5 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Billy Finn | finn--001wil | 1899 | MiSt | , | |||
| Mickey Finn | finn--001duk | 1899 | 5/10-9/7 | Newport Colts | New England League | Newport, RI | |
| Finnan | finnan001--- | 1899 | 5/14-5/15 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Leo Fishel | fishel001leo | 1899 | 5/3 | 1 g. | New York | National League | New York, NY |
| Leo Fishel | fishel001leo | 1899 | W.NewYorkField | Independent | , | ||
| Leo Fishel | fishel001leo | 1899 | 6/9-7/4 | New London Whalers | Connecticut State League | New London, CT | |
| Leo Fishel | fishel001leo | 1899 | Ilion | Independent | Ilion, NY | ||
| Leo Fishel | fishel001leo | 1899 | +8/26 | Albany Roches | Independent | Albany, NY | |
| Leo Fishel | fishel001leo | 1899 | 8/30 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Al Fisher | fisher001al- | 1899 | 34 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Al Fisher | fisher001al- | 1899 | -9/17 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Chauncey Fisher | fisher005cha | 1899 | 4/29-9/10 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| F. Fisher | fisher000f-- | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Harry Fisher | fisher004har | 1899 | Homestead | Independent | Homestead, PA | ||
| Ike Fisher | fisher001ike | 1899 | 5/2-9/11 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Charlie Fissell | fissel001cha | 1899 | 6 g. | San Jose Brewers | California League | San Jose, CA | |
| Charlie Fissell | fissel001cha | 1899 | 2 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| John Fitzgerald | fitzge009joh | 1899 | Umpire | CtSt | , | ||
| Billy Fitzmaurice | fitzma001wil | 1899 | 5/10-9/4 | Manchester Manchesters | New England League | Manchester, NH | |
| Fitzpatrick | fitzpa007--- | 1899 | 9/17 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Frank Fitzpatrick | fitzpa001fra | 1899 | 5/17-9/16 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Tom Fitzpatrick | fitzpa001tho | 1899 | 48 g. | San Francisco A's | California League | San Francisco, CA | |
| P.B. Flaherty | flaher001p-- | 1899 | 5/22-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| P.B. Flaherty | flaher001p-- | 1899 | 5/30 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Pat Flaherty | flaher005pat | 1899 | 35 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Pat Flaherty | flaher005pat | 1899 | Muncie/Crawford | Indiana-Illinois League | Crawford, IN | ||
| Patsy Flaherty | flaher004pat | 1899 | 5/12-5/17 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Patsy Flaherty | flaher004pat | 1899 | 5/29-6/10 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Patsy Flaherty | flaher004pat | 1899 | 6/13-6/22 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Patsy Flaherty | flaher004pat | 1899 | 7/8-8/5 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Patsy Flaherty | flaher004pat | 1899 | 9/8- | 7 g. | Louisville | National League | Louisville, KY |
| Ed Flanagan | flanag001ed- | 1899 | 6/12-7/15 | New Haven Blues | Connecticut State League | New Haven, CT | |
| John Flanagan | flanag003joh | 1899 | 6/1-7/4 | Scranton Miners | Atlantic League | Scranton, PA | |
| Thomas Flanagan | flanag001tho | 1899 | 5/11-9/4 | Portland Phenoms | New England League | Portland, ME | |
| Jack Flannery | flanne001joh | 1899 | +8/12+ | Butte | Independent | Butte, MT | |
| Fleming | flemin008--- | 1899 | 5/25-5/28 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Tom Fleming | flemin003tho | 1899 | 4/27-6/17 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Tom Fleming | flemin003tho | 1899 | 7/13-7/20 | Newport Colts | New England League | Newport, RI | |
| Tom Fleming | flemin003tho | 1899 | 7/21-7/24 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Tom Fleming | flemin003tho | 1899 | 7/27-9/4 | Newport Colts | New England League | Newport, RI | |
| Tom Fleming | flemin003tho | 1899 | 9/5-9/10 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Tom Fleming | flemin003tho | 1899 | 9/19- | 22 g. | New York | National League | New York, NY |
| Elmer Flick | flick-001elm | 1899 | 4/14- | 127 g. | Philadelphia | National League | Philadelphia, PA |
| Tim Flood | flood-001tim | 1899 | 4/30-9/17 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Tim Flood | flood-001tim | 1899 | 9/24- | 10 g. | St. Louis | National League | St. Louis, MO |
| Jack Flournoy | flourn001joh | 1899 | 5/1-9/20 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Flynn | flynn-018--- | 1899 | 8/30 | Springfield Ponies | Eastern League | Springfield, MA | |
| George Flynn | flynn-003geo | 1899 | 4/27-9/11 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Silent Fogarty | 1899 | Ilion | Independent | Ilion, NY | |||
| Charles Foley | foley-001cha | 1899 | 5/12 | Brockton Shoemakers | New England League | Brockton, MA | |
| Frank Foley | foley-002fra | 1899 | 2 g. | Oakland Oaks | California League | Oakland, CA | |
| George Foley | foley-001geo | 1899 | 24 g. | San Jose Brewers | California League | San Jose, CA | |
| Patrick Foley | foley-002pat | 1899 | 5/11-9/4 | Newport Colts | New England League | Newport, RI | |
| Patrick Foley | foley-002pat | 1899 | Meriden Silverites | Connecticut State League | Meriden, CT | ||
| Charlie Folger | 1899 | Hobart College | College | , | |||
| Charlie Folger | 1899 | Geneva NY | Independent | Geneva, NY | |||
| Thomas Folger | 1899 | Geneva NY | Independent | Geneva, NY | |||
| Robert Footes | footes000rob | 1899 | Chicago Unions | Independent | Chicago, IL | ||
| Eddie Ford | ford--001edw | 1899 | 5 g. | Oakland Oaks | California League | Oakland, CA | |
| Eddie Ford | ford--001edw | 1899 | 1 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Foreman | forema002--- | 1899 | 5/20-6/12 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Frank Foreman | forema001fra | 1899 | 4/29-9/5 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| John Foreman | forema001bro | 1899 | Gettysburg PA | Independent | Gettysburg, PA | ||
| Clarence Foster | foster001cla | 1899 | 6/19-7/10 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Clarence Foster | foster001cla | 1899 | 84 g. | New York | National League | New York, NY | |
| Clarence Foster | foster001cla | 1899 | 7/22-8/4 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Reddy Foster | foster001red | 1899 | 5/17-7/18 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Reddy Foster | foster001red | 1899 | 7/21-8/22 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Reddy Foster | foster001red | 1899 | 8/29-9/16 | New London Whalers | Connecticut State League | New London, CT | |
| Reddy Foster | foster001red | 1899 | 6/9-7/4 | New London Whalers | Connecticut State League | New London, CT | |
| Frank Foutz | foutz-001fra | 1899 | 5/20-9/16 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Fox | fox---015--- | 1899 | 7/2-7/5 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Bill Fox | fox---006wil | 1899 | 5/12-9/9 | Rome Romans | New York State League | Rome, NY | |
| George Fox | fox---001pad | 1899 | 5/5-8/5 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| George Fox | fox---001pad | 1899 | - 9/7 | 13 g. | Pittsburgh | National League | Pittsburgh, PA |
| Jim Fox | fox---001jam | 1899 | +4/30+ | Guilford College | College | , | |
| William Fox | fox---009wil | 1899-00 | Holy Cross Col. | College | , | ||
| Thomas Franalap | franal001tho | 1899 | Mansfield Haymakers | Interstate League | Mansfield, OH | ||
| Francis | franci011--- | 1899 | 5/6-5/8 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Tom Francis | franci001tho | 1899 | 72 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Buck Francks | franck001cha | 1899 | 6 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Buck Francks | franck001cha | 1899 | 10 g. | Oakland Oaks | California League | Oakland, CA | |
| Buck Francks | franck001cha | 1899 | Umpire | Calif | , | ||
| Buck Francks | franck001cha | 1899 | 59 g. | London Cockneys | Canadian League | London, ON | |
| Charlie Frank | frank-003cha | 1899 | 4/27-7/17 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Charlie Frank | frank-003cha | 1899 | 7/18-7/27 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Charlie Frank | frank-003cha | 1899 | 8/14-8/27 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Cy Frank | frank-001cy- | 1899 | 5/12-7/30 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Cy Frank | frank-001cy- | 1899 | 8/5-8/11 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Fred Frank | frank-003fre | 1899 | 5/1-9/17 | Dayton Veterans | Interstate League | Dayton, OH | |
| Jim Franklin | frankl004jam | 1899 | 5/12-6/4 | Buffalo Bisons | Western League | Buffalo, NY | |
| Ralph Frary | frary-001ral | 1899 | 8/28-8/30 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Chick Fraser | fraser001cha | 1899 | 40 g. | Philadelphia | National League | Philadelphia, PA | |
| Frazer | frazer002--- | 1899 | 6/16-8/6 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Dotty Freck | freck-001cha | 1899 | 5/12-5/20 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Dotty Freck | freck-001cha | 1899 | Painesville OH | Independent | Painesville, OH | ||
| Lute Freeland | freela001lut | 1899 | Iola | Independent | Iola, KS | ||
| Buck Freeman | freema003joh | 1899 | 4/14- | 155 g. | Washington | National League | Washington, DC |
| William Frick | frick-001wil | 1899 | Palmyra | Independent | Palmyra, NY | ||
| Hon Fricken | fricke001ant | 1899 | 4/28-8/24 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Bill Friel | friel-001wil | 1899-00 | Niagara Univ. | College | , | ||
| Danny Friend | friend002dan | 1899 | 4/28-5/23 | Kansas City Blues | Western League | Kansas City, MO | |
| Danny Friend | friend002dan | 1899 | 5/29-7/6 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Danny Friend | friend002dan | 1899 | 7/10-9/11 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Charlie Frisbee | frisbe001cha | 1899 | 4/29-6/17 | Worcester Farmers | Eastern League | Worcester, MA | |
| Charlie Frisbee | frisbe001cha | 1899 | 6/22- | 42 g. | Boston | National League | Boston, MA |
| Charlie Frisbee | frisbe001cha | 1899 | 8/2-9/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Emil Frisk | frisk-001joh | 1899 | 4/28-8/19 | Detroit Tigers | Western League | Detroit, MI | |
| Emil Frisk | frisk-001joh | 1899 | 9/2- | 9 g. | Cincinnati | National League | Cincinnati, OH |
| Joseph Frye | frye--001jos | 1899 | 4/29-6/8 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Jesse Frysinger | frysin001jes | 1899 | Chester | Independent | Chester, PA | ||
| Charles Fuller | fuller003cha | 1899 | Wabash | Indiana-Illinois League | Wabash, IN | ||
| William Fuller | fuller020--- | 1899 | 5/1-5/9 | Dayton Veterans | Interstate League | Dayton, OH | |
| William Fuller | fuller020--- | 1899 | 6/8-6/14 | Dayton Veterans | Interstate League | Dayton, OH | |
| Dave Fultz | fultz-001dav | 1899 | 2 g. | Philadelphia | National League | Philadelphia, PA | |
| Dave Fultz | fultz-001dav | 1899 | 57 g. | Baltimore | National League | Baltimore, MD | |
| John Gabriel | gabrie002joh | 1899 | -8/2 | Emporia | Independent | Emporia, KS | |
| Gaffikin | gaffik001--- | 1899 | 6/27-6/29 | Scranton Miners | Atlantic League | Scranton, PA | |
| John Gaffney | gaffne002joh | 1899-00 | -9/19 | 130 g. | MLB Umpire | National League | , |
| Robert Gaines | gaines000bob | 1899 | Knox College | College | , | ||
| Gallagher | gallag018--- | 1899 | 5/12 | Scranton Miners | Atlantic League | Scranton, PA | |
| Gallagher | gallag022--- | 1899 | 5/10-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Gallagher | gallag022--- | 1899 | 5/30-5/31 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Gallagher | gallag021--- | 1899 | 5/17-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| Gallagher | gallag021--- | 1899 | 5/24-5/31 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| Andy Gallagher | gallag001and | 1899 | 5/10-9/4 | Newport Colts | New England League | Newport, RI | |
| Eddie Gallagher | gallag001edd | 1899 | 6/30-7/5 | Austin Senators | Texas Association | Austin, TX | |
| John Gallagher | gallag001joh | 1899 | Ottumwa Giants | Western Association | Ottumwa, IA | ||
| Marty Gallagher | gallag001mar | 1899 | 7/2 | Albany Senators | New York State League | Albany, NY | |
| Mike Gallagher | gallag001mik | 1899 | 5/17-7/10 | Derby Lushers | Connecticut State League | Derby, CT | |
| Mike Gallagher | gallag001mik | 1899 | 7/17-7/20 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Shorty Gallagher | gallag005cha | 1899 | 5/15 | Stratford Poets | Canadian League | Stratford, ON | |
| William Gallagher | gallag002wil | 1899 | 6/27-7/18 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| William Gallagher | gallag002wil | 1899 | 7/20-7/30 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Bill Galloway | gallow003wil | 1899 | 5 g. | Woodstock Bains | Canadian League | Woodstock, ON | |
| Daff Gammons | gammon001joh | 1899-00 | Harvard Univ. | College | , | ||
| Bob Ganley | ganley002rob | 1899 | 5/10-8/7 | Brockton Shoemakers | New England League | Brockton, MA | |
| Bob Ganley | ganley002rob | 1899 | 8/9-9/9 | Albany Senators | New York State League | Albany, NY | |
| Bill Gannon | gannon002wil | 1899 | 5/12-9/9 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Gussie Gannon | gannon001gus | 1899 | 4/29-5/6 | Hartford Indians | Eastern League | Hartford, CT | |
| Gussie Gannon | gannon001gus | 1899 | no g. | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Gussie Gannon | gannon001gus | 1899 | 6/17-9/4 | Newport Colts | New England League | Newport, RI | |
| Billy Ganss | gans--001bil | 1899 | Cleve.-Brooklyns | Independent | Cleveland, OH | ||
| Joe Ganzel | ganzel001jos | 1899 | 5/1-6/18 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Joe Ganzel | ganzel001jos | 1899 | 6/30-7/8 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| John Ganzel | ganzel001joh | 1899 | 4/28-9/9 | Kansas City Blues | Western League | Kansas City, MO | |
| George Gardner | gardne001geo | 1899 | Wallingford | Independent | Wallingford, CT | ||
| Jim Gardner | gardne001jam | 1899 | 6 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Jim Gardner | gardne001jam | 1899 | 8/4-8/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Willie Garoni | garoni001wil | 1899 | NY-Athletic C. | Independent | New York, NY | ||
| Willie Garoni | garoni001wil | 1899 | 5/30-9/5 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Willie Garoni | garoni001wil | 1899 | 9/7-9/22 | 3 g. | New York | National League | New York, NY |
| Garrett | garret009--- | 1899 | 7/4-9/4 | Manchester Manchesters | New England League | Manchester, NH | |
| Garrett | garret006--- | 1899 | 6/1- | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Al Garrett | 1899 | Chicago Columbia | Independent | Chicago, IL | |||
| Jim Garry | garry-001jim | 1899 | 4/27-9/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Joseph Garvey | garvey001jos | 1899 | 5/17-7/26 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Peter Garvey | garvey001pet | 1899 | , | ||||
| Ned Garvin | garvin001vir | 1899 | 4/28-7/3 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Ned Garvin | garvin001vir | 1899 | 24 g. | Chicago | National League | Chicago, IL | |
| Welcome Gaston | gaston002wel | 1899 | 4/28 | 1 g. | Brooklyn | National League | Brooklyn, NY |
| Welcome Gaston | gaston002wel | 1899 | 6/5-9/11 | Detroit Tigers | Western League | Detroit, MI | |
| Frank Gatins | gatins001fra | 1899 | 5/8-9/10 | Hartford Indians | Eastern League | Hartford, CT | |
| Dale Gear | gear--001dal | 1899 | U. of Kansas | College | , | ||
| Dale Gear | gear--001dal | 1899 | 5/5-9/9 | Kansas City Blues | Western League | Kansas City, MO | |
| Phil Geier | geier-001phi | 1899 | 4/28-9/10 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Gelbey | gelbey001--- | 1899 | 7/8 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Frank Genins | genins001c-- | 1899 | 4/27-7/17 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Frank Genins | genins001c-- | 1899 | 7/18-9/10 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Bill George | george001bil | 1899 | 6/17 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Ray Gerber | gerber001ray | 1899 | 5/28-7/9 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Ray Gerber | gerber001ray | 1899 | 7/18 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Lou Gertenrich | gerten001lou | 1899 | no g. | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Charlie Gettig | gettig002cha | 1899 | 34 g. | New York | National League | New York, NY | |
| Tom Gettinger | gettin001tom | 1899 | 4/27-5/28 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Jake Gettman | gettma001jac | 1899 | 4/14- | 19 g. | Washington | National League | Washington, DC |
| Jake Gettman | gettma001jac | 1899 | 5/27-8/27 | Kansas City Blues | Western League | Kansas City, MO | |
| Ollie Gfroerer | gfroer001oli | 1899 | Paducah? | Paducah, KY | |||
| Elmer Gibbs | gibbs-001elm | 1899 | 28 g. | San Diego Fullers | Southern California League | San Diego, CA | |
| James Giblin | giblin001jam | 1899 | 5/17-8/11 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Norwood Gibson | gibson001nor | 1899 | , | ||||
| Al Gifford | giffor001al- | 1899 | Elwood IN | Independent | Elwood, IN | ||
| Billy Gilbert | gilber002wil | 1899 | 5/12-9/9 | Utica Pentups | New York State League | Utica, NY | |
| Jack Gilbert | gilber005joh | 1899 | 5/9-5/11 | Scranton Miners | Atlantic League | Scranton, PA | |
| Jack Gilbert | gilber005joh | 1899 | 5/15-9/4 | Newport Colts | New England League | Newport, RI | |
| Jack Gildea | gildea001joh | 1899 | Peabody MA | Independent | Peabody, MA | ||
| Peter Gildea | gildea001pet | 1899 | 5/20-6/5 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Peter Gildea | gildea001pet | 1899 | 6/8-8/10 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Gilkerson | 1899 | Mount Holly NJ | S-Pro | Mount Holly, NJ | |||
| Bob Gilks | gilks-001rob | 1899 | 4/30-9/17 | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Warren Gill | gill--001war | 1899 | Iola | Independent | Iola, KS | ||
| Sam Gillen | gillen001sam | 1899 | 4/27-7/2 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Sam Gillen | gillen001sam | 1899 | 8/5-9/17 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Broncho Gilligan | 1899 | Dayton Veterans | Interstate League | Dayton, OH | |||
| Eddie Gilligan | gillig001edw | 1899 | 4/17-6/21 | Austin Senators | Texas Association | Austin, TX | |
| Eddie Gilligan | gillig001edw | 1899 | 6/24-7/5 | Buffalo Bisons | Western League | Buffalo, NY | |
| George Gillpatrick | gillpa001geo | 1899 | 4/29-4/30 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| George Gillpatrick | gillpa001geo | 1899 | 5/21-9/15 | Dayton Veterans | Interstate League | Dayton, OH | |
| Frank Gimlin | gimlin001joh | 1899 | Ogden UT | Independent | Ogden, UT | ||
| Billy Ging | ging--001bil | 1899 | 5/17-9/16 | New London Whalers | Connecticut State League | New London, CT | |
| Billy Ging | ging--001bil | 1899 | 9/25 | 1 g. | Boston | National League | Boston, MA |
| Fred Glade | glade-001fre | 1899 | 7 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Phil Glade | glade-001phi | 1899 | 16 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Jack Glasscock | glassc001jac | 1899 | 4/30-9/15 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Harry Gleason | gleaso001har | 1899 | 5/10-6/14 | Springfield Ponies | Eastern League | Springfield, MA | |
| Harry Gleason | gleaso001har | 1899 | Mount Holly NJ | S-Pro | Mount Holly, NJ | ||
| Kid Gleason | gleaso002wil | 1899 | 147 g. | New York | National League | New York, NY | |
| Bob Glenalvin | glenal001bob | 1899 | 4/28-8/13 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Martin Glendon | glendo001mar | 1899 | 1 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Ed Glenn | glenn-001edw | 1899 | 5/10-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Ed Glenn | glenn-001edw | 1899 | 5/30-6/1 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Ed Glenn | glenn-001edw | 1899 | 6/3-6/17 | Taunton Herrings | New England League | Taunton, MA | |
| Ed Glenn | glenn-001edw | 1899 | +7/4-9/16 | New Haven Blues | Connecticut State League | New Haven, CT | |
| John Gochnaur | gochna001joh | 1899 | 4/27-6/27 | Paterson Giants | Atlantic League | Paterson, NJ | |
| A. L. Goebel | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Kokomo, IN | |||
| Billy Goeckel | goecke001bil | 1899 | 4/27-8/5 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Billy Goeckel | goecke001bil | 1899 | 8/10-9/21 | 37 g. | Philadelphia | National League | Philadelphia, PA |
| Charles Golden | golden002cha | 1899 | 7 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Johnny Gonding | gondin001joh | 1899 | 4/27-8/5 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Johnny Gonding | gondin001joh | 1899 | 8/10-9/9 | Kansas City Blues | Western League | Kansas City, MO | |
| Tom Goodhart | goodha001tom | 1899 | Lanc.-Active | Independent | Lancaster, PA | ||
| Goodwin | 1899 | no g. | Richmond Bluebirds | Atlantic League | Richmond, VA | ||
| Art Goodwin | goodwi001art | 1899 | 5/5-8/5 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Ly Gorton | gorton001lym | 1899 | 2 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Roger Gorton | gorton001rog | 1899 | Corning NY | Independent | Corning, NY | ||
| William Gould | gould-004wil | 1899 | no g. | Pittsburgh | National League | Pittsburgh, PA | |
| Goulden | goulde001--- | 1899 | 5/3 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Mike Grady | grady-002mic | 1899 | 87 g. | New York | National League | New York, NY | |
| William Graffius | graffi001wil | 1899 | 5/1- | New Castle Quakers | Interstate League | New Castle, PA | |
| William Graffius | graffi001wil | 1899 | 8/6-8/12 | Dayton Veterans | Interstate League | Dayton, OH | |
| William Graffius | graffi001wil | 1899 | -9/20 | 93 g. | New Castle Quakers | Interstate League | New Castle, PA |
| Charlie Graham | graham002cha | 1899 | 30 g. | San Jose Brewers | California League | San Jose, CA | |
| Vasco Graham | graham001vas | 1899 | Cuban Giants | Independent | Cuban, | ||
| Charlie Grant | grant-003cha | 1899 | Chicago Columbia | Independent | Chicago, IL | ||
| Frank Grant | grant-001fra | 1899 | Cuban X Giants | Independent | Cuban, | ||
| George Grant | grant-003geo | 1899 | 5/10-8/19 | Taunton Herrings | New England League | Taunton, MA | |
| George Grant | grant-003geo | 1899 | 8/23-8/26 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Frank Graves | graves004fra | 1899 | Umpire | So | , | ||
| Pat Graves | graves000pat | 1899 | Concord | Concord, NC | |||
| Pat Graves | graves000pat | 1899 | Wadesboro | Wadesboro, NC | |||
| Gray | 1899 | 4 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Bill Gray | gray--001bil | 1899 | 4/28-8/30 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Chummy Gray | gray--001chu | 1899 | 4/27-9/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Chummy Gray | gray--001chu | 1899 | 9/14-10/14 | 9 g. | Pittsburgh | National League | Pittsburgh, PA |
| Green | 1899 | Baltimore Giants | Independent | Baltimore, MD | |||
| Danny Green | green-001edw | 1899 | 4/14- | 117 g. | Chicago | National League | Chicago, IL |
| James Green | green-010jam | 1899 | , | ||||
| A.V. Greene | greene001a-- | 1899 | Hills MN | Independent | Hills, MN | ||
| Paddy Greene | greene001pat | 1899 | 7/27-8/8 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Paddy Greene | greene001pat | 1899 | 8/13 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Paddy Greene | greene001pat | 1899 | 8/14-8/22 | Taunton Herrings | New England League | Taunton, MA | |
| Doc Greenwald | greenw001doc | 1899 | +8/13+ | Umpire | IntSt | , | |
| Greenwood | greenw005--- | 1899 | 7/26 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| William Greer | greer-001wil | 1899 | 5/27-6/1 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Raymond Gregory | gregor001ray | 1899 | 5 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Raymond Gregory | gregor001ray | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | ||
| Ed Gremminger | gremmi001lor | 1899 | 105 g. | Buffalo Bisons | Western League | Buffalo, NY | |
| Grey | 1899 | Cuban Giants | Independent | Cuban, | |||
| Reddy Grey | grey--001rom | 1899 | 4/28-9/10 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Frank Gridley | gridle000fra | 1899 | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Griffin | griffi032--- | 1899 | 6/6-6/10 | Taunton Herrings | New England League | Taunton, MA | |
| Griffin | 1899 | 6/6-6/11 | Reading Coal Heavers | Atlantic League | Reading, PA | ||
| J. W. Griffin | 1899 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |||
| Percy Griffin | griffi001per | 1899 | 41 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| Percy Griffin | griffi001per | 1899 | 6/4-7/5 | Houston Buffaloes | Texas Association | Houston, TX | |
| Sandy Griffin | griffi001san | 1899 | 5/25-9/9 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Steve Griffin | griffi001ste | 1899 | 4/30-9/16 | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Thomas Griffin | griffi007tho | 1899 | Springfield IL | Independent | Springfield, IL | ||
| Thomas Griffin | griffi007tho | 1899 | 6 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Clark Griffith | griffi003cla | 1899 | 39 g. | Chicago | National League | Chicago, IL | |
| Jack Grim | grim--001joh | 1899 | 5/17-7/5 | Austin Senators | Texas Association | Austin, TX | |
| John Grim | grim--002joh | 1899 | 15 g. | Brooklyn | National League | Brooklyn, NY | |
| John Grim | grim--002joh | 1899 | Umpire | IntSt | , | ||
| Myron Grimshaw | grimsh001myr | 1899 | 57 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Weir Grissinger | grissi001j-- | 1899 | 7/10-7/25 | Taunton Herrings | New England League | Taunton, MA | |
| George Grosart | grossa001geo | 1899 | Homestead | Independent | Homestead, PA | ||
| James Grossart | grossh001jam | 1899 | 7/7-7/12 | Worcester Farmers | Eastern League | Worcester, MA | |
| James Grossart | grossh001jam | 1899 | no g. | Boston | National League | Boston, MA | |
| James Grove | grove-003jam | 1899 | 5/10-7/18 | Taunton Herrings | New England League | Taunton, MA | |
| James Grove | grove-003jam | 1899 | 7/21-7/24 | Newport Colts | New England League | Newport, RI | |
| James Grove | grove-003jam | 1899 | 7/27-8/18 | Taunton Herrings | New England League | Taunton, MA | |
| J. Grozart | 1899 | no g. | Newport Colts | New England League | Newport, RI | ||
| Henry Gruber | gruber001hen | 1899 | 5/13-8/16 | Umpire | East | , | |
| Jim Guercio | guerci001jim | 1899 | 28 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Raymond Guernsey | 1899 | Yale Univ. | College | , | |||
| Raymond Guernsey | 1899 | Poughkeepsie NY | Independent | Poughkeepsie, NY | |||
| Whitey Guese | guese-001the | 1899 | 5/1-5/13 | Detroit Tigers | Western League | Detroit, MI | |
| Whitey Guese | guese-001the | 1899 | 5/21-9/16 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Frank Guest | guest-001fra | 1899 | Chester | Independent | Chester, PA | ||
| Olin Gunnett | 1899 | Frostburg MD | Independent | Frostburg, MD | |||
| John Gunshannon | gunsha001joh | 1899 | +5/27-8/7+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Joe Gunson | gunson001joe | 1899 | 4/28-7/9 | Newark Colts | Atlantic League | Newark, NJ | |
| Joe Gunson | gunson001joe | 1899 | Springfield MA? | Springfield, MA | |||
| Joe Gunson | gunson001joe | 1899 | Springfield Ponies | Eastern League | Springfield, MA | ||
| Frank Gunther | gunthe001fra | 1899 | 33 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Frank Gunther | gunthe001fra | 1899 | Woodstock Bains | Canadian League | Woodstock, ON | ||
| Sylvester Guy | guy---001syl | 1899 | MarcHook-McClure | Independent | , | ||
| Sylvester Guy | guy---001syl | 1899 | 6/5-6/10 | Portland Phenoms | New England League | Portland, ME | |
| Haas | haas--001--- | 1899 | 8/9 | Dayton Veterans | Interstate League | Dayton, OH | |
| Haas | haas--001--- | 1899 | 8/18-8/19 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Julius Haas | haas--001j-- | 1899 | 6/24-6/29 | Albany Senators | New York State League | Albany, NY | |
| Herman Habel | habel-001her | 1899 | 13 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Irv Hach | hach--001irv | 1899 | 31 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Jim Hackett | hacket001jam | 1899 | 5/2-9/19 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| R.E. Haeger | haeger001r-- | 1899 | 5/12-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| R.E. Haeger | haeger001r-- | 1899 | 5/24-5/25 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| Frank Hafford | haffor001fra | 1899 | Georgetown Col | College | , | ||
| Alf Hagerman | hagerm001alf | 1899 | 33 g. | Chatham Reds | Canadian League | Chatham, ON | |
| Alf Hagerman | hagerm001alf | 1899 | Hamilton Blackbirds | Canadian League | Hamilton, ON | ||
| Peter Hagerty | hagert001pet | 1899 | 73 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Peter Hagerty | hagert001pet | 1899 | 8/14-8/22 | Detroit Tigers | Western League | Detroit, MI | |
| Peter Hagerty | hagert001pet | 1899 | 9/4-9/16 | Dayton Veterans | Interstate League | Dayton, OH | |
| Noodles Hahn | hahn--001fra | 1899 | 4/18- | 38 g. | Cincinnati | National League | Cincinnati, OH |
| Louis Halbritter | halbri001lou | 1899 | Ilion | Independent | Ilion, NY | ||
| Jess Hale | hale--001jes | 1899 | 5/27-5/31 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Jess Hale | hale--001jes | 1899 | 14 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Charles Hall | 1899 | 8/2-8/24 | Umpire | NYSt | , | ||
| Elliott Hall | 1899 | Union SC | Independent | Union, SC | |||
| Oscar Hall | hall--001osc | 1899 | Marion IN | Independent | Marion, IN | ||
| Russ Hall | hall--011rob | 1899 | 4/27-6/19 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Russ Hall | hall--011rob | 1899 | 6/20-9/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Jocko Halligan | hallig001joc | 1899 | 4/27-8/5 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Jocko Halligan | hallig001joc | 1899 | 8/10-9/9 | Kansas City Blues | Western League | Kansas City, MO | |
| Bill Hallman | hallma002wil | 1899 | 4/28-6/26 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Bill Hallman | hallma002wil | 1899 | 7/3-9/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Bill Hallman | hallma001wil | 1899 | 5/12-9/ | Utica Pentups | New York State League | Utica, NY | |
| Wilmer Hallowell | hallow001wil | 1899 | 5/14-6/6 | Rome Romans | New York State League | Rome, NY | |
| Charlie Hamburg | hambur003cha | 1899 | 5/12-9/9 | Oswego Grays | New York State League | Oswego, NY | |
| Billy Hamilton | hamilt006wil | 1899 | 84 g. | Boston | National League | Boston, MA | |
| Billy Hammond | hammon002wil | 1899 | 91 g. | Oakland Oaks | California League | Oakland, CA | |
| Eddie Hammond | hammon001edw | 1899 | Helena | Independent | Helena, MT | ||
| Lee Hammond | hammon001lee | 1899 | 13 g. | Oakland Oaks | California League | Oakland, CA | |
| Jack Handiboe | handib001j-- | 1899 | 51 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Jack Handiboe | handib001j-- | 1899 | Woodstock Bains | Canadian League | Woodstock, ON | ||
| Chip Hanford | hanfor002cha | 1899 | no g. | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Arthur Hanks | hanks-001art | 1899 | +8/16+ | Chambersburg PA | Independent | Chambersburg, PA | |
| George Hanley | hanley002geo | 1899 | 5/12-8/5 | Oswego Grays | New York State League | Oswego, NY | |
| George Hanley | hanley002geo | 1899 | 8/17-9/9 | Rome Romans | New York State League | Rome, NY | |
| Bill Hanlon | hanlon001wil | 1899 | 50 g. | San Jose Brewers | California League | San Jose, CA | |
| Edward Hanlon | hanlon002edw | 1899 | 5/10 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Ned Hanlon | hanlon001ned | 1899 | Brooklyn | National League | Brooklyn, NY | ||
| Tim Hanna | hanna-001tim | 1899 | 5/10-9/4 | Newport Colts | New England League | Newport, RI | |
| Pat Hannivan | hanniv001pat | 1899 | 4/28-9/10 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Billy Hanrahan | hanrah001wil | 1899 | +8/11+ | Grand Forks | Independent | Grand Forks, ND | |
| Harry Hanrahan | hanrah000har | 1899 | +8/11+ | Grand Forks | Independent | Grand Forks, ND | |
| Eddie Hanscomb | hansco001edm | 1899 | 5/17-9/16 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| George Hanson | hanson001geo | 1899 | 8 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Scott Hardesty | hardes002sco | 1899 | 5/14-8/6 | Newark Colts | Atlantic League | Newark, NJ | |
| Scott Hardesty | hardes002sco | 1899 | 8/17-9/8 | 22 g. | New York | National League | New York, NY |
| Lou Hardie | hardie001lou | 1899 | 90 g. | Oakland Oaks | California League | Oakland, CA | |
| Lou Hardie | hardie001lou | 1899 | 1 g. | Oakland Oaks | California League | Oakland, CA | |
| Hardin | hardin004--- | 1899 | 8/12-8/13 | Dayton Veterans | Interstate League | Dayton, OH | |
| Hardy | hardy-006--- | 1899 | 4/29 | Austin Senators | Texas Association | Austin, TX | |
| Alex Hardy | hardy-001dav | 1899 | 11 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Alex Hardy | hardy-001dav | 1899 | 7/3-7/30 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Alex Hardy | hardy-001dav | 1899 | 8/7 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Billy Hargrove | hargro002wil | 1899 | 4/27-8/5 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Billy Hargrove | hargro002wil | 1899 | 8/8-9/9 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Bill Harker | harker001--- | 1899 | Billings | Independent | Billings, MT | ||
| James Harkins | harkin002jam | 1899 | 5/12-5/25 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Dick Harley | harley001ric | 1899 | 142 g. | Cleveland | National League | Cleveland, OH | |
| J. Harley | harley001j-- | 1899 | Utica Pentups | New York State League | Utica, NY | ||
| George Harper | harper003joh | 1899 | 26 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| George Harper | harper003joh | 1899 | 13 g. | Oakland Oaks | California League | Oakland, CA | |
| George Harper | harper003joh | 1899 | 1 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| George Harper | harper003joh | 1899 | Zanesville OH | Independent | Zanesville, OH | ||
| Jack Harper | harper003cha | 1899 | 5/2-7/16 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Jack Harper | harper003cha | 1899 | 7/20-7/29 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Jack Harper | harper003cha | 1899 | 7/31- | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Jack Harper | harper003cha | 1899 | Fort Smith | Independent | Fort Smith, AR | ||
| Jack Harper | harper003cha | 1899 | 9/18- | 5 g. | Cleveland | National League | Cleveland, OH |
| Harrigan | harrig001--- | 1899 | 8/8-8/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Joe Harrington | harrin001joe | 1899 | 4/29-8/8 | Worcester Farmers | Eastern League | Worcester, MA | |
| Charlie Harris | harris012cha | 1899 | 5/26-10/14 | 30 g. | Baltimore | National League | Baltimore, MD |
| Hank Harris | harris001hen | 1899 | San Francisco A's | California League | San Francisco, CA | ||
| Eldred Harrison | harris000eld | 1899 | +9/20+ | Sedalia MO | Independent | Sedalia, MO | |
| John Harry | 1899 | no g. | Montreal Royals | Eastern League | Montreal, QC | ||
| Bill Hart | hart--004wil | 1899 | 5/3-8/4 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Bill Hart | hart--004wil | 1899 | 8/20-9/9 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Jack Hart | hart--001jac | 1899 | 14 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Jack Hart | hart--001jac | 1899 | 7/31 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Jimmy Hart | hart--003jam | 1899 | West Superior WI | Independent | West Superior, | ||
| Jimmy Hart | hart--003jam | 1899 | 8/15-9/6 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Seth Hart | hart--001set | 1899 | 5 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Seth Hart | hart--001set | 1899 | 18 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Jack Hartley | hartle001jac | 1899 | 28 g. | San Diego Fullers | Southern California League | San Diego, CA | |
| Fred Hartman | hartma003fre | 1899 | 51 g. | New York | National League | New York, NY | |
| Fred Hartman | hartma003fre | 1899 | 7/11-7/17 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Fred Hartman | hartma003fre | 1899 | McKeesport PA | Independent | McKeesport, PA | ||
| Henry Hartman | hartma014--- | 1899 | 7 g. | San Francisco A's | California League | San Francisco, CA | |
| William Hartman | hartma001wil | 1899 | 4/30-9/17 | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Topsy Hartsel | hartse001tul | 1899 | 30 g. | Louisville | National League | Louisville, KY | |
| Topsy Hartsel | hartse001tul | 1899 | 6/26-9/6 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Roy Hartzell | hartze001roy | 1899 | +6/1-6/4+ | Golden | Independent | Golden, CO | |
| Zaza Harvey | harvey001erv | 1899 | 70 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Jack Haskell | haskel001jac | 1899 | 4/27-9/11 | Umpire | West | , | |
| Bill Hassamaer | hassam001bil | 1899 | +5/30-6/10+ | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Charlie Hastings | hastin002cha | 1899 | 5/29-7/6 | Kansas City Blues | Western League | Kansas City, MO | |
| Charlie Hastings | hastin002cha | 1899 | 7/13-8/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Gil Hatfield | hatfie001gil | 1899 | 5/20-9/16 | New London Whalers | Connecticut State League | New London, CT | |
| Hathaway | hathaw002--- | 1899 | 9/7 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Bill Hausen | hausen001hom | 1899 | 20 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Bill Hausen | hausen001hom | 1899 | 6/20-8/28 | Buffalo Bisons | Western League | Buffalo, NY | |
| Bill Hawke | hawke-001bil | 1899 | 5/30-8/4 | Brockton Shoemakers | New England League | Brockton, MA | |
| Bill Hawke | hawke-001bil | 1899 | 8/13-9/9 | Albany Senators | New York State League | Albany, NY | |
| R.L. Hawkins | hawkin000rl- | 1899 | Univ. of Missouri | College | , | ||
| R.L. Hawkins | hawkin000rl- | 1899 | Jefferson City | Independent | Jefferson City, MO | ||
| Marvin Hawley | hawley001sco | 1899 | 5/17 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Pink Hawley | hawley001eme | 1899 | 34 g. | Cincinnati | National League | Cincinnati, OH | |
| Jack Hayden | hayden001joh | 1899-00 | U. of Penn | College | , | ||
| Hayes | hayes-034--- | 1899 | 6/2 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Bert Hayes | hayes-001ber | 1899 | 48 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Bert Hayes | hayes-001ber | 1899 | 1 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Tim Hayes | hayes-003tim | 1899 | 5/17-6/2 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Haynes | haynes007--- | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Haynes | haynes007--- | 1899 | 4 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| William Hayward | haywar001wil | 1899 | 5/12-5/21 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Doc Hazelton | hazlet001wil | 1899-01 | Tufts University | College | , | ||
| E. Hazena | 1899 | no g. | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | ||
| Peter Healey | healey001pet | 1899 | 5/1-6/2 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Hughie Hearne | hearne001hug | 1899 | 5/28-9/9 | Albany Senators | New York State League | Albany, NY | |
| Charles Hebrand | hebran001cha | 1899 | 5/15 | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Al Hecht | hecht-001al- | 1899 | 5/17 | Albany Senators | New York State League | Albany, NY | |
| Ed Heck | heck--004--- | 1899 | +8/11+ | Cherryvale KS | Independent | Cherryvale, KS | |
| George Heckman | heckma001geo | 1899 | +6/3-7/1 | New Haven Blues | Connecticut State League | New Haven, CT | |
| George Heckman | heckma001geo | 1899 | 7/4-7/15 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| George Heckman | heckma001geo | 1899 | 8/28 | New London Whalers | Connecticut State League | New London, CT | |
| Emmet Heidrick | heidri001joh | 1899 | 146 g. | St. Louis | National League | St. Louis, MO | |
| Edward Heimerl | heimer000edw | 1899 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | ||
| Bill Heine | heine-001wil | 1899 | 5/1-5/9 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Bill Heine | heine-001wil | 1899 | 5/15-6/20 | Oswego Grays | New York State League | Oswego, NY | |
| Bill Heine | heine-001wil | 1899 | 6/23-7/30 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Bill Heine | heine-001wil | 1899 | 8/1-9/9 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| H. H. Heistand | 1899 | Findley | Independent | Findley, OH | |||
| Charles Helberger | helber001cha | 1899 | 5/3 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Charles Helberger | helber001cha | 1899 | 5/19-6/2 | Dayton Veterans | Interstate League | Dayton, OH | |
| Percy Held | held--001ric | 1899 | 13 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Percy Held | held--001ric | 1899 | 7 g. | San Diego Fullers | Southern California League | San Diego, CA | |
| Percy Held | held--001ric | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Percy Held | held--001ric | 1899 | 1 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Hellman | 1899 | 1 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| Hemingway | 1899 | +9/14+ | New Haven Blues | Connecticut State League | New Haven, CT | ||
| George Hemming | hemmin002geo | 1899 | 4/29-9/9 | Springfield Ponies | Eastern League | Springfield, MA | |
| George Hemming | hemmin002geo | 1899 | 9/12-9/14 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Charlie Hemphill | hemphi001cha | 1899 | 5/1-6/25 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Charlie Hemphill | hemphi001cha | 1899 | 6/27- | 11 g. | St. Louis | National League | St. Louis, MO |
| Charlie Hemphill | hemphi001cha | 1899 | 55 g. | Cleveland | National League | Cleveland, OH | |
| Frank Hemphill | hemphi001fra | 1899 | 69 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Frank Hemphill | hemphi001fra | 1899 | Woodstock Bains | Canadian League | Woodstock, ON | ||
| Hardie Henderson | hender004har | 1899 | Umpire | Atl | , | ||
| Hub Hendricks | hendri001hub | 1899 | 7/13-7/15 | Derby Lushers | Connecticut State League | Derby, CT | |
| P. W. Henley | henley000p-- | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| P. W. Henley | henley001p-- | 1899 | Muncie/Crawford | Indiana-Illinois League | Crawford, IN | ||
| Eddie Henneke | hennek001edd | 1899 | 5/12-6/3 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Joseph Hennessey | hennes003jos | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| Eddie Henry | henry-001edw | 1899 | 4/29-9/10 | Montreal Royals | Eastern League | Montreal, QC | |
| George Henry | henry-002geo | 1899 | 4/27-8/5 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Herbert | herber001--- | 1899 | 7/14-7/16 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Frank Herbert | herber001fra | 1899 | 4/17-7/5 | Austin Senators | Texas Association | Austin, TX | |
| Frank Herbert | herber001fra | 1899 | Battle Creek | Independent | Battle Creek, MI | ||
| Jack Herbert | herber003joh | 1899 | 7/30-8/6 | Newark Colts | Atlantic League | Newark, NJ | |
| Jack Herbert | herber003joh | 1899 | 8/11 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Art Herman | herman001art | 1899 | 13 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Art Herman | herman001art | 1899 | Quincy/Dubuque | Western Association | Dubuque, IA | ||
| Joseph Herndon | herndo001jos | 1899 | 4/27-7/4 | Newark Colts | Atlantic League | Newark, NJ | |
| Joseph Herndon | herndo001jos | 1899 | 7/12-9/15 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Tom Hernon | hernon001tom | 1899 | 6/13-8/23 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Eddie Herr | herr--002edw | 1899 | no g. | Ft. Wayne | IntSt | Fort Wayne, IN | |
| Eddie Herr | herr--002edw | 1899 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | ||
| Lefty Herring | herrin001sil | 1899 | 5/16- | 2 g. | Washington | National League | Washington, DC |
| John Herwig | herwig001joh | 1899 | 5/5 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| John Herwig | herwig001joh | 1899 | PauxsatawnyPA | Independent | Pauxsutawney, PA | ||
| Tom Hess | hess--001tho | 1899 | 4/27-8/5 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Harry Hester | hester001har | 1899 | Iola | Independent | Iola, KS | ||
| Larry Hesterfer | hester001law | 1899 | 7/16 | Newark Colts | Atlantic League | Newark, NJ | |
| Earl Hewitt | hewitt001ear | 1899-03 | PA State Univ. | College | , | ||
| Earl? Hewitt | 1899 | York-Penn Park | Independent | York, PA | |||
| Jake Hewitt | hewitt001jak | 1899 | Pitt.-D.C. & A.C.Indep | Independent | Pittsburgh, PA | ||
| Thomas Hewitt | hewitt001tho | 1899 | 5/24-6/1 | Oswego Grays | New York State League | Oswego, NY | |
| Mike Heydon | heydon001mic | 1899 | 3 g. | Washington | National League | Washington, DC | |
| Mike Heydon | heydon001mic | 1899 | 6/15-9/11 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Charles Heyman | heyman001c-- | 1899 | 5/4-6/14 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Hibbard | 1899 | 6 g. | San Bernardino | Southern California League | San Bernardino, CA | ||
| Hibbard | 1899 | 2 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| Hibbard | 1899 | San Bernardino | Southern California League | San Bernardino, CA | |||
| Al Hickey | hickey001alb | 1899 | Denv.-Gulfs | Independent | Denver, CO | ||
| Eddie Hickey | hickey001edw | 1899 | 4/29-9/6 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Mike Hickey | hickey001mik | 1899 | 5/10-9/4 | Manchester Manchesters | New England League | Manchester, NH | |
| Mike Hickey | hickey001mik | 1899 | 9/6-9/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Mike Hickey | hickey001mik | 1899 | 9/14 | 1 g. | Boston | National League | Boston, MA |
| Walter Hickey | hickey001wal | 1899 | Manistee MI | Independent | Manistee, MI | ||
| Charlie Hickman | hickma004cha | 1899 | 19 g. | Boston | National League | Boston, MA | |
| Rowe Hicks | hicks-001row | 1899 | Newport News | Va | Newport News, VA | ||
| Higgins | higgin021--- | 1899 | 7/18-7/24 | Derby Lushers | Connecticut State League | Derby, CT | |
| George Hildebrand | hildeb002geo | 1899 | 87 g. | San Francisco A's | California League | San Francisco, CA | |
| Hill | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Belden Hill | hill--003bel | 1899 | 34 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Bill Hill | hill--002bil | 1899 | 11 g. | Cleveland | National League | Cleveland, OH | |
| Bill Hill | hill--002bil | 1899 | 8 g. | Baltimore | National League | Baltimore, MD | |
| Bill Hill | hill--002bil | 1899 | 2 g. | Brooklyn | National League | Brooklyn, NY | |
| Bill Hill | hill--002bil | 1899 | Boise | Boise, ID | |||
| Eddie Hill | hill--002edw | 1899 | 5/12-9/9 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Edward Hill | hill--004edw | 1899 | 6/- | Kokomo/Mattoon | Indiana-Illinois League | Kokomo, IN | |
| Oscar Hill | hill--001osc | 1899 | 5/12-7/13 | Utica Pentups | New York State League | Utica, NY | |
| Arthur Hillebrand | hilleb001art | 1899 | +8/27+ | Flandreau | Independent | Flandreau, SD | |
| Homer Hillebrand | hilleb001hom | 1899 | +8/27+ | Flandreau | Independent | Flandreau, SD | |
| Hunkey Hines | hines-001hun | 1899 | 35 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Hunkey Hines | hines-001hun | 1899 | 6/22-6/29 | Buffalo Bisons | Western League | Buffalo, NY | |
| J. Hines | hines-002j-- | 1899 | 1 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| John Hinton | hinton001joh | 1899 | Dubois PA | Independent | Dubois, PA | ||
| William Hoagland | 1899 | 5/12-6/10 | Umpire | NYSt | , | ||
| Carson Hodge | hodge-001car | 1899 | Camden | Independent | Camden, NJ | ||
| Charles Hodge | hodge-001c-- | 1899 | 4/17-7/5 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| George Hodson | hodson002geo | 1899 | 4/27-7/3 | Scranton Miners | Atlantic League | Scranton, PA | |
| George Hodson | hodson002geo | 1899 | 7/13-9/10 | Hartford Indians | Eastern League | Hartford, CT | |
| Fred Hoey | hoey--001fre | 1899 | 7/5-10/14 | g. | New York | National League | New York, NY |
| Bill Hoffer | hoffer003wil | 1899 | 33 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Edward Hoffman | hoffma006edw | 1899 | Ilion | Independent | Ilion, NY | ||
| Jesse Hoffmeister | hoffme002jes | 1899 | 4/28-5/18 | Kansas City Blues | Western League | Kansas City, MO | |
| Jesse Hoffmeister | hoffme002jes | 1899 | 1 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Jesse Hoffmeister | hoffme002jes | 1899 | 5/27-7/4 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Jesse Hoffmeister | hoffme002jes | 1899 | 8/3-8/6 | Kansas City Blues | Western League | Kansas City, MO | |
| Jesse Hoffmeister | hoffme002jes | 1899 | KC-Armour | Independent | , | ||
| H. Hog | 1899 | Meriden Silverites | Connecticut State League | Meriden, CT | |||
| Hogan | hogan-004--- | 1899 | 19 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Marty Hogan | hogan-002mar | 1899 | , | ||||
| George Hogreiver | hogrie001geo | 1899 | 4/27-9/6 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Bradley Hogue | hogue-001b-- | 1899 | 4/24-5/11 | U. of the South | College | , | |
| Billy Holland | hollan001bil | 1899 | Chicago Unions | Independent | Chicago, IL | ||
| Jack Holland | hollan004joh | 1899 | 4/16-7/5 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Wallace Hollingsworth | hollin001wal | 1899 | 4/30-9/17 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Ed Holly | holly-002edw | 1899 | 8/29 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Holmes | holmes011--- | 1899 | 6/27-6/30 | Taunton Herrings | New England League | Taunton, MA | |
| Ducky Holmes | holmes003jam | 1899 | 138 g. | Baltimore | National League | Baltimore, MD | |
| Fred Holmes | holmes001fre | 1899 | Reading Coal Heavers | Atlantic League | Reading, PA | ||
| Fred Holmes | holmes001fre | 1899 | 6/20-8/7 | Brockton Shoemakers | New England League | Brockton, MA | |
| James Honeyman | honeym001jam | 1899 | 40 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| James Honeyman | honeym001jam | 1899 | 6/4-6/11 | Houston Buffaloes | Texas Association | Houston, TX | |
| James Honeyman | honeym001jam | 1899 | 6/28-9/9 | Oswego Grays | New York State League | Oswego, NY | |
| D. Honte | 1899 | Meriden Silverites | Connecticut State League | Meriden, CT | |||
| Buck Hooker | hooker001wil | 1899 | Rich.-Jimplecote | Independent | Richmond, VA | ||
| Ernest Hooker | hooker001e-- | 1899 | 5/12-9/7 | Albany Senators | New York State League | Albany, NY | |
| Hopkins | hopkin015--- | 1899 | 4/17-4/21 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Hopkins | hopkin012--- | 1899 | 5/26 | Houston Buffaloes | Texas Association | Houston, TX | |
| George Hopkins | 1899 | Chicago Unions | Independent | Chicago, IL | |||
| Lee Hopkins | hopkin001leo | 1899 | Salt Lake City | Rio Grande | Salt Lake City, UT | ||
| William Horan | horan-001wil | 1899 | 6/8 | Newark Colts | Atlantic League | Newark, NJ | |
| William Horan | horan-001wil | 1899 | Wallingford | Independent | Wallingford, CT | ||
| Will Horn | horn--004wil | 1899 | Chicago Unions | Independent | Chicago, IL | ||
| Elmer Horton | horton002elm | 1899 | 4/29-9/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Dennis Houle | houle-001den | 1899 | 5/12-5/31 | Albany Senators | New York State League | Albany, NY | |
| Dennis Houle | houle-001den | 1899 | Mechanicsville | Independent | Mechanicsville, | ||
| Ed Householder | househ001edw | 1899 | 4/27-7/4 | Buffalo Bisons | Western League | Buffalo, NY | |
| Ed Householder | househ001edw | 1899 | 7/17-9/9 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Eddie Householder | 1899 | 1 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| William Householder | househ002wil | 1899 | 18 g. | Quincy/Dubuque | Western Association | Dubuque, IA | |
| William Householder | househ002wil | 1899 | Sioux Falls | Sioux Falls, SD | |||
| John Houseman | housem002joh | 1899 | 40 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| John Houseman | housem002joh | 1899 | 6/4-6/13 | Houston Buffaloes | Texas Association | Houston, TX | |
| Lefty Houtz | houtz-001fre | 1899 | 4/16-7/5 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Lefty Houtz | houtz-001fre | 1899 | 7/23-7/26 | 5 g. | Cincinnati | National League | Cincinnati, OH |
| Lefty Houtz | houtz-001fre | 1899 | 8/9-9/10 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Charles Howard | 1899 | Cuban X Giants | Independent | Cuban, | |||
| Elmer Howard | howard000elm | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Mattoon, IL | ||
| Henry Howe | howe--001hen | 1899 | 22 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Henry Howe | howe--001hen | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| Harry Howell | howell001hen | 1899 | 28 g. | Baltimore | National League | Baltimore, MD | |
| Robert Howell | howell001rob | 1899 | +8/16+ | Parsons | Independent | Parsons, KS | |
| Robert Howell | howell001rob | 1899 | +9/1+ | Arkansas City | Independent | Arkansas City, AR | |
| Billy Howells | howell005wil | 1899 | 43 g. | London Cockneys | Canadian League | London, ON | |
| Joe Howkins | howkin001joe | 1899 | 5 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Joe Howkins | howkin001joe | 1899 | Woodstock Bains | Canadian League | Woodstock, ON | ||
| Billy Hoy | hoy---001wil | 1899 | 155 g. | Louisville | National League | Louisville, KY | |
| Frank Huelsman | huelsm001fra | 1899 | 33 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Frank Huelsman | huelsm001fra | 1899 | Quincy/Dubuque | Western Association | Dubuque, IA | ||
| Huff | huff--005--- | 1899 | 31 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Fred Huff | 1899 | no g. | Dayton Veterans | Interstate League | Dayton, OH | ||
| Miller Huggins | huggin001mil | 1899 | 5/31- | 40 g. | Mansfield Haymakers | Interstate League | Mansfield, OH |
| Miller Huggins | huggin001mil | 1899 | semi-pro | , | |||
| Jay Hughes | hughes008jam | 1899 | 35 g. | Brooklyn | National League | Brooklyn, NY | |
| Jay Hughes | hughes008jam | 1899 | 4 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Joe Hughes | hughes002jos | 1899-02 | Geneva College | College | , | ||
| Tom Hughes | hughes004tho | 1899 | Chic.-Amateur | Amat | Chicago, IL | ||
| Jim Hughey | hughey001jim | 1899 | 36 g. | Cleveland | National League | Cleveland, OH | |
| Billy Hulen | hulen-001bil | 1899 | 4/14-5/12 | 19 g. | Washington | National League | Washington, DC |
| Billy Hulen | hulen-001bil | 1899 | 5/21-9/9 | Kansas City Blues | Western League | Kansas City, MO | |
| Thomas Huling | huling001tho | 1899 | +5/20+ | Findley | Independent | Findley, OH | |
| Frank Hulsman | 1899 | Newport RI? | Newport, RI | ||||
| Rudy Hulswitt | hulswi001rud | 1899 | no g. | Syracuse Stars | Eastern League | Syracuse, NY | |
| Rudy Hulswitt | hulswi001rud | 1899 | 6/16 | 1 g. | Louisville | National League | Louisville, KY |
| Frank Humphrey | humphr001fra | 1899 | 2 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Harry Hunt | hunt--001har | 1899 | 5/5-6/7 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| John Hunt | 1899 | -10/14 | 116 g. | MLB Umpire | National League | , | |
| Ed Hurlburt | hurlbu001edw | 1899 | Memphis Chickasaw | Independent | Memphis, TN | ||
| George Hurlburt | hurlbu001geo | 1899 | 4/16-7/5 | Houston Buffaloes | Texas Association | Houston, TX | |
| Jerry Hurley | hurley001jer | 1899 | 5/12-9/8 | Utica Pentups | New York State League | Utica, NY | |
| Bert Husting | hustin001ber | 1899 | 6/19-9/9 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Jack Huston | huston001jac | 1899 | 39 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| Jack Huston | huston001jac | 1899 | 6/4-7/4 | Houston Buffaloes | Texas Association | Houston, TX | |
| Jack Huston | huston001jac | 1899 | 14 g. | San Jose Brewers | California League | San Jose, CA | |
| Jack Huston | huston001jac | 1899 | 2 g. | Oakland Oaks | California League | Oakland, CA | |
| Ed Hutchinson | hutchi002ed- | 1899 | 5 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Ed Hutchinson | hutchi002ed- | 1899 | 58 g. | Oakland Oaks | California League | Oakland, CA | |
| Bill Hutchison | hutchi001bil | 1899 | 4/29-9/9 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Arthur Hutter | 1899 | +5/13+ | Canton High School | HS | , | ||
| Harry Hyde | hyde--000har | 1899 | Chicago Unions | Independent | Chicago, IL | ||
| Ham Iburg | iburg-001her | 1899 | 44 g. | San Francisco A's | California League | San Francisco, CA | |
| Ingram | ingram005--- | 1899 | 8/14 | Dayton Veterans | Interstate League | Dayton, OH | |
| Happy Iott | iott--001fre | 1899 | 5/10-6/1 | Taunton Herrings | New England League | Taunton, MA | |
| Paul Irmscher | irmsch001pau | 1899 | Loui.-Reccius | Independent | Louisville, KY | ||
| Arthur Irwin | irwin-001art | 1899 | Washington | National League | Washington, DC | ||
| Charlie Irwin | irwin-001cha | 1899 | 90 g. | Cincinnati | National League | Cincinnati, OH | |
| John Irwin | irwin-001joh | 1899 | 7/1 | Manchester Manchesters | New England League | Manchester, NH | |
| Thomas Irwin | irwin-004tho | 1899 | 5/5-9/19 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Irwin Isaacs | isaacs001irw | 1899 | 4/17-7/5 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Frank Isbell | isbell001wil | 1899 | 4/28-9/10 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Tom Ivers | ivers-001tho | 1899 | +5/20-8/23 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Tom Ivers | ivers-001tho | 1899 | 7/28 | Derby Lushers | Connecticut State League | Derby, CT | |
| Tom Ivers | ivers-001tho | 1899 | 8/26-9/16 | New London Whalers | Connecticut State League | New London, CT | |
| Fred Jacklitsch | jackli001fre | 1899 | 4/29-9/10 | Montreal Royals | Eastern League | Montreal, QC | |
| Al Jacks | jacks-001al- | 1899 | San Antonio Bronchos | Texas Association | San Antonio, TX | ||
| Andy Jackson | jackso005and | 1899 | Cuban X Giants | Independent | Cuban, | ||
| Bill Jackson | jackso001bil | 1899 | Cuban X Giants | Independent | Cuban, | ||
| Robert Jackson | 1899 | Chicago Unions | Independent | Chicago, IL | |||
| Jack Jamieson | jamies001jac | 1899 | 4/18-5/16 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Jack Jamieson | jamies001jac | 1899 | Iola | Independent | Iola, KS | ||
| Jansen | 1899 | Williams Col | College | , | |||
| Jack Jarvis | jarvis005wil | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| Rube Jarvis | jarvis000rub | 1899 | Mankato KS | Independent | Mankato, KS | ||
| Charles Jeffries | jeffri001cha | 1899 | Lancaster-Actives | Independent | Lancaster, PA | ||
| Ed Jeffries | jeffri001e-- | 1899 | +8/12+ | Lancaster-Actives | Independent | Lancaster, PA | |
| Jim Jeffries | 1899 | 6/13-6/15 | Umpire | CtSt | , | ||
| Jennifer | 1899 | 2 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| George Jennings | jennin001geo | 1899 | 1 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Hughie Jennings | jennin001hug | 1899 | 67 g. | Brooklyn | National League | Brooklyn, NY | |
| Hughie Jennings | jennin001hug | 1899 | 2 g. | Baltimore | National League | Baltimore, MD | |
| Hughie Jennings | jennin001hug | 1899 | , | ||||
| Clarence Jessup | jessup001cla | 1899 | 6/27-7/1 | Dayton Veterans | Interstate League | Dayton, OH | |
| Clarence Jessup | jessup001cla | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| Fred Jevne | jevne-001fre | 1899 | Umpire | So | , | ||
| Jacob Jimerson | jamiso001jac | 1899 | 4/27-8/3 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Jocko | 1899 | +9/17+ | Cuban Giants | Independent | Cuban, | ||
| Johnson | johnso047--- | 1899 | 8/16-8/17 | Oswego Grays | New York State League | Oswego, NY | |
| Abbie Johnson | johnso002abb | 1899 | 4/29-9/10 | Montreal Royals | Eastern League | Montreal, QC | |
| Chappie Johnson | johnso025cha | 1899 | Chicago Columbia | Independent | Chicago, IL | ||
| Thomas Johnson | johnso007tho | 1899 | 5/5-7/14 | Hartford Indians | Eastern League | Hartford, CT | |
| Thomas Johnson | johnso007tho | 1899 | 7/18-8/7 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Youngy Johnson | johnso002you | 1899 | 14 g. | Oakland Oaks | California League | Oakland, CA | |
| Youngy Johnson | johnso002you | 1899 | 9/16 | 1 g. | New York | National League | New York, NY |
| Bill Johnston | johnst004wil | 1899 | 16 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Johnstone | johnst026--- | 1899 | 6/9-6/28 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Jim Johnstone | johnst001jim | 1899 | 4/28-5/2 | Newark Colts | Atlantic League | Newark, NJ | |
| Jim Johnstone | johnst001jim | 1899 | no g. | Portland Phenoms | New England League | Portland, ME | |
| Jim Johnstone | johnst001jim | 1899 | 7/19-8/18 | Derby Lushers | Connecticut State League | Derby, CT | |
| Jim Johnstone | johnst001jim | 1899 | Umpire | CtSt | , | ||
| Leslie Johnstone | johnst001les | 1899 | Yale Freshmen | College | , | ||
| Leslie Johnstone | johnst001les | 1899 | 6/1-6/13 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Leslie Johnstone | johnst001les | 1899 | 6/21 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Leslie Johnstone | johnst001les | 1899 | 7/28-9/8 | Oswego Grays | New York State League | Oswego, NY | |
| Jones | jones-101--- | 1899 | 5/17-7/6 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Bert Jones | jones-001ber | 1899 | Independent | , | |||
| Bud Jones | jones-131--- | 1899 | +8/27+ | Flandreau | Independent | Flandreau, SD | |
| Bumpus Jones | jones-011cha | 1899 | 4/29-7/16 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Bumpus Jones | jones-011cha | 1899 | 7/18-9/10 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Charlie Jones | jones-005cha | 1899 | Grove City Col. | College | , | ||
| Charlie Jones | jones-005cha | 1899 | 75 g. | London Cockneys | Canadian League | London, ON | |
| Cowboy Jones | jones-003alb | 1899 | 12 g. | St. Louis | National League | St. Louis, MO | |
| Fielder Jones | jones-001fie | 1899 | 102 g. | Brooklyn | National League | Brooklyn, NY | |
| Jim Jones | jones-022jam | 1899 | 6/14-9/9 | Rome Romans | New York State League | Rome, NY | |
| Johnny Jones | jones-030joh | 1899 | 30 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| Oscar Jones | jones-002osc | 1899 | CaWinter | , | |||
| Willis Jones | jones-041wil | 1899 | Chicago Unions | Independent | Chicago, IL | ||
| Robert Jordan | 1899 | Cuban X Giants | Independent | Cuban, | |||
| Theodore Jordan | jordan000the | 1899 | Guelph Maple Leafs | Canadian League | Guelph, ON | ||
| William Jordan | 1899 | Baltimore Giants | Independent | Baltimore, MD | |||
| Addie Joss | joss--001adr | 1899 | U. of Wisconsin | College | , | ||
| Addie Joss | joss--001adr | 1899 | 4 g. | Watertown WI | Independent | Watertown, WI | |
| Addie Joss | joss--001adr | 1899 | 3 g. | Oshkosh WI | Independent | Oshkosh, WI | |
| Addie Joss | joss--001adr | 1899 | 5 g. | Mantitowac WI | Independent | Manitowoc, WI | |
| William Joyner | 1899 | Chicago Unions | Independent | Chicago, IL | |||
| Mike Kahoe | kahoe-001mic | 1899 | 4/27-9/5 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Mike Kahoe | kahoe-001mic | 1899 | 14 g. | Cincinnati | National League | Cincinnati, OH | |
| Fred Kaiser | kaiser001fre | 1899 | NYC-Riverside | Independent | New York, NY | ||
| George Kalkhoff | kalkho002geo | 1899 | 5/12-6/11 | Oswego Grays | New York State League | Oswego, NY | |
| George Kalkhoff | kalkho002geo | 1899 | 6/13-8/20 | Binghamton Bingos | New York State League | Binghamton, NY | |
| George Kalkhoff | kalkho002geo | 1899 | 8/11 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| George Kalkhoff | kalkho002geo | 1899 | 8/22-9/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Kane | kane--016--- | 1899 | 2 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Kane | kane--005--- | 1899 | Muncie/Crawford | Indiana-Illinois League | Crawford, IN | ||
| Billy Kane | kane--002wil | 1899 | 42 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Billy Kane | kane--002wil | 1899 | no g. | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Harry Kane | kane--001har | 1899 | StLBr-Reserves | Independent | St. Louis, MO | ||
| Jack Katoll | katoll001joh | 1899 | 2 g. | Chicago | National League | Chicago, IL | |
| Jack Katoll | katoll001joh | 1899 | 6/23-9/8 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| George Keefe | keefe-002geo | 1899 | 41 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| George Keefe | keefe-002geo | 1899 | 6/7-7/5 | Houston Buffaloes | Texas Association | Houston, TX | |
| Thomas Keeler | keeler002--- | 1899 | +7/23+ | Evan.-People’s | Courier | Evansville, IN | |
| Willie Keeler | keeler001wil | 1899 | 141 g. | Brooklyn | National League | Brooklyn, NY | |
| Burt Keeley | keeley001bur | 1899-00 | Notre Dame U. | College | , | ||
| Harry Keenan | keenan000har | 1899 | 6/23-8/7 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Jack Keenan | keenan001kid | 1899 | 4/29-7/4 | Scranton Miners | Atlantic League | Scranton, PA | |
| Jack Keenan | keenan001kid | 1899 | 7/10-9/5 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Joe Keenan | keenan001jos | 1899 | 5/1-9/20 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Harry Keener | keener001har | 1899 | 4/28-7/11 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Bill Keister | keiste001wil | 1899 | 136 g. | Baltimore | National League | Baltimore, MD | |
| W. Kelafer | 1899 | Ottawa? | Ottawa, | ||||
| George Kelb | kelb--002geo | 1899 | 5/5- | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Hugh Kellackey | kellac001hug | 1899-00 | , | ||||
| Jack Keller | keller001jac | 1899 | 26 g. | San Diego Fullers | Southern California League | San Diego, CA | |
| Joe Kelley | kelley002jos | 1899 | 143 g. | Brooklyn | National League | Brooklyn, NY | |
| John Kelley | kelley004joh | 1899 | 5/10-9/4 | Manchester Manchesters | New England League | Manchester, NH | |
| Mike Kelley | kelley002mic | 1899 | 4/28-7/13 | Hartford Indians | Eastern League | Hartford, CT | |
| Mike Kelley | kelley002mic | 1899 | 7/15-10/14 | 76 g. | Louisville | National League | Louisville, KY |
| Tom Kelley | kelley001tom | 1899 | 8/29 | Portland Phenoms | New England League | Portland, ME | |
| Albert Kellner | kellne001alb | 1899 | +5/6- | Marion | InSt | Marion, IN | |
| Frank Kellogg | kellog001sis | 1899 | 5/20-5/31 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Win Kellum | kellum001win | 1899 | 5/2-9/11 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Kelly | kelly-033--- | 1899 | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | ||
| Billy Kelly | kelly-004wil | 1899 | Hanford | SoCalif | Hanford, CA | ||
| George Kelly | kelly-005geo | 1899 | Manchester Manchesters | New England League | Manchester, NH | ||
| John Kelly | 1899 | 5/10-7/ | Umpire | NE | , | ||
| John Kelly | 1899 | 8/28-9/10 | Umpire | East | , | ||
| Thomas Kelly | kelly-001tho | 1899 | 2 g. | San Jose Brewers | California League | San Jose, CA | |
| Thomas Kelly | kelly-001tho | 1899 | 2 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Kemmer | kemmer002--- | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Bill Kemmer | kemmer001wil | 1899 | 4/16-7/5 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Ed Kenna | kenna-004edw | 1899 | Georgetown U. | College | , | ||
| Ed Kenna | kenna-004edw | 1899 | Tarboro | Independent | Tarboro, NC | ||
| Kennedy | kenned019--- | 1899 | 6/7-6/10 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Albert Kennedy | kenned002alb | 1899 | 4/29-5/27 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Brickyard Kennedy | kenned005wil | 1899 | 40 g. | Brooklyn | National League | Brooklyn, NY | |
| Charles Kennedy | kenned001cha | 1899 | 5/23-5/30+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Charles Kennedy | kenned001cha | 1899 | 6/10-9/16 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Frank Kennedy | kenned001fra | 1899 | 5/12-5/20 | Pawtucket Colts | New England League | Pawtucket, RI | |
| J. Kennedy | kenned002j-- | 1899 | +7/24-9/14 | Derby Lushers | Connecticut State League | Derby, CT | |
| Jack Kennedy | kenned001joh | 1899 | 5/17-7/1 | Manchester Manchesters | New England League | Manchester, NH | |
| Sam Kennedy | kenned001sam | 1899 | +5/20-7/15 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Sam Kennedy | kenned001sam | 1899 | 7/17-7/18 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Sam Kennedy | kenned001sam | 1899 | 7/20-8/5 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Sam Kennedy | kenned001sam | 1899 | 8/11-9/16 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Sherman Kennedy | kenned001she | 1899 | +5/20-9/16 | New London Whalers | Connecticut State League | New London, CT | |
| Kenney | 1899 | 6/16-6/17+ | New London Whalers | Connecticut State League | New London, CT | ||
| Richard Kenney | 1899 | KC-Hagans | Independent | Kansas City, MO | |||
| James Kent | kent--001jam | 1899 | 51 g. | San Jose Brewers | California League | San Jose, CA | |
| John Kerin | kerin-001joh | 1899 | 5/10-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| John Kerin | kerin-001joh | 1899 | 5/24-5/31 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| John Kerin | kerin-001joh | 1899 | 7/14-8/9 | Taunton Herrings | New England League | Taunton, MA | |
| Kern | kern--001--- | 1899 | 5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| Al Kern | kern--001alv | 1899 | 17 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Al Kern | kern--001alv | 1899 | 7/5-8/30 | Buffalo Bisons | Western League | Buffalo, NY | |
| William Kershaw | kersha001wil | 1899 | 5/3-5/25 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| William Kershaw | kersha001wil | 1899 | 8/7 | Taunton Herrings | New England League | Taunton, MA | |
| Fred Ketchum | ketchu001fre | 1899 | 5/12-9/9 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Fred Ketchum | ketchu001fre | 1899 | 9/12- | 15 g. | Louisville | National League | Louisville, KY |
| Peter Kiernan | kierna001pet | 1899 | 5/17-9/16 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Tom Kiernan | kierna001tho | 1899 | 33 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Tom Kiernan | kierna001tho | 1899 | Quincy/Dubuque | Western Association | Dubuque, IA | ||
| George Kihm | kihm--001geo | 1899 | 5/1- | 27 g. | Wheeling Stogies | Interstate League | Wheeling, WV |
| George Kihm | kihm--001geo | 1899 | Mansfield Haymakers | Interstate League | Mansfield, OH | ||
| Frederick Kilfeder | kilfed001fre | 1899 | 5/12-5/13 | Portland Phenoms | New England League | Portland, ME | |
| Frederick Kilfeder | kilfed001fre | 1899 | +8/5+ | N. Attleboro MA | Independent | North Attleboro, MA | |
| Henry Killeen | killee002hen | 1899 | 5/26-9/16 | Derby Lushers | Connecticut State League | Derby, CT | |
| Frank Killen | killen002fra | 1899 | 4/14- | 2 g. | Washington | National League | Washington, DC |
| Frank Killen | killen002fra | 1899 | 12 g. | Boston | National League | Boston, MA | |
| Frank Killen | killen002fra | 1899 | New Haven Blues | Connecticut State League | New Haven, CT | ||
| Matt Kilroy | kilroy001mat | 1899 | 4/28-6/30 | Hartford Indians | Eastern League | Hartford, CT | |
| John Kimble | kimbal002joh | 1899 | 5/12-7/12 | Oswego Grays | New York State League | Oswego, NY | |
| John Kimble | kimbal002joh | 1899 | 7/17-8/11 | Syracuse Stars | Eastern League | Syracuse, NY | |
| John Kimble | kimbal002joh | 1899 | 8/17-8/24 | Oswego Grays | New York State League | Oswego, NY | |
| Clem Kimerer | kimere001cle | 1899 | no g. | Detroit Tigers | Western League | Detroit, MI | |
| King | king--020--- | 1899 | 1 g. | San Francisco A's | California League | San Francisco, CA | |
| King | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| J. R. King | 1899 | no g. | Dayton Veterans | Interstate League | Dayton, OH | ||
| J.W. King | king--001jw- | 1899 | 5/10-8/12 | Taunton Herrings | New England League | Taunton, MA | |
| Billy Kinloch | kinloc001bil | 1899 | 37 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Billy Kinloch | kinloc001bil | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | ||
| Benjamin Kinney | kinney001ben | 1899 | New London Whalers | Connecticut State League | New London, CT | ||
| Frank Kitson | kitson001fra | 1899 | 45 g. | Baltimore | National League | Baltimore, MD | |
| Malachi Kittridge | kittri001mal | 1899 | 46 g. | Louisville | National League | Louisville, KY | |
| Malachi Kittridge | kittri001mal | 1899 | 44 g. | Washington | National League | Washington, DC | |
| Bill Kleiber | kleibe001bil | 1899 | 15 g. | San Jose Brewers | California League | San Jose, CA | |
| Bill Kleiber | kleibe001bil | 1899 | 32 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Red Kleinow | kleino001joh | 1899 | Sac. Ht. Aca.-WI | School | , | ||
| Kling | kling-001--- | 1899 | 5/12-5/14 | Oswego Grays | New York State League | Oswego, NY | |
| Johnny Kling | kling-001joh | 1899 | 18 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Johnny Kling | kling-001joh | 1899 | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | ||
| Johnny Kling | kling-001joh | 1899 | -8/2 | Emporia | Independent | Emporia, KS | |
| Charles Klobedanz | klobed001cha | 1899 | Wate.-MonitorAC | Independent | Waterbury, CT | ||
| Charles Klobedanz | klobed001cha | 1899 | 5/26 | Derby Lushers | Connecticut State League | Derby, CT | |
| Charles Klobedanz | klobed001cha | 1899 | 8/11-9/5 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Fred Klobedanz | klobed001fre | 1899 | 5 g. | Boston | National League | Boston, MA | |
| Fred Klobedanz | klobed001fre | 1899 | 5/28-9/4 | Worcester Farmers | Eastern League | Worcester, MA | |
| Gus Klopf | klopf-001gus | 1899 | 4/27-8/6 | Newark Colts | Atlantic League | Newark, NJ | |
| Gus Klopf | klopf-001gus | 1899 | 8/11-9/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Louis Knau | knau--001lou | 1899 | 5/1-9/17 | Dayton Veterans | Interstate League | Dayton, OH | |
| Phil Knell | knell-001phi | 1899 | 5/2-9/10 | Hartford Indians | Eastern League | Hartford, CT | |
| Charlie Knepper | kneppe002cha | 1899 | 5/2 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Charlie Knepper | kneppe002cha | 1899 | 5/26-9/26 | 27 g. | Cleveland | National League | Cleveland, OH |
| Joe Knight | knight002jos | 1899 | 17 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Joe Knight | knight002jos | 1899 | 6/15-6/20 | Buffalo Bisons | Western League | Buffalo, NY | |
| Julius Knoll | knoll-001jul | 1899 | 4/27-7/4 | Scranton Miners | Atlantic League | Scranton, PA | |
| Julius Knoll | knoll-001jul | 1899 | 7/13-9/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Punch Knoll | knoll-001cha | 1899 | +5/14+ | Evan.-People’s | Courier | Evansville, IN | |
| Dick Knox | knox--002ric | 1899 | 5/10-8/7 | Brockton Shoemakers | New England League | Brockton, MA | |
| Dick Knox | knox--002ric | 1899 | 8/9-8/27 | Albany Senators | New York State League | Albany, NY | |
| Dick Knox | knox--002ric | 1899 | 8/31-9/16 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Kochel | kochel001--- | 1899 | 5/14-7/4 | Utica Pentups | New York State League | Utica, NY | |
| Will Kohnle | kohnle001wil | 1899 | 41 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| Will Kohnle | kohnle001wil | 1899 | 6/7-7/5 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Eddie Kolb | kolb--001edd | 1899 | 10/15 | 1 g. | Cleveland | National League | Cleveland, OH |
| Fred Kossuch | kossuc001fre | 1899 | 1 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Joe Kostal | kostal001jos | 1899 | 5/3- | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Joe Kostal | kostal001jos | 1899 | 28 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Bill Krieg | krieg-001bil | 1899 | 30 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Edward Kripp | 1899 | Sacramento Gilt Edges | California League | Sacramento, CA | |||
| George Kromer | 1899 | , | |||||
| Otto Krueger | kruege002art | 1899 | 5/1-7/18 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Otto Krueger | kruege002art | 1899 | 7/20-7/30 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Otto Krueger | kruege002art | 1899 | 7/31- | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Otto Krueger | kruege002art | 1899 | 9/16- | 13 g. | Cleveland | National League | Cleveland, OH |
| Henry Krug | krug--001hen | 1899 | 86 g. | San Francisco A's | California League | San Francisco, CA | |
| Bill Kuehne | kuehne001bil | 1899 | 4/30-6/21 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Jimmy Kuhn | kuhn--001jam | 1899 | 5/12-6/10 | Utica Pentups | New York State League | Utica, NY | |
| Jimmy Kuhn | kuhn--001jam | 1899 | 6/24-6/28 | Oswego Grays | New York State League | Oswego, NY | |
| Jimmy Kuhn | kuhn--001jam | 1899 | 7/4-7/25 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Charlie Kuhns | kuhns-001cha | 1899 | 4/29-9/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Charlie Kuhns | kuhns-001cha | 1899 | -10/14 | 7 g. | Boston | National League | Boston, MA |
| Harry Kuran | kuran-001har | 1899 | Pleasanton KS | Independent | Pleasanton, KS | ||
| George LaChance | lachan001geo | 1899 | 125 g. | Baltimore | National League | Baltimore, MD | |
| Lackey | 1899 | 6 g. | San Diego Fullers | Southern California League | San Diego, CA | ||
| Lackey | 1899 | 3 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| Hi Ladd | ladd--001art | 1899 | 4/27-7/9 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Hi Ladd | ladd--001art | 1899 | 7/13-8/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Ladue | ladue-001--- | 1899 | 8/22 | Schenectady Electricians | New York State League | Schenectady, NY | |
| John Lafleur | lafleu001joh | 1899 | 60 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Nap Lajoie | lajoie001nap | 1899 | 77 g. | Philadelphia | National League | Philadelphia, PA | |
| Fred Lake | lake--001fre | 1899 | 5/10-9/4 | Manchester Manchesters | New England League | Manchester, NH | |
| Dan Lally | lally-001dan | 1899 | 4/28-9/10 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Donald Lally | lally-001don | 1899 | Umpire | IntSt | , | ||
| C.W. Lambert | lamber000cw- | 1899 | Pelzer SC | Independent | Pelzer, SC | ||
| C.W. Lambert | lamber000cw- | 1899 | Tarboro | Independent | Tarboro, NC | ||
| Pete Lamer | lamer-001pie | 1899 | 4/29-9/10 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Henry Lampe | lampe-001hen | 1899 | 5/2-8/29 | Worcester Farmers | Eastern League | Worcester, MA | |
| Lampkin | lampki001doc | 1899 | El Paso | Independent | El Paso, TX | ||
| Ernest Landgraf | landgr001ern | 1899 | NYC-Senators | s-p | New York, NY | ||
| Ernest Landgraf | landgr001ern | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Ernest Landgraf | landgr001ern | 1899 | Youngstown Little Giants | Interstate League | Youngstown, OH | ||
| William Landvoigt | 1899 | Neuenheim Col. | College | , | |||
| Lang | lang--014--- | 1899 | Susquehanna U. | College | , | ||
| Lang | lang--014--- | 1899 | Lafayette Col | College | , | ||
| Bill Lange | lange-001bil | 1899 | 4/14-10/15 | 107 g. | Chicago | National League | Chicago, IL |
| Fred Lange | lange-001fre | 1899 | 94 g. | Oakland Oaks | California League | Oakland, CA | |
| Bob Langsford | langsf001bob | 1899 | 40 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Bob Langsford | langsf001bob | 1899 | 6/18 | 1 g. | Louisville | National League | Louisville, KY |
| Mike Lantry | lantry001--- | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| Sam LaRocque | larocq001sam | 1899 | 4/27-7/7 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Arlie Latham | latham002wal | 1899 | 4/14- | 6 g. | Washington | National League | Washington, DC |
| Arlie Latham | latham002wal | 1899 | 7/3- | 95 g. | MLB Umpire | National League | , |
| Frank Lathrop | lathro001fra | 1899 | 11 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Frank Lathrop | lathro001fra | 1899 | 6/19-6/28 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Latimer | 1899 | +4/12+ | Fredericksburg Col | College | , | ||
| Gregg Latimer | latime001m-- | 1899 | Concord | Independent | Concord, NC | ||
| Tacks Latimer | latime001cli | 1899 | 5/1- | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Tacks Latimer | latime001cli | 1899 | -9/20 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Tacks Latimer | latime001cli | 1899 | 9 g. | Louisville | National League | Louisville, KY | |
| Billy Lauder | lauder001wil | 1899 | 151 g. | Philadelphia | National League | Philadelphia, PA | |
| August Lauer | lauer-001aug | 1899 | 5/12-5/26 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Ed Lauzon | lauzon001edw | 1899 | 39 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Ed Lauzon | lauzon001edw | 1899 | 6/12-7/18 | Oswego Grays | New York State League | Oswego, NY | |
| Ed Lauzon | lauzon001edw | 1899 | 7/21-9/9 | Utica Pentups | New York State League | Utica, NY | |
| Jack Law | law---001joh | 1899 | 5/1-9/20 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Ed Lawler | lawler001ed- | 1899 | Omaha-Brewers | Independent | Omaha, NE | ||
| Jack Lawler | lawler003joh | 1899 | 4/2-4/16 | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Jack Lawler | lawler003joh | 1899 | 5/17-7/29 | Derby Lushers | Connecticut State League | Derby, CT | |
| Jack Lawler | lawler003joh | 1899 | 8/3-9/9 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Jack Lawlor | lawlor001joh | 1899 | 5/12-9/9 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Fred Lawrence | 1899 | U. of Vermont | College | , | |||
| Mike Lawrence | lawren001mic | 1899 | 4/27-8/5 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Al Lawson | lawson001al- | 1899 | ?-6/ | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | |
| Al Lawson | lawson001al- | 1899 | 6/- | Kokomo/Mattoon | Indiana-Illinois League | Kokomo, IN | |
| Andy Lawson | 1899 | 5/6-6/ | Muncie/Crawford | Indiana-Illinois League | Muncie, IN | ||
| Andy Lawson | 1899 | 6/-6/ | Kokomo/Mattoon | Indiana-Illinois League | Kokomo, IN | ||
| Bob Lawson | lawson003rob | 1899 | Orange A. C. | s-p | Orange, NJ | ||
| Tommy Leach | leach-001tho | 1899 | 106 g. | Louisville | National League | Louisville, KY | |
| Tommy Leach | leach-001tho | 1899 | 6/14-6/20 | Worcester Farmers | Eastern League | Worcester, MA | |
| Tommy Leach | leach-001tho | 1899 | 106 g. | Louisville | National League | Louisville, KY | |
| Leahy | leahy-005--- | 1899 | 8/22 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Leahy | leahy-007--- | 1899 | 9/4 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Dan Leahy | leahy-002dan | 1899 | 4/27-8/6 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Dan Leahy | leahy-002dan | 1899 | 8/18-9/20 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Tom Leahy | leahy-002tho | 1899 | 4/29-9/10 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Tom Leahy | leahy-001tom | 1899 | 2 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Edward Leake | leake-001edw | 1899 | 21 g. | San Jose Brewers | California League | San Jose, CA | |
| David Leaman | 1899 | Vineland NJ | Independent | Vineland, NJ | |||
| Frank Lebarron | lebarr001fra | 1899 | 6/1-7/7 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| George Lee | lee---001geo | 1899 | 5/12-7/31 | Binghamton Bingos | New York State League | Binghamton, NY | |
| George Lee | lee---001geo | 1899 | 8/8-9/9 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| George Lee | lee---001geo | 1899 | 2 g. | Woodstock Bains | Canadian League | Woodstock, ON | |
| Jack Lee | lee---003joh | 1899 | Geneva OH | Independent | Geneva, OH | ||
| Samuel Lee | lee---003sam | 1899 | 3 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Stock Lee | 1899 | +8/16+ | Parsons | Independent | Parsons, KS | ||
| Ward Lee | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | |||
| Sam Leever | leever001sam | 1899 | 51 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Leftwich | 1899 | Rich.-Millhiser | Independent | Richmond, VA | |||
| Bruce Legge | legge-001bru | 1899 | 6/1-6/21 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Bill LeGrande | legran001w-- | 1899 | Trinity Col(Duke) | College | , | ||
| Herbert Lehr | lehr--002--- | 1899 | 4/20+ | U. of Michigan | College | , | |
| Herbert Lehr | lehr--002--- | 1899 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | ||
| Herbert Lehr | lehr--002--- | 1899 | -8/ | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | |
| Leidner | 1899 | NYC-Riverside | Independent | New York, NY | |||
| George Leidy | leidy-002geo | 1899 | 4/27-8/6 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Jim Leighton | leight001jam | 1899 | 5/6-5/8 | Dayton Veterans | Interstate League | Dayton, OH | |
| Bill Leith | leith-001bil | 1899 | 9/25 | 1 g. | Washington | National League | Washington, DC |
| Harry Leland | leland001har | 1899 | 22 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Carl Lempke | lempke001car | 1899-02 | CO Sch of Mines | College | , | ||
| Leonard | leonar018--- | 1899 | 14 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Frank Leonard | leonar001fra | 1899 | 4/28-9/10 | Worcester Farmers | Eastern League | Worcester, MA | |
| William Leonard | leonar011--- | 1899 | no g. | Schenectady Electricians | New York State League | Schenectady, NY | |
| Pete LePine | lepine002lou | 1899 | 5/10-8/8 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Pete LePine | lepine002lou | 1899 | 8/18-9/9 | Albany Senators | New York State League | Albany, NY | |
| Tom Letcher | letche001tom | 1899 | 4/30-9/16 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Sam Letherby | leathe001--- | 1899 | +10/7+ | Hooper NE | Independent | Hooper, NE | |
| Sam Letherby | leathe001--- | 1899 | Wayne | College | , | ||
| Charles Leverenz | levere001chr | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| David Levy | levy--001dav | 1899 | Umpire | Calif | , | ||
| Rube Levy | levy--001reu | 1899 | Umpire | Calif | , | ||
| Ed Lewee | lewee-001edw | 1899 | 5/2-6/9 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Ed Lewee | lewee-001edw | 1899 | 8/23-9/11 | Detroit Tigers | Western League | Detroit, MI | |
| Ted Lewis | lewis-001edw | 1899 | 29 g. | Boston | National League | Boston, MA | |
| Libby | libby-001--- | 1899 | 7/31-8/1 | Portland Phenoms | New England League | Portland, ME | |
| Ezra Lincoln | lincol001ezr | 1899 | 5/26-7/4 | Taunton Herrings | New England League | Taunton, MA | |
| J.W. Lindsley | lindsl001j-- | 1899 | Grand Rapids | Grand Rapids, MI | |||
| Perry Lipe | lipe--001per | 1899 | Syracuse Univ. | College | , | ||
| Perry Lipe | lipe--001per | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Mattoon, IL | ||
| Tom Lipp | lipp--001tom | 1899 | 5/15-6/3 | Utica Pentups | New York State League | Utica, NY | |
| Tom Lipp | lipp--001tom | 1899 | Ilion | Independent | Ilion, NY | ||
| Louis Lippert | lipper001lou | 1899 | 4/27-6/30 | Scranton Miners | Atlantic League | Scranton, PA | |
| Louis Lippert | lipper001lou | 1899 | 7/13-9/10 | Hartford Indians | Eastern League | Hartford, CT | |
| Jimmy Little | little001jim | 1899 | 15 g. | San Diego Fullers | Southern California League | San Diego, CA | |
| Jake Livingstone | living001jac | 1899 | 5/17-6/5 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Jake Livingstone | living001jac | 1899 | 6/10 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Jake Livingstone | living001jac | 1899 | 9/4-9/16 | New London Whalers | Connecticut State League | New London, CT | |
| Abel Lizotte | lizott001abe | 1899 | 4/29-8/7 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Harry Lloyd | lloyd-002har | 1899 | Cinc.-Gyms | Independent | Cincinnati, OH | ||
| Thomas Lloyd | lloyd-001tho | 1899 | Helena | Independent | Helena, MT | ||
| Harry Lochhead | lochhe001rob | 1899 | 4/16- | 148 g. | Cleveland | National League | Cleveland, OH |
| Harry Lochhead | lochhe001rob | 1899 | 3 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Charles Loercher | loerch001cha | 1899 | 7/29 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Tom Loftus | loftus002tom | 1899 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | ||
| Pete Lohman | lohman001geo | 1899 | 53 g. | London Cockneys | Canadian League | London, ON | |
| Pete Lohman | lohman001geo | 1899 | Sacramento Gilt Edges | California League | Sacramento, CA | ||
| Frank Lohr | lohr--001fra | 1899 | +7/9+ | Freeport IL | Independent | Freeport, IL | |
| Roy Loman | loman-001roy | 1899 | 4/16-7/5 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Roy Loman | loman-001roy | 1899 | Atchison | Independent | Atchison, KS | ||
| Long | 1899 | 5 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Herman Long | long--001her | 1899 | 145 g. | Boston | National League | Boston, MA | |
| Jim Long | long--002jim | 1899 | 38 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Jim Long | long--002jim | 1899 | 6/11-7/9 | Paterson Giants | Atlantic League | Paterson, NJ | |
| John Long | long--002joh | 1899 | 5/10-6/27 | Taunton Herrings | New England League | Taunton, MA | |
| G. Longley | longle001g-- | 1899 | 4/17-7/5 | Austin Senators | Texas Association | Austin, TX | |
| William Love | love--001bil | 1899 | Roch. Free Acad. | HighSchool | , | ||
| William Love | love--001bil | 1899-03 | Univ. Rochester | College | , | ||
| Bobby Lowe | lowe--002rob | 1899 | 152 g. | Boston | National League | Boston, MA | |
| Lowery | lowery001--- | 1899 | 7/27-7/30 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Lowery | lowery001--- | 1899 | 7/31-8/6 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Dennis Lowney | lowney001dan | 1899 | 5/1-9/20 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Fred Luchia | lucia-001fre | 1899 | 5/17-9/16 | New Haven Blues | Connecticut State League | New Haven, CT | |
| George Lufkin | lufkin001geo | 1899-01 | Wesleyan College | College | , | ||
| Baldo Luitich | luitic001bal | 1899 | 5/18-7/5 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Carl Lundgren | lundgr003car | 1899-02 | U. of Illinois | College | , | ||
| Billy Lush | lush--001wil | 1899 | 5/17-6/14+ | Derby Lushers | Connecticut State League | Derby, CT | |
| Billy Lush | lush--001wil | 1899 | 6/27-7/4 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Billy Lush | lush--001wil | 1899 | 7/6-8/15 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Billy Lush | lush--001wil | 1899 | 9/13-9/16 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Charlie Luskey | luskey001cha | 1899 | +7/15+ | Tarboro | Independent | Tarboro, NC | |
| Luke Lutenberg | lutenb001luk | 1899 | 33 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Luke Lutenberg | lutenb001luk | 1899 | 6/27-8/5 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Fred Luther | luther001fre | 1899 | no g. | Kansas City Blues | Western League | Kansas City, MO | |
| Ed Lynch | lynch-002edw | 1899 | no g. | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Henry Lynch | lynch-003hen | 1899 | 4/29-6/26 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Henry Lynch | lynch-003hen | 1899 | 7/8-9/9 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Mike Lynch | lynch-003mic | 1899 | 30 g. | Anaconda | MontSt | Anaconda, MT | |
| Mike Lynch | lynch-004mic | 1899-04 | Brown Univ. | College | , | ||
| Mike Lynch | lynch-004mic | 1899 | 5/18-9/15 | New London Whalers | Connecticut State League | New London, CT | |
| Lyon | lyon--005--- | 1899 | +6/10-6/24+ | New London Whalers | Connecticut State League | New London, CT | |
| Lyons | lyons-024--- | 1899 | 6/14 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Lyons | lyons-015--- | 1899 | 5/12-5/17 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Lyons | lyons-001--- | 1899 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | ||
| Chase Lyons | 1899 | Cuban Giants | Independent | Cuban, | |||
| Denny Lyons | lyons-002den | 1899 | -9/20 | 113 g. | Wheeling Stogies | Interstate League | Wheeling, WV |
| John Lyons | lyons-004joh | 1899 | 36 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Toby Lyons | lyons-001tob | 1899 | Umpire | NE | , | ||
| Toby Lyons | lyons-001tob | 1899 | 9/4-9/9 | Umpire | East | , | |
| Dad Lytle | lytle-001dad | 1899 | 5/1-7/4 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Dad Lytle | lytle-001dad | 1899 | 7/31-8/2 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Dad Lytle | lytle-001dad | 1899 | 8/13-9/20 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Mack | mack--017--- | 1899 | 7/27 | Oswego Grays | New York State League | Oswego, NY | |
| Connie Mack | mack--001con | 1899 | 9/4 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Eugene Mack | mack--001eug | 1899 | Brookfield | Independent | Brookfield, MA | ||
| Eugene Mack | mack--001eug | 1899 | 5/17-6/8 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Eugene Mack | mack--001eug | 1899 | 7/21-7/22 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Reddy Mack | mack--001red | 1899 | 24 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Ed Mackey | mackey001a-- | 1899 | 5/8-5/16 | Austin Senators | Texas Association | Austin, TX | |
| Ed Mackey | mackey001a-- | 1899 | Umpire | Tx | , | ||
| Edward Mackey | mackey002edw | 1899 | 5/25-7/2 | Utica Pentups | New York State League | Utica, NY | |
| Edward Mackey | mackey002edw | 1899 | 7/10-9/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Art Madison | madiso002art | 1899 | -8/22 | 42 g. | Pittsburgh | National League | Pittsburgh, PA |
| Charles Madison | 1899 | +8/16+ | Parsons | Independent | Parsons, KS | ||
| Bill Magee | magee-001wil | 1899 | 12 g. | Louisville | National League | Louisville, KY | |
| Bill Magee | magee-001wil | 1899 | 9 g. | Philadelphia | National League | Philadelphia, PA | |
| Bill Magee | magee-001wil | 1899 | 8 g. | Washington | National League | Washington, DC | |
| Jack Magee | magee-001t-- | 1899 | 5/18-9/16 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| George Magoon | magoon001geo | 1899 | 62 g. | Baltimore | National League | Baltimore, MD | |
| George Magoon | magoon001geo | 1899 | 59 g. | Chicago | National League | Chicago, IL | |
| Tom Maguire | maguir001tho | 1899 | 3 g. | Oakland Oaks | California League | Oakland, CA | |
| Mahaffey | mahaff014--- | 1899 | 5/9 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Mahaffey | mahaff012--- | 1899 | 6/24-6/27 | Dayton Veterans | Interstate League | Dayton, OH | |
| Jack Mahaffey | mahaff001joh | 1899 | +8/5+ | Canton OH | Independent | Canton, OH | |
| Jack Mahaffey | mahaff001joh | 1899 | South Bend Greens | Independent | South Bend, IN | ||
| Lou Mahaffey | mahaff002lou | 1899 | 11 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Henry Mahler | mahler001--- | 1899 | +8/20+ | Lanc.-Active | Independent | Lancaster, PA | |
| Jack Mahoney | mahone001jac | 1899 | 5/24 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Mike Mahoney | mahone001mik | 1899 | 5/11-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Mike Mahoney | mahone001mik | 1899 | 5/30-6/1 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Mike Mahoney | mahone001mik | 1899 | 6/6-6/29 | Taunton Herrings | New England League | Taunton, MA | |
| Mike Mahoney | mahone001mik | 1899 | 7/10 | Manchester Manchesters | New England League | Manchester, NH | |
| Mike Mahoney | mahone001mik | 1899 | 8/9-8/14 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Ernest Mains | mains-001ern | 1899 | 5/10-6/1 | Manchester Manchesters | New England League | Manchester, NH | |
| Willard Mains | mains-001wil | 1899 | 6/9-9/9 | Rome Romans | New York State League | Rome, NY | |
| John Malarkey | malark001joh | 1899 | 4/30-6/30 | Syracuse Stars | Eastern League | Syracuse, NY | |
| John Malarkey | malark001joh | 1899 | 7/4-9/9 | Utica Pentups | New York State League | Utica, NY | |
| John Malarkey | malark001joh | 1899 | 1 g. | Chicago | National League | Chicago, IL | |
| Mallet | 1899 | 2 g. | Los Angeles | SoCalif | Los Angeles, CA | ||
| Billie Malone | malone002bil | 1899 | Statesville NC | Independent | Statesville, NC | ||
| Billy Maloney | malone003wil | 1899 | no g. | New Haven Blues | Connecticut State League | New Haven, CT | |
| Billy Maloney | malone003wil | 1899 | N. Attleboro MA | Independent | North Attleboro, MA | ||
| Billy Maloney | malone003wil | 1899 | Attleboro | Independent | Attleboro, MA | ||
| Billy Maloney | malone003wil | 1899 | Knox Co. ME | Independent | Knox County, ME | ||
| Curley Maloney | malone005jam | 1899 | 6/22-7/5 | Austin Senators | Texas Association | Austin, TX | |
| Tommy Maloney | malone001tom | 1899 | 25 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Anthony Mangerina | manger001ant | 1899 | 2 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Anthony Mangerina | manger001ant | 1899 | 4 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Anthony Mangerina | manger001ant | 1899 | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| Anthony Mangerina | manger001ant | 1899 | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Henry Mangerina | manger001hen | 1899 | 28 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Pete Mangerina | 1899 | 2 g. | San Bernardino | Southern California League | San Bernardino, CA | ||
| Dolph Mangum | mangum000dol | 1899 | Concord | Independent | Concord, NC | ||
| Dolph Mangum | mangum000dol | 1899 | Wadesboro | Independent | Wadesboro, NC | ||
| Dolph Mangum | mangum000dol | 1899 | Concord | Independent | Concord, NC | ||
| Dolph Mangum | mangum000dol | 1899 | Wadesboro | Independent | Wadesboro, NC | ||
| Daniel Manley | manley001dan | 1899 | 5/17-7/3 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Daniel Manley | manley001dan | 1899 | Windsor Locks | Independent | Windsor Locks, CT | ||
| Thomas Manley | manley001tho | 1899 | Syracuse U. | College | , | ||
| Al Mannassau | mannas001al- | 1899 | 4/28-6/13 | Umpire | West | , | |
| Al Mannassau | mannas001al- | 1899 | 7/22-9/3 | Umpire | Amer | , | |
| Al Mannassau | mannas001al- | 1899 | MLB Umpire | National League | , | ||
| Harry Manner | manner001har | 1899 | +4/12+ | Fredericksburg Col | College | , | |
| Jim Manning | mannin001jim | 1899 | 4/27-9/11 | Kansas City Blues | Western League | Kansas City, MO | |
| Tommy Manning | mannin001tho | 1899 | +5/20-7/14 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Tommy Manning | mannin001tho | 1899 | 7/17-7/18 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Tommy Manning | mannin001tho | 1899 | 7/26 | Albany Senators | New York State League | Albany, NY | |
| Tommy Manning | mannin001tho | 1899 | 8/2-9/16 | Norwich Witches | Connecticut State League | Norwich, CT | |
| H. Mansfield | mansfi001h-- | 1899 | no g. | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| H. Mansfield | mansfi001h-- | 1899 | +7/15-8/ | Umpire | CtSt | , | |
| George Markley | markle001geo | 1899 | 4/22 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| George Markley | markle001geo | 1899 | 5/8-5/9 | Houston Buffaloes | Texas Association | Houston, TX | |
| George Markley | markle001geo | 1899 | 5/14-6/4 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Arthur Marmion | marmio001--- | 1899 | 5/18-5/24 | Houston Buffaloes | Texas Association | Houston, TX | |
| T. Maroney | marone001t-- | 1899 | Meri.-Dublins | Independent | Meriden, CT | ||
| T. Maroney | marone001t-- | 1899 | 8/14 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Marshall | marsha010--- | 1899 | 5/31 | Taunton Herrings | New England League | Taunton, MA | |
| Joe Marshall | marsha001jos | 1899 | Billings | Independent | Billings, MT | ||
| Martin | martin039--- | 1899 | 5/12-9/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Clint Martin | martin002cli | 1899 | 61 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Clint Martin | martin002cli | 1899 | Woodstock Bains | Canadian League | Woodstock, ON | ||
| Frank Martin | martin001fra | 1899 | -9/25 | 17 g. | New York | National League | New York, NY |
| James Martin | martin019jam | 1899 | Austin Senators | Texas Association | Austin, TX | ||
| Marx/Marks | marx--003--- | 1899 | 8/9-8/10 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Bill Massey | massey001bil | 1899 | 4/27-7/3 | Buffalo Bisons | Western League | Buffalo, NY | |
| Bill Massey | massey001bil | 1899 | 7/14-9/10 | Hartford Indians | Eastern League | Hartford, CT | |
| Bill Massey | massey001bil | 1899 | 9/13 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Christy Mathewson | mathew001chr | 1899 | 4/11- | Bucknell Univ. | College | , | |
| Christy Mathewson | mathew001chr | 1899 | 7/21-9/4 | Taunton Herrings | New England League | Taunton, MA | |
| Wilson Matthews | matthe004wil | 1899 | 7/3 | Houston Buffaloes | Texas Association | Houston, TX | |
| Wilson Matthews | matthe004wil | 1899 | Umpire | Tx | , | ||
| Al Maul | maul--001alb | 1899 | 4 g. | Brooklyn | National League | Brooklyn, NY | |
| Harry Maupin | maupin001har | 1899 | -7/1 | 5 g. | Cleveland | National League | Cleveland, OH |
| Harry Maupin | maupin001har | 1899 | Helena | MontSt | Helena, MT | ||
| Clifford Mayne | mayne-001--- | 1899 | 10/22-10/29 | San Bernardino | Southern California League | San Bernardino, CA | |
| Edward Mazena | mazena001edw | 1899 | 4/29-6/5 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Edward Mazena | mazena001edw | 1899 | 6/8-7/28 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Jimmy McAleer | mcalee001jam | 1899 | Youngstown Little Giants | Interstate League | Youngstown, OH | ||
| Sport McAllister | mcalli001lew | 1899 | 113 g. | Cleveland | National League | Cleveland, OH | |
| Tom McAndrew | mcandr002tho | 1899 | Dartmouth Col | College | , | ||
| Tom McAndrew | mcandr002tho | 1899 | 8/18-9/4 | Taunton Herrings | New England League | Taunton, MA | |
| Algie McBride | mcbrid001alg | 1899 | 64 g. | Cincinnati | National League | Cincinnati, OH | |
| Jack McBride | mcbrid001jac | 1899-00 | U. of Georgia | College | , | ||
| Jack McBride | mcbrid001jac | 1899 | Atlanta Harmony | Independent | Atlanta, GA | ||
| Pete McBride | mcbrid001pet | 1899 | Manhattan Col. | College | , | ||
| Pete McBride | mcbrid001pet | 1899 | -9/14 | 12 g. | St. Louis | National League | St. Louis, MO |
| Thomas McCafferty | mccaff002tho | 1899 | 5/15-8/8 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Thomas McCafferty | mccaff002tho | 1899 | 8/18 | Taunton Herrings | New England League | Taunton, MA | |
| Jerry McCall | mccall001jer | 1899 | 7/10-7/18 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Jerry McCall | mccall001jer | 1899 | 7/23-7/24 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Gene McCann | mccann001hen | 1899 | 48 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Gene McCann | mccann001hen | 1899 | 8/19-8/29 | Detroit Tigers | Western League | Detroit, MI | |
| McCarthy | mccart018--- | 1899 | 4/28-5/20 | Hartford Indians | Eastern League | Hartford, CT | |
| McCarthy | mccart021--- | 1899 | 5/17-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| McCarthy | mccart021--- | 1899 | 5/24-5/31 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| McCarthy | mccart016--- | 1899 | 6/5-6/13 | Manchester Manchesters | New England League | Manchester, NH | |
| McCarthy | mccart029--- | 1899 | 7/1 | Binghamton Bingos | New York State League | Binghamton, NY | |
| McCarthy | mccart040--- | 1899 | 5/31-7/19 | Schenectady Electricians | New York State League | Schenectady, NY | |
| McCarthy | mccart008--- | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Dan McCarthy | 1899 | Georgetown | College | , | |||
| Dennis McCarthy | mccart001den | 1899 | Geneva 3rdWard | Amat | Geneva, NY | ||
| Jack McCarthy | mccart003joh | 1899 | 139 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Joe McCarthy | mccart004jos | 1899 | 44 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Joe McCarthy | mccart004jos | 1899 | 11 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Pat McCauley | mccaul001pat | 1899 | 4/27-6/12 | Buffalo Bisons | Western League | Buffalo, NY | |
| Pat McCauley | mccaul001pat | 1899 | 6/21-7/16 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Pat McCauley | mccaul001pat | 1899 | 7/21-8/31 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Billy McCausland | mccaus001wil | 1899 | Salt Lake City | Independent | Salt Lake City, UT | ||
| Bill McClafferty | mcclaf001--- | 1899 | 8/23 | Norwich Witches | Connecticut State League | Norwich, CT | |
| McCleary | mcclea003--- | 1899 | 1 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| McClelland | 1899 | 12 g. | San Bernardino | Southern California League | San Bernardino, CA | ||
| John McCloskey | mcclos001joh | 1899 | 2 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| John McCloskey | mcclos001joh | 1899 | Umpire | So | , | ||
| John McCloskey | mcclos001joh | 1899 | Umpire | Tx | , | ||
| Harry McCloud | mcclou002har | 1899 | 5/12-8/3 | Portland Phenoms | New England League | Portland, ME | |
| Jack McConnell | mcconn002joh | 1899 | 32 g. | Chatham Reds | Canadian League | Chatham, ON | |
| Jack McConnell | mcconn002joh | 1899 | London Cockneys | Canadian League | London, ON | ||
| John McCord | mccord002--- | 1899 | 4/23-5/16 | Austin Senators | Texas Association | Austin, TX | |
| Barry McCormick | mccorm002wil | 1899 | 102 g. | Chicago | National League | Chicago, IL | |
| Jim McCormick | mccorm002jim | 1899 | 4/27-6/19 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Jim McCormick | mccorm002jim | 1899 | 6/22-8/2 | Newport Colts | New England League | Newport, RI | |
| James McCracken | mccrac001jam | 1899 | 5/10-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| James McCracken | mccrac001jam | 1899 | 5/24-5/30 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| Judge McCredie | mccred001wal | 1899 | 5/1-5/23 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Tom McCreery | mccree001tho | 1899 | 119 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Jimmy McDade | mcdade001jam | 1899 | , | ||||
| Mike McDermott | mcderm001mik | 1899 | 4/29-5/23 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Mike McDermott | mcderm001mik | 1899 | 5/30-9/9 | Springfield Ponies | Eastern League | Springfield, MA | |
| Sandy McDermott | mcderm001san | 1899 | -6/? | Umpire | Atl | , | |
| Will McDevitt | mcdevi001wil | 1899 | 4/16-6/3 | Houston Buffaloes | Texas Association | Houston, TX | |
| McDonald | mcdona045--- | 1899 | 8/14 | Schenectady Electricians | New York State League | Schenectady, NY | |
| McDonald | mcdona076--- | 1899 | 4/25 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Charles McDonald | mcdona004cha | 1899 | 4/30-5/3 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Charles McDonald | mcdona004cha | 1899 | 5/17-9/14 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Edward McDonald | mcdona003edw | 1899 | 5/30-8/16 | Rome Romans | New York State League | Rome, NY | |
| Jim McDonald | mcdona003jim | 1899 | Umpire | Calif | , | ||
| John McDonald | mcdona008joh | 1899-00 | Kutztown | College | , | ||
| Jeremiah McDonough | mcdono001jer | 1899 | 4/30-9/17 | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Sandy McDougal | mcdoug002joh | 1899 | 5/10-6/16 | Taunton Herrings | New England League | Taunton, MA | |
| Sandy McDougal | mcdoug002joh | 1899 | 7/11-9/4 | Manchester Manchesters | New England League | Manchester, NH | |
| Barney McFadden | mcfadd001ber | 1899 | Villanova College | College | , | ||
| Barney McFadden | mcfadd001ber | 1899 | Mauch Chunk | Independent | Mauch Chunk, PA | ||
| Guy McFadden | mcfadd001guy | 1899 | 71 g. | London Cockneys | Canadian League | London, ON | |
| Fred McFall | mcfall001fre | 1899 | 5/15-9/7 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| A. S.? McFarlan | 1899 | Muncie/Crawford | Indiana-Illinois League | Muncie, IN | |||
| Dan McFarlan | mcfarl002dan | 1899 | -9/29 | 1 g. | Brooklyn | National League | Brooklyn, NY |
| Dan McFarlan | mcfarl002dan | 1899 | 32 g. | Washington | National League | Washington, DC | |
| Chappie McFarland | mcfarl002cha | 1899 | 5/15-7/4 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Chappie McFarland | mcfarl002cha | 1899 | 7/11-9/8 | Albany Senators | New York State League | Albany, NY | |
| Ed McFarland | mcfarl002edw | 1899 | 96 g. | Philadelphia | National League | Philadelphia, PA | |
| Herm McFarland | mcfarl001her | 1899 | 4/27-9/11 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Monte McFarland | mcfarl001mon | 1899 | 5/1-9/19 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| McGann | mcgann003--- | 1899 | 5/17-6/8 | New London Whalers | Connecticut State League | New London, CT | |
| Dan McGann | mcgann001den | 1899 | 63 g. | Brooklyn | National League | Brooklyn, NY | |
| Dan McGann | mcgann001den | 1899 | 77 g. | Washington | National League | Washington, DC | |
| Chippy McGarr | mcgarr001chi | 1899 | -9/27 | 111 g. | MLB Umpire | National League | , |
| Bill McGill | mcgill004wil | 1899-07 | Friends Univ. | College | , | ||
| Charles McGill | mcgill002cha | 1899 | Loui.-Receiver | Independent | Louisville, KY | ||
| Charles McGill | mcgill002cha | 1899 | no g. | Syracuse Stars | Eastern League | Syracuse, NY | |
| Willie McGill | mcgill005wil | 1899 | Chic-Marquettes | Independent | Chicago, IL | ||
| Willie McGill | mcgill005wil | 1899 | 5/3-7/24 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Willie McGill | mcgill005wil | 1899 | 7/26-9/8 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Gus McGinnis | mcginn001gus | 1899 | 5/4-7/4 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Joe McGinnity | mcginn001jos | 1899 | 4/18- | 50 g. | Baltimore | National League | Baltimore, MD |
| McGraw | mcgraw001--- | 1899 | 6/22-6/30 | Newark Colts | Atlantic League | Newark, NJ | |
| John McGraw | mcgraw003joh | 1899 | 117 g. | Baltimore | National League | Baltimore, MD | |
| Eugene McGreevy | mcgree001eug | 1899 | 19 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Eugene McGreevy | mcgree001eug | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | ||
| Joe McGuckin | mcguck001joe | 1899 | 50 g. | San Jose Brewers | California League | San Jose, CA | |
| McGuire | mcguir006--- | 1899 | 5/12 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Deacon McGuire | mcguir006jam | 1899 | 58 g. | Washington | National League | Washington, DC | |
| Deacon McGuire | mcguir006jam | 1899 | 46 g. | Brooklyn | National League | Brooklyn, NY | |
| Frank McGuire | mcguir001fra | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Kokomo, IN | ||
| Jim McGuire | mcguir001jam | 1899 | 5/12-9/9 | Rome Romans | New York State League | Rome, NY | |
| Thomas McGuirk | mcguir004tho | 1899 | 5/12-5/17 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| McGunnigle | mcgunn001--- | 1899 | 6/14-6/15 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Bob McHale | mchale001bob | 1899 | 3 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Bob McHale | mchale001bob | 1899 | 4/29-5/17 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Bob McHale | mchale001bob | 1899 | 5/24-6/21 | Hartford Indians | Eastern League | Hartford, CT | |
| Bob McHale | mchale001bob | 1899 | +7/1-9/16 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| John McIlvaine | mcilva003joh | 1899 | 15 g. | Chatham Reds | Canadian League | Chatham, ON | |
| Irish McIlveen | mcilve001hen | 1899-06 | Penn State Col. | College | , | ||
| John McInnes | mcinne001joh | 1899 | 5/10 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Harry McIntire | mcinti001joh | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| Butch McIntyre | mcinty001cha | 1899 | 4/27-8/5 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Butch McIntyre | mcinty001cha | 1899 | +8/10-9/16 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| James McJames | mcjame001jam | 1899 | 37 g. | Brooklyn | National League | Brooklyn, NY | |
| Ed McKean | mckean001edw | 1899 | 67 g. | St. Louis | National League | St. Louis, MO | |
| Jimmy McKeever | mckeev001jam | 1899 | Umpire | Canadian | , | ||
| Kit McKenna | mckenn001kit | 1899 | 9 g. | Baltimore | National League | Baltimore, MD | |
| John McKenzie | mckenz002joh | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| James McKevitt | mckevi001jam | 1899 | 72 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| James McKevitt | mckevi001jam | 1899 | 8/9-8/22 | Buffalo Bisons | Western League | Buffalo, NY | |
| James McKevitt | mckevi001jam | 1899 | -9/20 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Byron McKibben | mckibb001byr | 1899 | 36 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Don McKinney | mckinn001don | 1899 | 5/15-6/24 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Don McKinney | mckinn001don | 1899 | 6/27-7/19 | Albany Senators | New York State League | Albany, NY | |
| Don McKinney | mckinn001don | 1899 | 7/23-7/31 | Kansas City Blues | Western League | Kansas City, MO | |
| George McLaughlin | mclaug003geo | 1899 | 68 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Lance McLaughlin | mclaug001lan | 1899 | 5 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Michael McLaughlin | 1899 | Umpire | Oh-In | , | |||
| Larry McLean | mclean001joh | 1899 | St. John Roses | Independent | St. John, NB | ||
| Larry McLean | mclean001joh | 1899 | Fredericton NB | Independent | Fredericton, NE | ||
| Sam McMackin | mcmack001sam | 1899 | 33 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Sam McMackin | mcmack001sam | 1899 | 6/11-7/5 | Houston Buffaloes | Texas Association | Houston, TX | |
| Dan McMahon | mcmaho002dan | 1899 | 5/10-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Dan McMahon | mcmaho002dan | 1899 | 5/30-6/1 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Jack McMahon | mcmaho006joh | 1899 | 4/27-7/4 | Scranton Miners | Atlantic League | Scranton, PA | |
| Jack McMahon | mcmaho006joh | 1899 | no g. | Syracuse Stars | Eastern League | Syracuse, NY | |
| John McMakin | mcmaki001joh | 1899 | Union SC | Independent | Union, SC | ||
| John McMakin | mcmaki001joh | 1899 | Rome GA | Independent | Rome, GA | ||
| Barney McManus | mcmanu001bar | 1899 | 5/12-7/30 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Barney McManus | mcmanu001bar | 1899 | 8/1-9/9 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Frank McManus | mcmanu001fra | 1899 | 4/28-8/5 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Frank McManus | mcmanu001fra | 1899 | 9/14- | 7 g. | Washington | National League | Washington, DC |
| Bill McNamara | mcnama001wil | 1899 | 5/12-8/3 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Thomas McNamara | 1899 | Umpire | WestA | , | |||
| John McNamera | 1899 | Ilion | Independent | Ilion, NY | |||
| Hugh McNeeley | mcneel001har | 1899 | 5/7-7/9 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Hugh McNeeley | mcneel001har | 1899 | Butte | Mont | Butte, MT | ||
| McNeet | mcneet001--- | 1899 | 5/18-5/24 | Norwich Witches | Connecticut State League | Norwich, CT | |
| McNeet | mcneet001--- | 1899 | 5/31-6/1 | Manchester Manchesters | New England League | Manchester, NH | |
| J. McNelly | 1899 | Billings | Independent | Billings, MT | |||
| Frank McPartlin | mcpart002fra | 1899 | 4/28-8/6 | Newark Colts | Atlantic League | Newark, NJ | |
| Frank McPartlin | mcpart002fra | 1899 | 8/22 | 1 g. | New York | National League | New York, NY |
| Frank McPartlin | mcpart002fra | 1899 | 9/4-9/15 | Derby Lushers | Connecticut State League | Derby, CT | |
| Bid McPhee | mcphee001bid | 1899 | 112 g. | Cincinnati | National League | Cincinnati, OH | |
| John McPherson | mcpher002joh | 1899-00 | Washington NJ | Independent | Washington, NJ | ||
| James McQuaid | mcquai001jam | 1899 | 4/27-5/26 | Buffalo Bisons | Western League | Buffalo, NY | |
| James McQuaid | mcquai001jam | 1899 | 6/1-7/22 | Worcester Farmers | Eastern League | Worcester, MA | |
| James McQuaid | mcquai001jam | 1899 | 7/27-9/9 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Mart McQuaid | mcquai001mor | 1899 | 5/27-6/30 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Mart McQuaid | mcquai001mor | 1899 | 20 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| James McShane | mcshan001j-- | 1899 | no g. | Marion | InSt | Marion, IN | |
| Carl McVey | mcvey-001car | 1899 | 4/27-8/6 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Carl McVey | mcvey-001car | 1899 | Mansfield Haymakers | Interstate League | Mansfield, OH | ||
| Mattie McVicker | mcvick001mat | 1899 | 4/28-5/21 | Kansas City Blues | Western League | Kansas City, MO | |
| Mattie McVicker | mcvick001mat | 1899 | 5/29-8/27 | Buffalo Bisons | Western League | Buffalo, NY | |
| Mattie McVicker | mcvick001mat | 1899 | KC-Armour | Independent | Kansas City, MO | ||
| Gil Mead | mead--001--- | 1899 | 13 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Gil Mead | mead--001--- | 1899 | 1 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Phil Meade | meade-001phi | 1899 | +7/15+ | Tarboro | Independent | Tarboro, NC | |
| Pat Meaney | meaney002pat | 1899 | 4/27-6/27 | Newark Colts | Atlantic League | Newark, NJ | |
| Pat Meaney | meaney002pat | 1899 | 7/8-9/16 | Derby Lushers | Connecticut State League | Derby, CT | |
| Pat Meaney | meaney002pat | 1899 | 2 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Harry Meek | meek--001her | 1899-00 | did not play | , | |||
| Jouett Meekin | meekin002jou | 1899 | 18 g. | New York | National League | New York, NY | |
| Jouett Meekin | meekin002jou | 1899 | 13 g. | Boston | National League | Boston, MA | |
| Dutch Meier | meier-001art | 1899-02 | Princeton Univ. | College | , | ||
| John Menefee | menefe001joh | 1899 | 4/28-9/10 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Tom Menefee | menefe001tho | 1899 | 4 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| D. Menniger | 1899 | no g. | New Haven Blues | Connecticut State League | New Haven, CT | ||
| Win Mercer | mercer001geo | 1899 | 108 g. | Washington | National League | Washington, DC | |
| Elmer Meredith | meredi001elm | 1899 | 4/29-5/24 | Kansas City Blues | Western League | Kansas City, MO | |
| Jack Merriman | merrim001jac | 1899 | 5/10-5/12 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| Jack Merriman | merrim001jac | 1899 | 5/31 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Bill Merritt | merrit001bil | 1899 | , | ||||
| Bill Merritt | merrit001bil | 1899 | 10/15 | 1 g. | Boston | National League | Boston, MA |
| George Merritt | merrit002geo | 1899 | Paterson Giants | Atlantic League | Paterson, NJ | ||
| Sam Mertes | mertes001sam | 1899 | 117 g. | Chicago | National League | Chicago, IL | |
| Tom Messitt | messit001tom | 1899 | 5/12-7/30 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Tom Messitt | messit001tom | 1899 | 8/1-9/9 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Tom Messitt | messit001tom | 1899 | 9/14-9/20 | 3 g. | Louisville | National League | Louisville, KY |
| James Metz | 1899 | no g. | Youngstown Little Giants | Interstate League | Youngstown, OH | ||
| Charles Meyers | meyers003cha | 1899 | 41 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| Charlie Middleton | middle002cha | 1899 | 8/22- | 13 g. | Dayton Veterans | Interstate League | Dayton, OH |
| Miles | miles-001--- | 1899 | 5/15-5/25 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Eddie Miles | miles-001edw | 1899 | 74 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Miller | miller076--- | 1899 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | ||
| Al Miller | miller003alb | 1899 | 5/1-9/17 | Dayton Veterans | Interstate League | Dayton, OH | |
| Bert Miller | miller002ber | 1899 | 7/1 | Dayton Veterans | Interstate League | Dayton, OH | |
| Bert Miller | miller002ber | 1899 | 7/11 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Bert Miller | miller002ber | 1899 | 18 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Charles Miller | miller019cha | 1899 | Quincy/Dubuque | Western Association | Quincy, IL | ||
| Connie Miller | miller001con | 1899 | New Haven Blues | Connecticut State League | New Haven, CT | ||
| Dan Miller | 1899 | Dubois PA | Independent | Dubois, PA | |||
| Dusty Miller | miller004cha | 1899 | 81 g. | Cincinnati | National League | Cincinnati, OH | |
| Dusty Miller | miller004cha | 1899 | 10 g. | St. Louis | National League | St. Louis, MO | |
| Dusty Miller | miller001dak | 1899 | 4/30-8/27 | Kansas City Blues | Western League | Kansas City, MO | |
| George Miller | miller005geo | 1899 | 4/28-5/4 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| George Miller | miller005geo | 1899 | 5/?-9/17 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Joseph Miller | miller011jos | 1899 | Chicago Columbia | Independent | Chicago, IL | ||
| Kohly Miller | miller001koh | 1899 | 5/1-9/20 | New Castle Quakers | Interstate League | New Castle, PA | |
| Pete Miller | miller001pet | 1899 | 5/10-9/4 | Portland Phenoms | New England League | Portland, ME | |
| R. Miller | miller005r-- | 1899 | ?/ | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Ralph Miller | miller007ral | 1899 | -5/26 | 6 g. | Baltimore | National League | Baltimore, MD |
| Ralph Miller | miller007ral | 1899 | 7/12-9/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Roscoe Miller | miller001ros | 1899 | 5/1- | 45 g. | Mansfield Haymakers | Interstate League | Mansfield, OH |
| Pat Millerick | miller002pat | 1899 | 5/10-9/4 | Newport Colts | New England League | Newport, RI | |
| Mike Millett | millet001mic | 1899 | 4/17-7/4 | Austin Senators | Texas Association | Austin, TX | |
| Mike Millett | millet001mic | 1899 | 7/22-8/4 | Newark Colts | Atlantic League | Newark, NJ | |
| Mills | mills-049--- | 1899 | Wake Forest U. | College | , | ||
| Mills | mills-049--- | 1899 | Wilmington NC | Independent | Wilmington, NC | ||
| Sam Mills | mills-001sam | 1899 | 40 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Sam Mills | mills-001sam | 1899 | 6/11-7/9 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Sam Mills | mills-001sam | 1899 | 7/10-8/5 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Willie Mills | mills-004wil | 1899 | 5/12-9/8 | Utica Pentups | New York State League | Utica, NY | |
| Hal Miner | miner-001hal | 1899 | 4/29-7/10 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Dan Minnehan | minneh001dan | 1899 | 5/31-6/21 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Harry Minnehan | minneh001har | 1899 | 5/3- | New Castle Quakers | Interstate League | New Castle, PA | |
| Jack Miran | miran-001joh | 1899 | 5/17-7/10 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Jack Miran | miran-001joh | 1899 | 7/14-9/14 | Derby Lushers | Connecticut State League | Derby, CT | |
| W. K. Mitchell | 1899 | no g. | Buffalo Bisons | Western League | Buffalo, NY | ||
| C.E. Mizell | mizell000ce- | 1899 | +7/12+ | Hamilton NC | Independent | Hamilton, NC | |
| C.E. Mizell | mizell000ce- | 1899 | +8/16+ | Williamston NC | Independent | Williamston, NC | |
| Lem Mobley | mobley001--- | 1899 | 4/18-6/6 | Austin Senators | Texas Association | Austin, TX | |
| Homer Mock | mock--001hom | 1899 | did not play | , | |||
| Frank Moffett | moffet001fra | 1899 | Knoxville Reds | Independent | Knoxville, TN | ||
| Kid Mohler | mohler001kid | 1899 | 73 g. | London Cockneys | Canadian League | London, ON | |
| Carlton Molesworth | molesw001car | 1899 | 5/12-9/9 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Mondo | 1899 | 2 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| Monohan | monoha001--- | 1899 | 7/20 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Bill Monroe | monroe000bil | 1899 | Chicago Unions | Independent | Chicago, IL | ||
| Roy Montgomery | montgo001roy | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| Alfred Moore | moore-001alf | 1899 | 6/2-6/21 | Taunton Herrings | New England League | Taunton, MA | |
| Alfred Moore | moore-001alf | 1899 | Umpire | NE | , | ||
| Carl Moore | moore-007car | 1899 | Phillipsburg KS | Independent | Phillipsburg, KS | ||
| Carl Moore | moore-007car | 1899 | +9/4+ | Smith Center KS | Independent | Smith Center, KS | |
| Earl Moore | moore-001ear | 1899 | 7/30-9/17 | Dayton Veterans | Interstate League | Dayton, OH | |
| Edward Moore | moore-009edw | 1899 | 5/25 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Jack Moore | moore-002jac | 1899 | 19 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Mose Moore | moore-001mos | 1899 | 28 g. | Los Angeles | SoCalif | Los Angeles, CA | |
| Wade Moore | moore-001wad | 1899 | Kansas Univ. | College | , | ||
| Zeke Moore | moore-001zek | 1899 | 5/31-7/3 | Springfield Ponies | Eastern League | Springfield, MA | |
| Moran | moran-029--- | 1899 | 8/18-8/29 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Moran | moran-029--- | 1899 | Umpire | CtSt | , | ||
| Augie Moran | moran-002aug | 1899 | 5/20-6/10 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Pat Moran | moran-002pat | 1899 | 4/29-9/10 | Montreal Royals | Eastern League | Montreal, QC | |
| Morcaw | morcaw001--- | 1899 | 6/5 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Morgan | morgan001--- | 1899 | 5/17-5/25+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Morgan | morgan025--- | 1899 | 5/27-6/10 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Morgan | morgan001--- | 1899 | 6/20-6/21+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Ezra Morgan | morgan001ezr | 1899 | 5/17-9/16 | New London Whalers | Connecticut State League | New London, CT | |
| Otis Morgan | morgan001oti | 1899 | 7 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Otis Morgan | morgan001oti | 1899 | Quincy/Dubuque | Western Association | Dubuque, IA | ||
| Otis Morgan | morgan001oti | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| Ed Moriarty | moriar001edw | 1899 | CT Agricultural | College | , | ||
| Morris | morris046--- | 1899 | 28 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Kid Morris | morris010wil | 1899 | 5/2-5/6 | Dayton Veterans | Interstate League | Dayton, OH | |
| Robert Morris | morris008rob | 1899 | 5/12-6/8 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Walter Morris | morris010joh | 1899-00 | Univ. of Texas | College | , | ||
| Bill Morrison | morris008wil | 1899 | 31 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| John Morrison | morris014joh | 1899 | 5/12-5/18 | Manchester Manchesters | New England League | Manchester, NH | |
| John Morrison | morris014joh | 1899 | 5/27 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Morrissey | morris094--- | 1899 | 5/25-6/16 | Albany Senators | New York State League | Albany, NY | |
| Morrissey | morris094--- | 1899 | 6/26-7/14 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Frank Morrissey | morris003mic | 1899 | 5/13-6/6 | Newport Colts | New England League | Newport, RI | |
| Frank Morrissey | morris003mic | 1899 | 6/9-9/4 | Manchester Manchesters | New England League | Manchester, NH | |
| S. Morrissey | 1899 | no g. | Cortland Wagonmakers | New York State League | Cortland, NY | ||
| William Morrow | morrow002wil | 1899 | 49 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| William Morrow | morrow002wil | 1899 | 31 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Charles Morse | morse-001cha | 1899 | 5/1-9/9 | Rochester Bronchos | Eastern League | Rochester, NY | |
| F. Morton | 1899-00 | , | |||||
| Doc Moskiman | moskim001wil | 1899 | 85 g. | Oakland Oaks | California League | Oakland, CA | |
| Moss | moss--001--- | 1899 | 8/19 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Charles Moss | moss--003cha | 1899 | 4/27-5/4 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Charles Moss | moss--003cha | 1899 | 5/22-7/9 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Charles Moss | moss--003cha | 1899 | 7/14-9/16 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Frank Motz | motz--001fra | 1899 | 4/27-9/11 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Mowry | mowry-003--- | 1899 | 8/18-9/2 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Timothy Moynihan | moynih001tim | 1899 | 5/17-5/29 | Taunton Herrings | New England League | Taunton, MA | |
| Mulcahy | mulcah003--- | 1899 | 7/1 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Cy Mulkey | mulkey001cyr | 1899 | 4/16-5/18 | Houston Buffaloes | Texas Association | Houston, TX | |
| Cy Mulkey | mulkey001cyr | 1899 | 6/9-7/5 | Austin Senators | Texas Association | Austin, TX | |
| Tony Mullane | mullan001ton | 1899 | 5/31-6/16 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Dominic Mullaney | mullan002dom | 1899 | 4/29-6/19 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Otho Mullen | mullen010--- | 1899-01 | M. 31st VI Regt. | Philippines | , | ||
| Max Muller | muller002max | 1899 | 79 g. | San Francisco A's | California League | San Francisco, CA | |
| Mulligan | 1899 | Ilion | Independent | Ilion, NY | |||
| Michael Mullin | mullen001mic | 1899 | 5/12-9/9 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Tim Murnane | murnan001tim | 1899 | President | CtSt | , | ||
| Murphy | murphy090--- | 1899 | 7/29-9/4 | Newport Colts | New England League | Newport, RI | |
| Connie Murphy | murphy002con | 1899 | 5/10-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| Connie Murphy | murphy002con | 1899 | 5/24-5/31 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| Connie Murphy | murphy002con | 1899 | 7/5-7/8 | Springfield Ponies | Eastern League | Springfield, MA | |
| Danny Murphy | murphy006dan | 1899 | No. Attleboro MA | Independent | North Attleboro, MA | ||
| Danny Murphy | murphy006dan | 1899 | 6/1-6/3 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Danny Murphy | murphy006dan | 1899 | 8/2-8/4 | Worcester Farmers | Eastern League | Worcester, MA | |
| Dave Murphy | murphy001dav | 1899 | No. Adams MA | Independent | North Adams, MA | ||
| Ed Murphy | murphy005edw | 1899 | 4/27-8/3 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Ed Murphy | murphy005edw | 1899 | 8/10-9/10 | Montreal Royals | Eastern League | Montreal, QC | |
| Frank Murphy | murphy004fra | 1899-00 | St. John's(Fordham) | College | , | ||
| Frank Murphy | murphy004fra | 1899 | 7/24-9/9 | New London Whalers | Connecticut State League | New London, CT | |
| John Murphy | murphy004fra | 1899 | New London Whalers | Connecticut State League | New London, CT | ||
| Martin Murphy | murphy006mar | 1899 | 5 g. | Oakland Oaks | California League | Oakland, CA | |
| Martin Murphy | murphy006mar | 1899 | 2 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Thomas Murphy | murphy001tho | 1899 | 5/10-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Thomas Murphy | murphy001tho | 1899 | 5/30-6/1 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Thomas Murphy | murphy001tho | 1899 | 6/6-8/14 | Manchester Manchesters | New England League | Manchester, NH | |
| Thomas Murphy | murphy001tho | 1899 | 8/31 | Manchester Manchesters | New England League | Manchester, NH | |
| Thomas Murphy | murphy001tho | 1899 | 9/4 | Portland Phenoms | New England League | Portland, ME | |
| Yale Murphy | murphy001yal | 1899 | Elmira | Atl | Elmira, NY | ||
| Yale Murphy | murphy001yal | 1899 | Atlantic City | Independent | Atlantic City, NJ | ||
| Murray | murray016--- | 1899 | 5/20-6/1 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Billy Murray | murray007wil | 1899 | 4/29-9/8 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Jim Murray | murray008jam | 1899 | 4/16-6/3 | Houston Buffaloes | Texas Association | Houston, TX | |
| Jim Murray | murray008jam | 1899 | 6/5-7/5 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| John Murray | murray012joh | 1899 | Ilion | Independent | Ilion, NY | ||
| John Murtaugh | murtau001jos | 1899 | Cornell | College | , | ||
| Myers | myers-042--- | 1899 | 37 g. | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Myers | myers-006--- | 1899 | 8/20- | Dayton Veterans | Interstate League | Dayton, OH | |
| Bade Myers | myers-002wil | 1899 | 4/30-9/17 | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Bert Myers | myers-001ber | 1899 | 4/29-9/9 | Springfield Ponies | Eastern League | Springfield, MA | |
| C. Myers | myers-003c-- | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Phil Nadeau | nadeau001phi | 1899 | 5/1-9/19 | New Castle Quakers | Interstate League | New Castle, PA | |
| Paul Nagle | nagle-001lef | 1899 | 4/16-7/5 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Namack | 1899 | lost this | University | , | |||
| Namack | 1899 | Phelps NY AC | Amat | Phelps, NY | |||
| William Nance | nance-001wil | 1899 | 4/28-9/11 | Minneapolis Millers | Western League | Minneapolis, MN | |
| D. Napp | napp--001d-- | 1899 | Dayton Veterans | Interstate League | Dayton, OH | ||
| Billy Nash | nash--001bil | 1899 | 4/27-5/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Billy Nash | nash--001bil | 1899 | 5/18-5/23 | Hartford Indians | Eastern League | Hartford, CT | |
| Billy Nattress | nattre001wil | 1899 | 5/1-9/20 | New Castle Quakers | Interstate League | New Castle, PA | |
| Neath | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| George Needham | 1899 | Umpire | West | , | |||
| Tom Needham | needha001tho | 1899 | Tecumseh MI | Independent | Tecumseh, MI | ||
| Henry Nelson | nelson001hen | 1899 | 8/2-8/4 | Portland Phenoms | New England League | Portland, ME | |
| Jack Nelson | nelson002jac | 1899 | 5/15-9/9 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| John Nelson | nelson008joh | 1899 | +6/4+ | Cuban X Giants | Independent | Cuban, | |
| Ray Nelson | nelson001ray | 1899 | 7/10-9/2 | Taunton Herrings | New England League | Taunton, MA | |
| Mike Neville | nevill001mic | 1899 | 5/12-7/21 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Horace Newenham | newenh001hor | 1899 | Colby College | College | , | ||
| Horace Newenham | newenh001hor | 1899 | 6/29 | Portland Phenoms | New England League | Portland, ME | |
| Newhouse | 1899 | 5/-5/ | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | ||
| Newman | newman011--- | 1899 | 8/11 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Tom News | news--001tho | 1899 | 5/10-6/17 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Albert Newton | newton001alb | 1899-02 | Bloomsburg Col. | College | , | ||
| Albert Newton | newton001alb | 1899 | Springville NY | Independent | Springville, NY | ||
| Doc Newton | newton001eus | 1899 | 4/28-9/11 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Nichols | 1899 | Willimantic CT | Independent | Willimantic, CT | |||
| Art Nichols | nichol001art | 1899 | 17 g. | Chicago | National League | Chicago, IL | |
| Kid Nichols | nichol006cha | 1899 | 42 g. | Boston | National League | Boston, MA | |
| Nicholson | nichol044--- | 1899 | 7/4-7/5 | Dayton Veterans | Interstate League | Dayton, OH | |
| Parson Nicholson | nichol001par | 1899 | 15 g. | Wheeling Stogies | Interstate League | Wheeling, WV | |
| George Nicol | nicol-001geo | 1899 | 4/28-9/11 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Tom Niland | niland001tom | 1899 | 6/13-6/23 | Manchester Manchesters | New England League | Manchester, NH | |
| Bill Niles | niles-001bil | 1899 | 5/1-9/20 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Charles Nipper | nipper001cha | 1899 | 4/16-6/13 | Houston Buffaloes | Texas Association | Houston, TX | |
| George Noblit | noblit001geo | 1899 | 5/10-9/4 | Portland Phenoms | New England League | Portland, ME | |
| Bingey Nolan | nolan-001bin | 1899 | 6/15 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Joe Nonemaker | nonama001jos | 1899 | +6/2+ | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | |
| Noon | noon--001--- | 1899 | 1 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Tub Noonan | noonan001tub | 1899 | 14 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Jerry Nops | nops--001jer | 1899 | 34 g. | Baltimore | National League | Baltimore, MD | |
| Frank Norcom | norcom001fra | 1899 | 4/30- | 23 g. | Fort Wayne Indians | Interstate League | Fort Wayne, IN |
| Frank Norcom | norcom001fra | 1899 | 19 g. | Woodstock Bains | Canadian League | Woodstock, ON | |
| Lou Nordyke | nordyk001lou | 1899 | 43 g. | Chatham Reds | Canadian League | Chatham, ON | |
| Ed Norton | norton001ed- | 1899 | 5/10-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| Arthur Noyes | noyes-001art | 1899 | 5 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Harry Noyes | noyes-001har | 1899 | 5/10-7/7 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Harry Noyes | noyes-001har | 1899 | 7/11-7/15 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Harry Noyes | noyes-001har | 1899 | 7/24-9/14 | Manchester Manchesters | New England League | Manchester, NH | |
| Jack Nugent | nugent001joh | 1899 | 5/19-8/8 | Albany Senators | New York State League | Albany, NY | |
| Jack Nugent | nugent001joh | 1899 | 8/12-8/19 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Jack Nugent | nugent001joh | 1899 | 9/9 | Albany Roches | Independent | Albany, NY | |
| Charlie Nyce | nyce--002cha | 1899 | 4/29-9/10 | Providence Clamdiggers | Eastern League | Providence, RI | |
| O'Brien | obrien037--- | 1899 | 5/10-5/12 | Manchester Manchesters | New England League | Manchester, NH | |
| O'Brien | obrien064--- | 1899 | 9/4 | Portland Phenoms | New England League | Portland, ME | |
| O'Brien | obrien024--- | 1899 | 6/7-8/26 | New London Whalers | Connecticut State League | New London, CT | |
| O'Brien | obrien008--- | 1899 | 7/14-7/17 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Buck O'Brien | obrien005tho | 1899 | Brockton West Enders | s-pro | Brockton, MA | ||
| Frank O'Brien | obrien005fra | 1899 | Umpire | IntSt | , | ||
| George O'Brien | obrien001geo | 1899 | 5/17-8/10+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| George O'Brien | obrien001geo | 1899 | 8/15-8/26 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Jack O'Brien | obrien005joh | 1899 | 4/14- | 127 g. | Washington | National League | Washington, DC |
| John O'Brien | obrien009joh | 1899 | 39 g. | Baltimore | National League | Baltimore, MD | |
| John O'Brien | obrien009joh | 1899 | 79 g. | Pittsburgh | National League | Pittsburgh, PA | |
| John O'Brien | obrien016joh | 1899 | 4/11- | Bucknell College | College | , | |
| John O'Brien | obrien016joh | 1899 | 6/6-6/17 | Newport Colts | New England League | Newport, RI | |
| Pat O'Brien | obrien006pat | 1899 | 5/22-9/4 | Newport Colts | New England League | Newport, RI | |
| Patrick O'Brien | obrien007pat | 1899 | 41 g. | Woodstock Bains | Canadian League | Woodstock, ON | |
| Patrick O'Brien | obrien007pat | 1899 | 19 g. | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Pete O'Brien | obrien001pet | 1899 | 5/12-9/9 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Tom O'Brien | obrien001tom | 1899 | 5/12-8/17 | Rome Romans | New York State League | Rome, NY | |
| Tom O'Brien | obrien002tom | 1899 | 151 g. | New York | National League | New York, NY | |
| O'Connell | 1899 | Norfolk | Norfolk, VA | ||||
| John O'Connell | oconne003joh | 1899 | 4/27-6/14 | Scranton Miners | Atlantic League | Scranton, PA | |
| John O'Connell | oconne003joh | 1899 | 6/24-7/13 | Utica Pentups | New York State League | Utica, NY | |
| John O'Connell | oconne003joh | 1899 | 7/14-9/9 | Albany Senators | New York State League | Albany, NY | |
| O'Connor | oconno036--- | 1899 | 29 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| O'Connor | 1899 | 40 g. | Calif | , | |||
| O'Connor | oconno025--- | 1899 | 8/22 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Jack O'Connor | oconno006joh | 1899 | 84 g. | St. Louis | National League | St. Louis, MO | |
| Mike O'Connor | oconno003mik | 1899 | 41 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Mike O'Connor | oconno003mik | 1899 | Montgomery Senators/Dallas Scrappers | Southern League | Dallas, TX | ||
| Mike O'Connor | oconno003mik | 1899 | 6/16-7/2 | Austin Senators | Texas Association | Austin, TX | |
| Mike O'Connor | oconno001mik | 1899 | 8 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Mike O'Connor | oconno002mik | 1899 | 40 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| William O'Connor | oconno001wil | 1899 | 6/29-7/5 | Worcester Farmers | Eastern League | Worcester, MA | |
| William O'Connor | oconno001wil | 1899 | 7/11-8/8 | Pawtucket Colts | New England League | Pawtucket, RI | |
| William O'Connor | oconno001wil | 1899 | 8/18-9/4 | Taunton Herrings | New England League | Taunton, MA | |
| Artie O'Dea | odea--001art | 1899 | 36 g. | San Jose Brewers | California League | San Jose, CA | |
| O'Farrell | ofarre001--- | 1899 | 1 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Hal O'Hagan | ohagen001har | 1899 | 4/29-9/9 | Rochester Bronchos | Eastern League | Rochester, NY | |
| O'Hara | ohara-012--- | 1899 | 7/27-8/12 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| O'Hara | ohara-007--- | 1899 | Johnstown | Independent | Johnstown, PA | ||
| O'Hara | ohara-007--- | 1899 | 8/23-9/9 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Kid O'Hara | ohara-001jam | 1899-02 | Georgetown Col. | College | , | ||
| Francis O'Loughlin | olough001sil | 1899 | 4/28-9/9 | Umpire | East | , | |
| O'Neil | oneil-022--- | 1899 | 7/23 | Rochester Bronchos | Eastern League | Rochester, NY | |
| O'Neil | oneil-005--- | 1899 | 8/23 | Montreal Royals | Eastern League | Montreal, QC | |
| O'Neil | oneil-013--- | 1899 | 7/30 | Oswego Grays | New York State League | Oswego, NY | |
| Harry O'Neil | oneil-000har | 1899 | , | ||||
| J.F. O'Neil | oneil-002j-- | 1899 | St. John NB | Independent | St. John, NB | ||
| J.F. O'Neil | oneil-002j-- | 1899 | 8/26-9/5 | Worcester Farmers | Eastern League | Worcester, MA | |
| James O'Neil | 1899 | Ilion | Independent | Ilion, NY | |||
| Jack O'Neill | oneill008joh | 1899 | Hartford Indians | Eastern League | Hartford, CT | ||
| Jack O'Neill | oneill008joh | 1899 | 5/4-7/4 | Scranton Miners | Atlantic League | Scranton, PA | |
| Jack O'Neill | oneill008joh | 1899 | 7/10-9/8 | Syracuse Stars | Eastern League | Syracuse, NY | |
| John O'Neill | oneill004joh | 1899 | 9/6- | 2 g. | New York | National League | New York, NY |
| Mike O'Neill | oneill002mic | 1899 | 7/1 | Scranton Miners | Atlantic League | Scranton, PA | |
| Peaches O'Neill | oneill002phi | 1899-02 | Notre Dame U. | College | , | ||
| Tip O'Neill | oneill001tip | 1899 | 8/29-9/10 | Umpire | East | , | |
| Tip O'Neill | oneill001nor | 1899 | 55 g. | San Francisco A's | California League | San Francisco, CA | |
| Jim O'Rourke | orourk003jam | 1899 | 5/17-9/16 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| John O'Rourke | orourk003joh | 1899 | 5/10-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| John O'Rourke | orourk003joh | 1899 | 5/24-5/31 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| Thomas O'Rourke | orourk003tho | 1899 | 6/26-8/7 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Tim O'Rourke | orourk003tim | 1899 | Augusta | Independent | Augusta, ME | ||
| Tim O'Rourke | orourk003tim | 1899 | 36 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Tim O'Rourke | orourk003tim | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Tony Odegard | odegar001--- | 1899 | +6/3+ | Jordan MN | Independent | Jordan, MN | |
| Fred Odwell | odwell001fre | 1899 | 4/27-8/5 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Fred Odwell | odwell001fre | 1899 | 8/8-9/10 | Montreal Royals | Eastern League | Montreal, QC | |
| John Ogee | ogee--001joh | 1899 | Dayton Veterans | Interstate League | Dayton, OH | ||
| Reginald Ollre | ollre-001rox | 1899 | Hous.-Cawthons | Independent | Houston, TX | ||
| Al Orth | orth--001alb | 1899 | 22 g. | Philadelphia | National League | Philadelphia, PA | |
| Billy Osborne | osborn007wil | 1899 | 5/20-5/26 | Brockton Shoemakers | New England League | Brockton, MA | |
| Billy Osborne | osborn007wil | 1899 | 5/31 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| Frank Owen | owen--001fra | 1899 | 9/10 | Detroit Tigers | Western League | Detroit, MI | |
| Owens | owens-028--- | 1899 | 8 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Red Owens | owens-003tho | 1899 | +5/20-7/15 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Red Owens | owens-003tho | 1899 | 7/17-7/18 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Red Owens | owens-003tho | 1899 | 7/25 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Red Owens | owens-003tho | 1899 | 7/28- | 8 g. | Philadelphia | National League | Philadelphia, PA |
| Red Owens | owens-003tho | 1899 | +8/9-9/16 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Ed Pabst | pabst-001ed- | 1899 | 40 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Ed Pabst | pabst-001ed- | 1899 | 6/11-7/9 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Ed Pabst | pabst-001ed- | 1899 | 7/10-7/31 | Newark Colts | Atlantic League | Newark, NJ | |
| Ed Pabst | pabst-001ed- | 1899 | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | ||
| Russ Pace | pace--001c-- | 1899 | 1 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Russ Pace | pace--001c-- | 1899 | 50 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Dick Padden | padden001ric | 1899 | 4/14- | 134 g. | Washington | National League | Washington, DC |
| George Page | page--003geo | 1899 | 4/16-7/5 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Allie Paige | paige-002alb | 1899 | BaltCity | , | |||
| Charles Palmer | palmer004cha | 1899 | 4/17-4/29 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| John Pappalau | pappal001joh | 1899 | 5/1-9/9 | Springfield Ponies | Eastern League | Springfield, MA | |
| John Pappalau | pappal001joh | 1899 | 9/14 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Al Pardee | pardee001alb | 1899 | 5/3-9/8 | Kansas City Blues | Western League | Kansas City, MO | |
| Freddy Parent | parent001fre | 1899 | 5/17-7/13 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Freddy Parent | parent001fre | 1899 | 7/14 - | 2 g. | St. Louis | National League | St. Louis, MO |
| Freddy Parent | parent001fre | 1899 | 7/18-9/16 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Harley Parker | parker001har | 1899 | 4/30-8/4 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Jay Parker | parker001har | 1899 | no g. | Minneapolis Millers | Western League | Minneapolis, MN | |
| Jay Parker | parker002jay | 1899 | 9/27 | 1 g. | Pittsburgh | National League | Pittsburgh, PA |
| H. Leslie Parlette | 1899 | no g. | Newport Colts | New England League | Newport, RI | ||
| Tom Parrott | parrot002tho | 1899 | Portland OR AC | Independent | Portland, OR | ||
| Tom Parrott | parrot002tho | 1899 | 6/4-6/12 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Bones Parvin | parvin001fra | 1899 | 13 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| Bones Parvin | parvin001fra | 1899 | 6/12-9/20 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Harvey Pastorius | pastor001har | 1899 | 6/10-8/1 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Harvey Pastorius | pastor001har | 1899 | 8/19-9/17 | Dayton Veterans | Interstate League | Dayton, OH | |
| Casey Patten | patten001cas | 1899 | 4/28-8/4 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Casey Patten | patten001cas | 1899 | 8/13-9/9 | Kansas City Blues | Western League | Kansas City, MO | |
| John Patterson | patter007joh | 1899 | Chicago Columbia | Independent | Chicago, IL | ||
| Roy Patterson | patter001roy | 1899 | Duluth MN | s-p | Duluth, MN | ||
| Roy Patterson | patter001roy | 1899 | 5/10 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Roy Patterson | patter001roy | 1899 | 8/27-9/9 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Van Patterson | patter001van | 1899 | 6/13-6/22 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Patton | 1899 | no g. | Pawtucket Colts | New England League | Pawtucket, RI | ||
| Emile Pautot | pautot001e-- | 1899 | 8/4- | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Dudley Payne | payne-001dud | 1899 | Hot Springs Ark | Independent | Hot Springs, AR | ||
| Harley Payne | payne-005har | 1899 | 5 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Frank Pears | pears-002fra | 1899 | 22 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Chick Pedroes | pedro-001cha | 1899 | 5/12 | Oswego Grays | New York State League | Oswego, NY | |
| William Peeples | peeple001wil | 1899 | 9 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| William Peeples | peeple001wil | 1899 | 40 g. | Oakland Oaks | California League | Oakland, CA | |
| Heinie Peitz | peitz-001hen | 1899 | 94 g. | Cincinnati | National League | Cincinnati, OH | |
| Bob Pender | pender001rob | 1899 | -9/20 | 139 g. | Youngstown Little Giants | Interstate League | Youngstown, OH |
| Ike Pendleton | pendle001isa | 1899 | 4/17-4/18 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| G. Pennington | pennin000g-- | 1899 | +7/15+ | Tarboro | Independent | Tarboro, NC | |
| A.R. Penny | penney001a-- | 1899 | 5/17-? | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Frank Pequinney | pequin001fra | 1899 | 4/16-7/5 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Fred Perkins | perkin001fre | 1899 | 5/10-8/5 | Brockton Shoemakers | New England League | Brockton, MA | |
| Archie Persons | person001arc | 1899-00 | USMA | College | , | ||
| Eddie Persons | person001edw | 1899 | Wilmington NC | Independent | Wilmington, NC | ||
| Pat Pettee | pettee001pat | 1899 | Umpire | NE | , | ||
| George Pfanmiller | pfanmi001geo | 1899 | 5/2- | 31 g. | Richmond Bluebirds | Atlantic League | Richmond, VA |
| George Pfanmiller | pfanmi001geo | 1899 | 8/9-9/8 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Dan Pfenninger | pfenni001dan | 1899 | 5/17-9/16 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Dick Phelan | phelan001dic | 1899 | 9 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Jack Phelan | phelan001jac | 1899 | Umpire | Tx | , | ||
| Ed Phelps | phelps002edw | 1899 | 4/29-9/8 | Springfield Ponies | Eastern League | Springfield, MA | |
| Deacon Phillippe | philli001cha | 1899 | 4/21 - | 44 g. | Louisville | National League | Louisville, KY |
| Bill Phillips | philli005wil | 1899 | 34 g. | Cincinnati | National League | Cincinnati, OH | |
| Marr Phillips | philli003mar | 1899 | 64 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Bill Phyle | phyle-002wil | 1899 | 10 g. | Chicago | National League | Chicago, IL | |
| Wiley Piatt | piatt-001wil | 1899 | 4/14- | 40 g. | Philadelphia | National League | Philadelphia, PA |
| Jack Pickard | pickar001jac | 1899 | 41 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Jack Pickard | pickar001jac | 1899 | Woodstock Bains | Canadian League | Woodstock, ON | ||
| Ollie Pickering | picker001oli | 1899 | 4/28-5/13 | Buffalo Bisons | Western League | Buffalo, NY | |
| Ollie Pickering | picker001oli | 1899 | 5/19-7/17 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Ollie Pickering | picker001oli | 1899 | 7/18-9/10 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Dave Pickett | picket003dav | 1899 | 5/12-9/9 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Pietto | 1899 | no g. | Meriden Silverites | Connecticut State League | Meriden, CT | ||
| Fred Pilcher | pilche001fre | 1899 | Joplin | Independent | Joplin, MO | ||
| George Pingree | pingre001geo | 1899 | Dartmouth Col. | College | , | ||
| Pinke | 1899 | 30 g. | Calif | , | |||
| Togie Pittinger | pittin001cha | 1899 | 4/29-7/7 | Springfield Ponies | Eastern League | Springfield, MA | |
| Jonah Plake | plake-001jon | 1899 | 3 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Jonah Plake | plake-001jon | 1899 | 13 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Jonah Plake | plake-001jon | 1899 | 1 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Jonah Plake | plake-001jon | 1899 | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Jonah Plake | plake-001jon | 1899 | 34 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Eddie Plank | plank-003edw | 1899 | Gettysburg PA | Independent | Gettysburg, PA | ||
| Harry Platt | platt-002har | 1899 | 3 g. | Oakland Oaks | California League | Oakland, CA | |
| Harry Platt | platt-002har | 1899 | 1 g. | San Francisco A's | California League | San Francisco, CA | |
| Eddie Pleiss | pleiss001edw | 1899 | 5/12-7/19 | Rome Romans | New York State League | Rome, NY | |
| Eddie Pleiss | pleiss001edw | 1899 | Ilion | Independent | Ilion, NY | ||
| Tom Plowman | 1899 | U. Alabama | College | , | |||
| Walter Plymat | plymat001--- | 1899 | Minne.-Comets | Independent | Minneapolis, MN | ||
| Ed Poole | poole-001edw | 1899 | 5/2-9/20 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Jap Poor | poor--001jas | 1899 | Wabash | Indiana-Illinois League | Wabash, IN | ||
| Fred Popkay | popkay001fre | 1899 | 22 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Fred Popkay | popkay001fre | 1899 | Umpire | Canadian | , | ||
| Odie Porter | porter001odi | 1899-00 | Indiana Univ. | College | , | ||
| Bill Pounds | pounds001jea | 1899 | 5/18-6/9 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Bill Pounds | pounds001jea | 1899 | 6/12-6/24 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Abner Powell | powell001abn | 1899 | 12 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Abner Powell | powell001abn | 1899 | 6/17-7/8 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Abner Powell | powell001abn | 1899 | 7/20 | Newark Colts | Atlantic League | Newark, NJ | |
| Jack Powell | powell007joh | 1899 | 49 g. | St. Louis | National League | St. Louis, MO | |
| Doc Powers | powers002mic | 1899 | 49 g. | Louisville | National League | Louisville, KY | |
| Doc Powers | powers002mic | 1899 | 14 g. | Washington | National League | Washington, DC | |
| W.A. Powers | powers001w-- | 1899 | 1 g. | Stratford Poets | Canadian League | Stratford, ON | |
| George Prentiss | prenti002geo | 1899 | 5/17-9/16 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Preston | presto005--- | 1899 | 6/28 | Austin Senators | Texas Association | Austin, TX | |
| Walt Preston | presto002wal | 1899 | 5/1-8/17 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Walt Preston | presto002wal | 1899 | 8/26-9/11 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Hugh Price | price-001hug | 1899 | 18 g. | London Cockneys | Canadian League | London, ON | |
| Hugh Price | price-001hug | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| Miller Proctor | 1899 | , | |||||
| Billy Prout | prout-002wil | 1899 | +4/30+ | Cinc.-Gyms | Independent | Cincinnati, OH | |
| Billy Prout | prout-002wil | 1899 | Charleston WV | Independent | Charleston, WV | ||
| Billy Prout | prout-002wil | 1899 | 8/20 | Dayton Veterans | Interstate League | Dayton, OH | |
| John Puhl | puhl--002joh | 1899 | 5/31 | 1 g. | New York | National League | New York, NY |
| John Puhl | puhl--002joh | 1899 | +5/20-6/30 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Nate Pulsifer | pulsif001nat | 1899 | Columbia Univ. | College | , | ||
| Nate Pulsifer | pulsif001nat | 1899 | 6/12-9/4 | Portland Phenoms | New England League | Portland, ME | |
| John Purrell | purrel001joh | 1899 | New Castle Quakers | Interstate League | New Castle, PA | ||
| Royce Pussington | pussin001roy | 1899 | 8/14-9/4 | Portland Phenoms | New England League | Portland, ME | |
| John Putnam | putnam001joh | 1899 | 5/10-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| Gus Pyne | pyne--001gus | 1899 | 86 g. | San Francisco A's | California League | San Francisco, CA | |
| Frank Quigley | quigle001fra | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Robert Quillian | quilli001rob | 1899 | Atlanta Harmony | Independent | Atlanta, GA | ||
| Frank Quinlan | quinla001fra | 1899 | 5/11-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Frank Quinlan | quinla001fra | 1899 | 5/30-6/1 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Larry Quinlan | quinla001law | 1899 | 5/10-5/23 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Larry Quinlan | quinla001law | 1899 | 6/21-9/16 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Quinn | 1899 | no g. | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | ||
| Quinn | quinn-042--- | 1899 | 5/30 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Quinn | quinn-003--- | 1899 | 5/20-5/30 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Bobby Quinn | quinn-006rob | 1899 | Ashtabula | Independent | Ashtabula, OH | ||
| Frank Quinn | quinn-006fra | 1899 | 89 g. | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Frank Quinn | quinn-006fra | 1899 | 8/9-10/2 | 12 g. | Chicago | National League | Chicago, IL |
| Jack Quinn | quinn-004joh | 1899 | 5/30-7/14 | Brockton Shoemakers | New England League | Brockton, MA | |
| Jack Quinn | quinn-004joh | 1899 | 7/21-7/22 | Portland Phenoms | New England League | Portland, ME | |
| Joe Quinn | quinn-003jos | 1899 | 147 g. | Cleveland | National League | Cleveland, OH | |
| S. Rabbitt | rabbit001s-- | 1899 | 5/12-5/17 | Albany Senators | New York State League | Albany, NY | |
| James Raclett | raclet001jam | 1899 | Mansfield Haymakers | Interstate League | Mansfield, OH | ||
| William Radcliffe | radcli001wil | 1899 | Pitt.-D.C. & A.C. | Independent | Pittsburgh, PA | ||
| William Radcliffe | radcli001wil | 1899 | no g. | Buffalo Bisons | Western League | Buffalo, NY | |
| Rademaker | radema001--- | 1899 | 9/10 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Paul Radford | radfor002pau | 1899 | Franklin MA | Independent | Franklin, MA | ||
| Bill Raffert | raffer001wil | 1899 | +6/2+ | Wabash | Indiana-Illinois League | Wabash, IN | |
| Jack Rafter | rafter001joh | 1899 | 5/17-9/9 | Albany Senators | New York State League | Albany, NY | |
| Jack Raih | raih--001joh | 1899 | 31 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Jack Raih | raih--001joh | 1899 | Quincy/Dubuque | Western Association | Dubuque, IA | ||
| William Ramp | ramp--001wil | 1899 | Muncie/Crawford | Indiana-Illinois League | Muncie, IN | ||
| Hank Ramsey | ramsey001hen | 1899 | 5/12-9/4 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Randolph | randol005--- | 1899 | Emp.-Gabriel | Independent | Emporia, KS | ||
| Phil Ranz | ranz--000--- | 1899 | Cinc.amat | Amat | Cincinnati, OH | ||
| Otto Rapp | rapp--001ott | 1899 | 5/12-5/20 | Brockton Shoemakers | New England League | Brockton, MA | |
| Sam Rapp | rapp--001--- | 1899 | 4/30-5/3 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Sam Rapp | rapp--001--- | 1899 | 5/26-6/10 | Dayton Veterans | Interstate League | Dayton, OH | |
| Sam Rapp | rapp--010--- | 1899 | 7/20-7/23 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| William Rapp | 1899-00 | Span-Amer | , | ||||
| Rathbun | rathbu001--- | 1899 | Grand Rapids | Independent | Grand Rapids, MI | ||
| Harley Rawson | rawson001har | 1899 | Colby College | College | , | ||
| Harley Rawson | rawson001har | 1899 | 5/17-9/16 | Derby Lushers | Connecticut State League | Derby, CT | |
| John Ray | ray---006joh | 1899 | 4/25-6/5 | Austin Senators | Texas Association | Austin, TX | |
| Fred Raymer | raymer001fre | 1899 | 4/28-7/19 | Kansas City Blues | Western League | Kansas City, MO | |
| Fred Raymer | raymer001fre | 1899 | Oklahoma City | Independent | Oklahoma City, OK | ||
| Harry Raymond | raymon002har | 1899 | 6/10-7/4 | Utica Pentups | New York State League | Utica, NY | |
| Harry Raymond | raymon002har | 1899 | 7/14-8/9 | Albany Senators | New York State League | Albany, NY | |
| Harry Raymond | raymon002har | 1899 | 8/17-9/4 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Montie Rea | rea---000mon | 1899-00 | +4/7+ | U. Virginia | College | , | |
| Denny Reardon | reardo001d-- | 1899 | 5/20-9/15 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| George Reed | reed--003geo | 1899 | 37 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| George Reed | reed--003geo | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | ||
| George Reese | reese-002geo | 1899 | 33 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| George Reese | reese-002geo | 1899 | Quincy/Dubuque | Western Association | Dubuque, IA | ||
| George Regan | regan-001geo | 1899 | 5/12-7/4 | Manchester Manchesters | New England League | Manchester, NH | |
| Joe Regan | regan-001joe | 1899 | +5/20-9/16 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Jack Reich | reich-001jac | 1899 | no g. | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Andy Reid | reid--002and | 1899 | 55 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Andy Reid | reid--002and | 1899 | Woodstock Bains | Canadian League | Woodstock, ON | ||
| Bill Reid | reid--002wil | 1899 | 75 g. | Chatham Reds | Canadian League | Chatham, ON | |
| Bill Reid | reid--002wil | 1899 | London Cockneys | Canadian League | London, ON | ||
| Bill Reidy | reidy-001wil | 1899 | 2 g. | Brooklyn | National League | Brooklyn, NY | |
| Bill Reidy | reidy-001wil | 1899 | 5/1-9/11 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Reilly | reilly016--- | 1899 | 5/18-5/30 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Charlie Reilly | reilly003cha | 1899 | 5/17-8/10 | Kansas City Blues | Western League | Kansas City, MO | |
| Charlie Reilly | reilly003cha | 1899 | Butte | MontSt | Butte, MT | ||
| David Reilly | reilly002dav | 1899 | 5/27-7/17 | Newport Colts | New England League | Newport, RI | |
| David Reilly | reilly002dav | 1899 | 8/31 | Portland Phenoms | New England League | Portland, ME | |
| J. Reilly | reilly002j-- | 1899 | 9/16 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Josh Reilly | reilly002wil | 1899 | 85 g. | San Francisco A's | California League | San Francisco, CA | |
| Tom Reilly | reilly004tho | 1899 | 5/17-9/16 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Reinacher | reinac001--- | 1899 | West NY Field Club | Independent | West, NY | ||
| Reinacher | reinac001--- | 1899 | New York AC | Independent | New York, NY | ||
| Doc Reisling | reisli001fra | 1899 | 4/28-5/16 | Hartford Indians | Eastern League | Hartford, CT | |
| Doc Reisling | reisli001fra | 1899 | 5/27-9/16 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Edward Reitz | 1899 | Chicago-Amat | Chicago, IL | ||||
| George Reitz | reitz-001geo | 1899 | Chic.-Spauldings | semi-pro | Chicago, IL | ||
| Henry Reitz | reitz-001hen | 1899 | -6/3 | 35 g. | Pittsburgh | National League | Pittsburgh, PA |
| John Reitz | reitz-001joh | 1899 | 3 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| William Reitz | 1899 | Chic.-Amateur | Chicago, IL | ||||
| George Rettger | rettge002geo | 1899 | 4/28-9/11 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Louis Reuning | 1899 | Ilion | Independent | Ilion, NY | |||
| Sam Reust | reust-001sam | 1899 | -8/2 | Emporia | Independent | Emporia, KS | |
| Reynolds | 1899 | Baltimore Giants | Independent | Baltimore, MD | |||
| Jess Reynolds | reynol004jes | 1899 | 4/30-6/4 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Jess Reynolds | reynol004jes | 1899 | 6/19 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Jess Reynolds | reynol004jes | 1899 | Umpire | Tx | , | ||
| Jesse Reynolds | reynol001jes | 1899 | Decatur IN | Independent | Decatur, IN | ||
| Louis Reynolds | 1899 | Chicago Columbia | Independent | Chicago, IL | |||
| Billy Rhines | rhines001wil | 1899 | 10 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Rhoe | rhoe--002--- | 1899 | 6/2 | Houston Buffaloes | Texas Association | Houston, TX | |
| Billy Rice | rice--002w-- | 1899 | 4 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Billy Rice | rice--002w-- | 1899 | 11 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Bill Richardson | richar006wil | 1899 | 4/17-6/18 | Austin Senators | Texas Association | Austin, TX | |
| Danny Richardson | richar002dan | 1899 | 12 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| S. W. Richardson | 1899 | Hamline Univ. | College | , | |||
| John Richter | richte001joh | 1899 | 4/27-8/5 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| John Richter | richte001joh | 1899 | 8/9-9/10 | Montreal Royals | Eastern League | Montreal, QC | |
| Joe Rickert | ricker001jos | 1899 | 4/29-9/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Dorsey Riddlemoser | riddle002dor | 1899 | 8/22 | 1 g. | Washington | National League | Washington, DC |
| George Rieman | rieman001geo | 1899 | 5/1-8/3 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Joseph Rieman | rieman001jos | 1899 | 5/1-9/17 | Dayton Veterans | Interstate League | Dayton, OH | |
| Charles Riley | riley-001cha | 1899 | 87 g. | San Francisco A's | California League | San Francisco, CA | |
| David Riley | riley-001dav | 1899 | 4/27-5/21 | Paterson Giants | Atlantic League | Paterson, NJ | |
| John Riley | riley-005joh | 1899 | 5/12-7/26 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Frank Rinn | rinn--002fra | 1899 | 4/27-8/6 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Dud Risley | risley001dud | 1899 | 4/28-7/4 | Scranton Miners | Atlantic League | Scranton, PA | |
| Dud Risley | risley001dud | 1899 | 7/11-8/4 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Dud Risley | risley001dud | 1899 | 8/20-9/10 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Claude Ritchey | ritche001cla | 1899 | 148 g. | Louisville | National League | Louisville, KY | |
| Joseph Ritchie | 1899 | 14 g. | Freeport LI | Independent | Freeport, | ||
| William Ritchie | ritchi002wil | 1899 | 5/10-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| William Ritchie | ritchi002wil | 1899 | 5/30-6/1 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Lew Ritter | ritter002lew | 1899 | 6 g. | Quincy/Dubuque | Western Association | Dubuque, IA | |
| Lew Ritter | ritter002lew | 1899 | 5/10-8/23 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Rivera | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Rivera | 1899 | 1 g. | San Bernardino | Southern California League | San Bernardino, CA | ||
| Rivers | rivers001--- | 1899 | 5/17 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| John Roach | roach-003joh | 1899 | , | ||||
| Mike Roach | roach-001mik | 1899 | 4/27-8/6 | Newark Colts | Atlantic League | Newark, NJ | |
| Mike Roach | roach-001mik | 1899 | 8/10-10/12 | 24 g. | Washington | National League | Washington, DC |
| Skel Roach | roach-001rud | 1899 | 5/2-9/18 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Skel Roach | roach-001rud | 1899 | 8/9 | 1 g. | Chicago | National League | Chicago, IL |
| Fred Roat | roat--001fre | 1899 | 6/2-8/31 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Clay Robb | robb--001cla | 1899 | 21 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Clay Robb | robb--001cla | 1899 | Guelph Maple Leafs | Canadian League | Guelph, ON | ||
| Vince Robbins | robbin003--- | 1899 | FW-Shamrocks | Independent | Fort Wayne, IN | ||
| Bill Roberts | robert017wil | 1899 | 5/12 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Bill Roberts | robert017wil | 1899 | Amsterdam | Independent | Amsterdam, NY | ||
| Fred Robertson | 1899 | Yale Univ. | College | , | |||
| Fred Robertson | 1899 | Poughkeepsie NY | Independent | Poughkeepsie, NY | |||
| Robinson | 1899 | 3 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Robinson | 1899 | 5/1 | Wheeling Stogies | Interstate League | Wheeling, WV | ||
| Robinson | robins014--- | 1899 | Toledo Mud Hens | Interstate League | Toledo, OH | ||
| Jack Robinson | robins006joh | 1899-02 | Harvard Univ. | College | , | ||
| Wilbert Robinson | robins001wil | 1899 | 108 g. | Baltimore | National League | Baltimore, MD | |
| Rodden | 1899 | 2 g. | San Bernardino | Southern California League | San Bernardino, CA | ||
| Billy Rodden | rodden001bil | 1899 | 36 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Rodgers | 1899 | Baltimore Giants | Independent | Baltimore, MD | |||
| Joe Roe | roe---001jos | 1899 | +10/14+ | Sunnyside MO | Independent | Sunnyside, MO | |
| Emmett Rogers | rogers002emm | 1899 | Ilion | Independent | Ilion, NY | ||
| Jim Rogers | rogers001jim | 1899 | 4/29-5/9 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Jim Rogers | rogers001jim | 1899 | +5/20-9/16 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Terry Rogers | rogers001ter | 1899 | +5/20-6/21+ | Norwich Witches | Connecticut State League | Norwich, CT | |
| Terry Rogers | rogers001ter | 1899 | 7/1-9/16 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| George Rohe | rohe--001geo | 1899 | , | ||||
| George Rohe | rohe--001geo | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| Pat Rollins | rollin001hen | 1899 | 30 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| C. Root | root--001c-- | 1899 | no g. | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Jack Rose | rose--002jac | 1899 | 5/17-? | Norwich Witches | Connecticut State League | Norwich, CT | |
| Rosie Rosebraugh | rosebr001ros | 1899 | -7/5 | 2 g. | Pittsburgh | National League | Pittsburgh, PA |
| Rosie Rosebraugh | rosebr001ros | 1899 | -9/20 | 15 g. | Mansfield Haymakers | Interstate League | Mansfield, OH |
| A. Rosenbach | rosenb001a-- | 1899 | Akron | Independent | Akron, NY | ||
| Art Ross | ross--001art | 1899 | 5/12-9/9 | Rome Romans | New York State League | Rome, NY | |
| Art Ross | ross--001art | 1899 | 1 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Ernie Ross | ross--001ern | 1899 | Woodstock ON | Independent | Woodstock, ON | ||
| George Ross | ross--002rus | 1899 | 5/12-6/14 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Bill Rotes | rhodes001bil | 1899 | Pottstown PA | Independent | Pottstown, PA | ||
| Andy Roth | roth--001and | 1899 | 5/14-9/9 | Oswego Grays | New York State League | Oswego, NY | |
| Bobby Rothermel | rother001bob | 1899 | 34 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Bobby Rothermel | rother001bob | 1899 | 6/18-7/15 | 10 g. | Baltimore | National League | Baltimore, MD |
| Bobby Rothermel | rother001bob | 1899 | 7/21-8/11 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Bobby Rothermel | rother001bob | 1899 | 8/23-8/31 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Bobby Rothermel | rother001bob | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| C. Rothermel | rother001c-- | 1899 | +5/7+ | Pottsville PA | Independent | Pottsville, PA | |
| Wilson Rothermel | rother002wil | 1899 | Dickinson Col. | College | , | ||
| Adam Rothfuss | rothfu001ada | 1899 | 5/7-9/6 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Jack Rothfuss | rothfu001jac | 1899 | 4/28-8/23 | Kansas City Blues | Western League | Kansas City, MO | |
| Elmer Roussey | rousse002elm | 1899 | 5/23 | Schenectady Electricians | New York State League | Schenectady, NY | |
| A.B. Royce | royce-001a-- | 1899 | 31 g. | Chatham Reds | Canadian League | Chatham, ON | |
| Frank Rudderham | rudder001fra | 1899 | 5/12-9/8 | Rome Romans | New York State League | Rome, NY | |
| C. Ruening | ruenin001c-- | 1899 | 5/22 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| C. Ruening | ruenin001c-- | 1899 | 6/23-6/27 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| John Ruhland | ruhlan001joh | 1899 | 5/12-8/8 | Albany Senators | New York State League | Albany, NY | |
| John Ruhland | ruhlan001joh | 1899 | 8/10-8/15 | Schenectady Electricians | New York State League | Schenectady, NY | |
| F. P. Ruin | 1899 | no g. | Lancaster Maroons | Atlantic League | Lancaster, PA | ||
| Lee Rundell | rundel001g-- | 1899 | 5/30-5/31 | Austin Senators | Texas Association | Austin, TX | |
| Rundle | rundle002--- | 1899 | Wallingford | Independent | Wallingford, CT | ||
| Rundle | rundle002--- | 1899 | 7/19 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Amos Rusie | rusie-001amo | 1899-00 | , | ||||
| Cy Russell | russel002fra | 1899 | 11 g. | Oakland Oaks | California League | Oakland, CA | |
| John Russell | russel008joh | 1899 | 5/17-5/20+ | New Haven Blues | Connecticut State League | New Haven, CT | |
| Paul Russell | russel002pau | 1899 | 5/15-7/12 | Manchester Manchesters | New England League | Manchester, NH | |
| Paul Russell | russel002pau | 1899 | 7/15-8/3 | Taunton Herrings | New England League | Taunton, MA | |
| R. Rust | rust--001r-- | 1899 | 5/10 | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Cyclone Ryan | ryan--001cyc | 1899 | 5/27-7/30 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Cyclone Ryan | ryan--001cyc | 1899 | 7/31-8/1 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Denny Ryan | ryan--001den | 1899 | 5/17-9/16 | New London Whalers | Connecticut State League | New London, CT | |
| Jack Ryan | ryan--004joh | 1899 | 5/12-9/11 | Detroit Tigers | Western League | Detroit, MI | |
| Jack Ryan | ryan--004joh | 1899 | 2 g. | Baltimore | National League | Baltimore, MD | |
| Jimmy Ryan | ryan--003jam | 1899 | 125 g. | Chicago | National League | Chicago, IL | |
| Paddy Ryan | ryan--001pat | 1899 | Helena | Independent | Helena, MT | ||
| F. Sackett | sacket001f-- | 1899 | 15 g. | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Harry Sage | sage--001har | 1899 | 4 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Denny Salmon | salmon001den | 1899 | 5/1-5/13 | Dayton Veterans | Interstate League | Dayton, OH | |
| Denny Salmon | salmon001den | 1899 | 6/25-7/2 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Guy Sample | sample001guy | 1899 | 15 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Guy Sample | sample001guy | 1899 | -9/17 | 15 g. | Fort Wayne Indians | Interstate League | Fort Wayne, IN |
| Sampson | 1899 | Cuban Giants | Independent | Cuban, | |||
| Walter Sanborn | sanbor001wal | 1899 | 5/13 | Taunton Herrings | New England League | Taunton, MA | |
| John Sanders | sander001sho | 1899 | 37 g. | Chatham Reds | Canadian League | Chatham, ON | |
| War Sanders | sander001war | 1899 | 5/17-6/4 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Jordan Sanford | 1899 | +6/13+ | Crawfordsville GA | Independent | Crawfordsville, GA | ||
| T. Ryland Sanford | 1899-01 | Richmond College | College | , | |||
| William Sanford | sanfor000wil | 1899 | +6/13+ | Crawfordsville GA | Independent | Crawfordsville, GA | |
| Chuck Santary | 1899 | Chanute KS | Chanute, KS | ||||
| Andy Santleben | santla001--- | 1899 | 4/17-5/15 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| W. Saunders | saunde001w-- | 1899 | 13 g. | Woodstock Bains | Canadian League | Woodstock, ON | |
| James Sayer | sayer-001jam | 1899 | 5/12-9/9 | Oswego Grays | New York State League | Oswego, NY | |
| Doc Scanlan | scanla001wil | 1899-01 | Fordham Col. | College | , | ||
| Jack Scannell | scanne001joh | 1899 | Colby College | College | , | ||
| Jack Scannell | scanne001joh | 1899 | 5/17-9/16 | Derby Lushers | Connecticut State League | Derby, CT | |
| Germany Schaefer | schaef001her | 1899 | ChicCity | , | |||
| Walter Schaezler | schaez001wal | 1899 | 4/17-7/5 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Schaffer | schaff007--- | 1899 | 2 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Gus Scharringhausen | sherin001j-- | 1899 | 5/4-5/7 | Austin Senators | Texas Association | Austin, TX | |
| Schaub | 1899 | Lafayette | Il-Ia | Lafayette, IN | |||
| Bob Schaub | schaub001rob | 1899 | 4/27-8/6 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Bob Schaub | schaub001rob | 1899 | 8/11-8/27 | Kansas City Blues | Western League | Kansas City, MO | |
| Bob Schaub | schaub001rob | 1899 | 8/29-9/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Ted Scheffler | scheff001ted | 1899 | 4/27-8/6 | Newark Colts | Atlantic League | Newark, NJ | |
| Ted Scheffler | scheff001ted | 1899 | 8/21-9/16 | Derby Lushers | Connecticut State League | Derby, CT | |
| Frank Scheibeck | scheib001fra | 1899 | 4/29-9/9 | Montreal Royals | Eastern League | Montreal, QC | |
| Frank Scheibeck | scheib001fra | 1899 | 27 g. | Washington | National League | Washington, DC | |
| Claude Schmeer | schmee001cla | 1899 | 95 g. | Oakland Oaks | California League | Oakland, CA | |
| H.T. Schmidt | schmid000ht- | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| Henry Schmidt | schmid004hen | 1899 | 4/29-8/4 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Henry Schmidt | schmid004hen | 1899 | 8/20-9/7 | Kansas City Blues | Western League | Kansas City, MO | |
| Crazy Schmit | schmit001fre | 1899 | 25 g. | Cleveland | National League | Cleveland, OH | |
| Joe Schrall | schral001jos | 1899 | 76 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON | |
| Joe Schrall | schral001jos | 1899 | 8/14-9/1 | Detroit Tigers | Western League | Detroit, MI | |
| Ossee Schrecongost | schrec001oss | 1899 | 72 g. | St. Louis | National League | St. Louis, MO | |
| Ossee Schrecongost | schrec001oss | 1899 | 43 g. | Cleveland | National League | Cleveland, OH | |
| Pop Schriver | schriv001wil | 1899 | 92 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Charles Schwartz | schwar001cha | 1899 | 5/6-5/26 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Charles Schwartz | schwar001cha | 1899 | 50 g. | London Cockneys | Canadian League | London, ON | |
| Ed Scott | scott-001edw | 1899 | 4/27-9/8 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Joseph Scott | scott-004jos | 1899 | Kankakee IL | Independent | Kankakee, IL | ||
| Joseph Scully | scully001jos | 1899 | Omah.-Originals | Independent | Omaha, NE | ||
| Frank Sealts | 1899 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |||
| Frank Sealts | 1899 | +5/18+ | Wapakoneta OH | Independent | Wapakoneta, OH | ||
| Clinton Seavers | seaver002cli | 1899 | Norristown | Independent | Norristown, PA | ||
| Charles Sechrist | sechri001cha | 1899 | 76 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Doc Sechrist | sechri001doc | 1899 | 4/28 | 1 g. | New York | National League | New York, NY |
| Doc Sechrist | sechri001doc | 1899 | 5/18-7/15 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Doc Sechrist | sechri001doc | 1899 | 7/19-7/27 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Doc Sechrist | sechri001doc | 1899 | 7/29-9/10 | Hartford Indians | Eastern League | Hartford, CT | |
| Otis Sedgwick | sedgwi001oti | 1899-00 | 10/2- | Battery M, 2nd Artillery | , | ||
| William Seeds | seeds-001w-- | 1899 | Norristown | Independent | Norristown, PA | ||
| Davy Seisler | seisle001dav | 1899 | 19 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Kip Selbach | selbac001alb | 1899 | 141 g. | Cincinnati | National League | Cincinnati, OH | |
| William Selden | seldon001wil | 1899 | Cuban X Giants | Independent | Cuban, | ||
| Frank Selee | selee-001fra | 1899 | Boston | National League | Boston, MA | ||
| Charles Selna | selna-001cha | 1899 | 49 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Bert Senter | senter001--- | 1899-02 | Friends Univ. | College | , | ||
| Solly Sepulveda | 1899 | 19 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| William Setley | setley001wil | 1899 | 5/10-5/14 | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| William Setley | setley001wil | 1899 | 5/25 | Oswego Grays | New York State League | Oswego, NY | |
| William Setley | setley001wil | 1899 | St. Johnsville? | ENY | St. Johnsville, | ||
| William Setley | setley001wil | 1899 | Great Falls? | MontSt | Great Falls, MT | ||
| William Setley | setley001wil | 1899 | +9/4+ | Moravia NY | Independent | Moravia, NY | |
| Settles | settle002--- | 1899 | 4 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Settles | settle002--- | 1899 | 12 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Socks Seybold | seybol001ral | 1899 | 4/27-8/5 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Socks Seybold | seybol001ral | 1899 | 8/20- | 22 g. | Cincinnati | National League | Cincinnati, OH |
| Cy Seymour | seymou001jam | 1899 | 50 g. | New York | National League | New York, NY | |
| Cy Seymour | seymou001jam | 1899 | 6/18-6/24 | Chicago | National League | Chicago, IL | |
| Shaefer | shaefe001--- | 1899 | 3 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Charlie Shaffer | shaffe001cha | 1899 | 35 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Charlie Shaffer | shaffe001cha | 1899 | 6/23- | 51 g. | Youngstown Little Giants | Interstate League | Youngstown, OH |
| Tim Shanahan | shanah001tim | 1899 | 81 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Luther Shanks | shanks001lut | 1899 | Gainesville MO | Independent | Gainsville, MO | ||
| Dan Shannon | shanno004dan | 1899 | 4/27-? | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Dan Shannon | shanno004dan | 1899 | 6/-9/11 | Buffalo Bisons | Western League | Buffalo, NY | |
| Frank Shannon | shanno002fra | 1899 | 4/29-9/9 | Springfield Ponies | Eastern League | Springfield, MA | |
| Spike Shannon | shanno003wil | 1899 | Grove City Col. | College | , | ||
| Spike Shannon | shanno003wil | 1899 | 4/27-8/5 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Spike Shannon | shanno003wil | 1899 | 8/8-9/9 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Jack Sharrott | sharro001jac | 1899 | 4/27-5/5 | Detroit Tigers | Western League | Detroit, MI | |
| Jack Sharrott | sharro001jac | 1899 | 5/9-6/3 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Jack Sharrott | sharro001jac | 1899 | 6/20-9/9 | Worcester Farmers | Eastern League | Worcester, MA | |
| Bill Sharsig | sharsi001bil | 1899 | 4/27-8/6 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Al Shaw | shaw--001alf | 1899 | 5/10-9/6 | Detroit Tigers | Western League | Detroit, MI | |
| Danny Shay | shay--001dan | 1899 | 5/10-8/7 | Brockton Shoemakers | New England League | Brockton, MA | |
| Danny Shay | shay--001dan | 1899 | 8/9-8/17 | Albany Senators | New York State League | Albany, NY | |
| Danny Shay | shay--001dan | 1899 | 8/18-9/4 | Newport Colts | New England League | Newport, RI | |
| Danny Shay | shay--001dan | 1899 | 9/5 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Shea | shea--018--- | 1899 | 7/17-7/21 | Manchester Manchesters | New England League | Manchester, NH | |
| Danny Shea | shea--001dan | 1899 | Visalia | SJValley | Visalia, CA | ||
| Danny Shea | shea--001dan | 1899 | 3 g. | Oakland Oaks | California League | Oakland, CA | |
| Frank Shea | shea--002fra | 1899 | 5/10-5/17 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| Joseph Shea | shea--001jos | 1899 | 20 g. | Oakland Oaks | California League | Oakland, CA | |
| Joseph Shea | shea--001jos | 1899 | 1 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Nap Shea | shea--001joh | 1899 | 5/12-9/8 | Rome Romans | New York State League | Rome, NY | |
| John Shearon | shearo002joh | 1899 | 4/29-8/5 | Montreal Royals | Eastern League | Montreal, QC | |
| John Shearon | shearo002joh | 1899 | 9/1-9/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Jimmy Sheckard | shecka001sam | 1899 | 147 g. | Baltimore | National League | Baltimore, MD | |
| Sheehan | sheeha002--- | 1899 | 8/3 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Dan Sheehan | sheeha001dan | 1899 | 33 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Don Sheehan | sheeha001don | 1899 | +5/20-7/7 | Derby Lushers | Connecticut State League | Derby, CT | |
| Timothy Sheehan | sheeha001bif | 1899 | 5/17-5/20 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Timothy Sheehan | sheeha001bif | 1899 | 6/22-7/11 | Hartford Indians | Eastern League | Hartford, CT | |
| Tommy Sheehan | sheeha003tho | 1899 | 81 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Bert Sheere | sheere001ber | 1899 | London Cockneys | Canadian League | London, ON | ||
| Robert Sheets | sheets001rob | 1899 | no g. | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Robert Sheets | sheets001rob | 1899 | Meriden Silverites | Connecticut State League | Meriden, CT | ||
| George Shelafo | shelaf001--- | 1899 | +8/27+ | Flandreau | Independent | Flandreau, SD | |
| Ben Shelton | shelto001ben | 1899 | 4/28-6/3 | Houston Buffaloes | Texas Association | Houston, TX | |
| Ben Shelton | shelto001ben | 1899 | 6/4-7/5 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Jack Sheridan | sherid001jac | 1899 | 4/27-9/9 | Umpire | West | , | |
| J.J. Sherrill | sherri001j-- | 1899 | -5/31 | 11 g. | New Orleans Pelicans | Southern League | New Orleans, LA |
| J.J. Sherrill | sherri001j-- | 1899 | 6/13-6/17 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Bill Shettsline | shetts001bil | 1899 | Philadelphia | National League | Philadelphia, PA | ||
| Charlie Shields | shield002cha | 1899 | Memphis Chickasaw | Independent | Memphis, TN | ||
| Herman Shincel | shince001her | 1899 | West Chester PA | Independent | West Chester, PA | ||
| Billy Shindle | shindl001wil | 1899 | 4/28-9/10 | Hartford Indians | Eastern League | Hartford, CT | |
| Tim Shinnick | shinni002tim | 1899 | 5/12-7/30 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Tim Shinnick | shinni002tim | 1899 | 8/1-8/23 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Fred Shires | shires001fre | 1899 | 5/10-9/4 | Newport Colts | New England League | Newport, RI | |
| George Shoch | shoch-001geo | 1899 | 4/28-8/27 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Charles Sholta | sholta001cha | 1899 | Webster MA | Independent | Webster, MA | ||
| Charles Sholta | sholta001cha | 1899 | 7/24 | Worcester Farmers | Eastern League | Worcester, MA | |
| Charles Sholta | sholta001cha | 1899 | 7/27-8/1 | Portland Phenoms | New England League | Portland, ME | |
| Ed Shortell | shorte001edw | 1899 | 5/28-6/10 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Frank Shugart | shugar001fra | 1899 | 4/28-9/10 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Jerry Shugrue | shugru001jer | 1899 | 5/17-9/7 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Johnny Siegle | siegle001joh | 1899 | 5/14-6/27 | Dayton Veterans | Interstate League | Dayton, OH | |
| Johnny Siegle | siegle001joh | 1899 | 8/12-9/17 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Ed Siever | siever001edw | 1899 | 26 g. | London Cockneys | Canadian League | London, ON | |
| Hank Simon | simon-001hen | 1899 | 5/12-9/9 | Utica Pentups | New York State League | Utica, NY | |
| Jack Simons | simons001joh | 1899 | 6 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Tom Skelley | skelle001--- | 1899 | +6/12-6/15+ | Norwich Witches | Connecticut State League | Norwich, CT | |
| John Skopec | skopec001joh | 1899 | Chic.-amat | ChicCity | Chicago, IL | ||
| John Skopec | skopec001joh | 1899 | Joliet IL? | Independent | Joliet, IL | ||
| Jimmy Slagle | slagle001jam | 1899 | 4/17- | 147 g. | Washington | National League | Washington, DC |
| Walt Slagle | slagle001wal | 1899 | 5/14-7/24 | Oswego Grays | New York State League | Oswego, NY | |
| Ed Slater | slater001hen | 1899 | 4/27-9/11 | Detroit Tigers | Western League | Detroit, MI | |
| Jack Slattery | slatte001joh | 1899 | Fordham Col. | College | , | ||
| Smiley | smiley003--- | 1899 | 23 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Bill Smink | smink-001wil | 1899 | 4/29-9/9 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Smith | smith-164--- | 1899 | 5/17-5/23 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Smith | smith-164--- | 1899 | 6/2-6/10 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Aleck Smith | smith-001ale | 1899 | 17 g. | Brooklyn | National League | Brooklyn, NY | |
| Aleck Smith | smith-001ale | 1899 | 41 g. | Baltimore | National League | Baltimore, MD | |
| Big Bill Smith | smith-000big | 1899 | +6/4+ | Cuban Giants | Independent | Cuban, | |
| Billy Smith | smith-011wil | 1899 | Knoxville TN | Independent | Knoxville, TN | ||
| Billy Smith | smith-057wil | 1899 | 4/30-9/17 | Toledo Mud Hens | Interstate League | Toledo, OH | |
| C. Smith | smith-010c-- | 1899 | 8/19-9/10 | Hartford Indians | Eastern League | Hartford, CT | |
| Charles Smith | smith-032cha | 1899 | 5/5-6/21 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Charles Smith | smith-032cha | 1899 | 6/26-8/11 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Clarence Smith | smith-003cha | 1899 | 5/5-9/17 | New Castle Quakers | Interstate League | New Castle, PA | |
| Dick Smith | smith-022ric | 1899 | 5/-9/19 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Eddie Smith | smith-003edd | 1899 | 2 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Eddie Smith | smith-003edd | 1899 | 6 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Elmer Smith | smith-004elm | 1899 | 88 g. | Cincinnati | National League | Cincinnati, OH | |
| Elmer Smith | smith-010elm | 1899 | 5/1-6/10 | Dayton Veterans | Interstate League | Dayton, OH | |
| Elmer Smith | smith-010elm | 1899 | 37 g. | New Castle Quakers | Interstate League | New Castle, PA | |
| Elmer Smith | smith-010elm | 1899 | Titusville PA | Independent | Titusville, PA | ||
| George Smith | smith-012geo | 1899 | 4/29-9/9 | Rochester Bronchos | Eastern League | Rochester, NY | |
| George Smith | smith-012geo | 1899 | 15 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Germany Smith | smith-013geo | 1899 | 4/28-9/11 | Minneapolis Millers | Western League | Minneapolis, MN | |
| H. Smith | smith-005h-- | 1899 | 7/19-7/24 | Taunton Herrings | New England League | Taunton, MA | |
| Harry Smith | smith-018har | 1899 | 4/28-6/30 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Hugh Smith | smith-004hug | 1899 | Umpire | Calif | , | ||
| James Smith | smith-048jam | 1899 | +6/6-6/10+ | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Joe Smith | smith-007jos | 1899 | Pottsville PA | Independent | Pottsville, PA | ||
| Joe Smith | smith-007jos | 1899 | Pottsville PA | Independent | Pottsville, PA | ||
| Jud Smith | smith-001jud | 1899 | 4/28-9/10 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Melville Smith | smith-001mel | 1899 | Purdue College | College | , | ||
| Melville Smith | smith-001mel | 1899 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | ||
| Ollie Smith | smith-002oll | 1899 | 5/8-8/5 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Phenomenal Smith | smith-013joh | 1899 | 5/10-9/4 | Portland Phenoms | New England League | Portland, ME | |
| Philly Smith | smith-006phi | 1899 | 5/22 | Derby Lushers | Connecticut State League | Derby, CT | |
| Philly Smith | smith-006phi | 1899 | 8/16-9/16 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Pop Smith | smith-001pop | 1899 | 5/24-5/31 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| Pop Smith | smith-001pop | 1899 | 8/7-9/9 | Umpire | NYSt | , | |
| Stub Smith | smith-001stu | 1899 | 4/29-5/31 | Worcester Farmers | Eastern League | Worcester, MA | |
| Stub Smith | smith-001stu | 1899 | 6/14-9/2 | Portland Phenoms | New England League | Portland, ME | |
| Tom Smith | smith-006tom | 1899 | 5/10-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Tom Smith | smith-006tom | 1899 | 5/30-6/1 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Tom Smith | smith-006tom | 1899 | 6/16 | Newport Colts | New England League | Newport, RI | |
| Tom Smith | smith-006tom | 1899 | 6/22-7/11 | Taunton Herrings | New England League | Taunton, MA | |
| Tom Smith | smith-006tom | 1899 | 7/17-7/26 | Manchester Manchesters | New England League | Manchester, NH | |
| W.H. Smith | smith-009w-- | 1899 | Exeter College | College | , | ||
| W.H. Smith | smith-009w-- | 1899 | 5/12-6/2 | Pawtucket Colts | New England League | Pawtucket, RI | |
| W.H. Smith | smith-006phi | 1899 | no g. | New Haven Blues | Connecticut State League | New Haven, CT | |
| William Smith | 1899 | -9/18 | 91 g. | MLB Umpire | National League | , | |
| William Smith | 1899 | Umpire | West | , | |||
| Homer Smoot | smoot-001hom | 1899 | 60 g. | Atlantic City | Independent | Atlantic City, NJ | |
| Benjamin Snyder | snyder003ben | 1899 | 34 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Cooney Snyder | snyder001coo | 1899 | 4/27-8/5 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Leslie Snyder | snyder001les | 1899 | 51 g. | Chatham Reds | Canadian League | Chatham, ON | |
| Leslie Snyder | snyder001les | 1899 | Hamilton Blackbirds | Canadian League | Hamilton, ON | ||
| Scott Snyder | snyder001sco | 1899 | Perry IA | Independent | Perry, IA | ||
| Louis Sockalexis | sockal001chi | 1899 | -5/13 | 7 g. | Cleveland | National League | Cleveland, OH |
| Louis Sockalexis | sockal001chi | 1899 | 5/22-6/17 | Hartford Indians | Eastern League | Hartford, CT | |
| Louis Sockalexis | sockal001chi | 1899 | 6/26-7/5+ | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Louis Sockalexis | sockal001chi | 1899 | 7/17-9/16 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| Sommers | sommer003--- | 1899 | 5/30-6/1 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Harry Sonier | sonier001hen | 1899 | 6 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Sox Sorber | sorber001wal | 1899 | 5/12-7/19 | Albany Senators | New York State League | Albany, NY | |
| Sox Sorber | sorber001wal | 1899 | 8/11-9/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Holly Souders | souder001har | 1899 | 5/1-9/10 | Montreal Royals | Eastern League | Montreal, QC | |
| George Spalding | spaldi001g-- | 1899 | 5/10-5/23 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Bill Sparger | sparge001wil | 1899 | 4/16-7/4 | Galveston Sand Crabs | Texas Association | Galveston, TX | |
| Tully Sparks | sparks001tho | 1899 | 28 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Frank Spates | spates001fra | 1899 | +10/13+ | Frostburg MD | Independent | Frostburg, MD | |
| Speck | speck-001--- | 1899 | 1 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| George Speer | speer-001geo | 1899 | 4/28-9/11 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Dit Spencer | spence001d-- | 1899 | 40 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Dit Spencer | spence001d-- | 1899 | 6/14-6/22 | Austin Senators | Texas Association | Austin, TX | |
| Wirt Spencer | spence001wir | 1899 | 20 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Peter Sperlein | sperle001pet | 1899 | +5/2+ | Johnstown | Independent | Johnstown, PA | |
| Peter Sperlein | sperle001pet | 1899 | +8/1+ | Indiana-Magentas | Independent | Indiana, IN | |
| Spevins | spevin001--- | 1899 | 1 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Sphere | sphere001--- | 1899 | 6/2 | Portland Phenoms | New England League | Portland, ME | |
| Harry Spies | spies-001hen | 1899 | 4/28-9/10 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Frank Spranger | sprang001fra | 1899 | 21 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Frank Spranger | sprang001fra | 1899 | Stratford Poets | Canadian League | Stratford, ON | ||
| Jack Spratt | spratt001wil | 1899 | 5/10-9/2 | Portland Phenoms | New England League | Portland, ME | |
| Sprecker | 1899 | 12 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| Patterson Spriggs | sprigg000pat | 1899 | San Diego Fullers | Southern California League | San Diego, CA | ||
| Oliver Sprogell | sproge001oli | 1899 | 4/28-5/3 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Oliver Sprogell | sproge001oli | 1899 | 6/3-6/22 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Jim St. Vrain | stvrai001jam | 1899 | Butte | semi-pro | Butte, MT | ||
| John Stackhouse | stackh001joh | 1899 | 6/20-7/12 | Newport Colts | New England League | Newport, RI | |
| John Stackhouse | stackh001joh | 1899 | 7/14-7/15 | Portland Phenoms | New England League | Portland, ME | |
| Cy Stackpole | stackp001art | 1899 | St. Johnsbury | Independent | St. Johnsbury, | ||
| Cy Stackpole | stackp001art | 1899 | 7/7-7/11 | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| James Stafford | staffo001gen | 1899 | 55 g. | Boston | National League | Boston, MA | |
| James Stafford | staffo001gen | 1899 | 31 g. | Washington | National League | Washington, DC | |
| John Stafford | staffo001joh | 1899 | Webster MA | Independent | Webster, MA | ||
| Robert Stafford | staffo003rob | 1899 | 4/28-9/11 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Amos Stagg | 1899 | Univ. of Chicago | College | , | |||
| Chick Stahl | stahl-001cha | 1899 | 148 g. | Boston | National League | Boston, MA | |
| Jake Stahl | stahl-001gar | 1899-03 | U. of Illinois | College | , | ||
| Harry Staley | staley001har | 1899 | 5/16-5/23 | Schenectady Electricians | New York State League | Schenectady, NY | |
| George Stallings | stalli002geo | 1899 | 4/27-9/11 | Detroit Tigers | Western League | Detroit, MI | |
| Adam Stanhope | stanho001ada | 1899 | 5/23-5/25 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Adam Stanhope | stanho001ada | 1899 | 7/31-9/4 | Derby Lushers | Connecticut State League | Derby, CT | |
| Adam Stanhope | stanho001ada | 1899 | 9/4-9/6 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Stanley | stanle002--- | 1899 | 5/6 | Hartford Indians | Eastern League | Hartford, CT | |
| Matt Stanley | stanle001mat | 1899 | 79 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Tom Stanton | stanto002tho | 1899 | 4 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| William Staples | staple001wil | 1899 | 4/18-6/3 | Houston Buffaloes | Texas Association | Houston, TX | |
| William Staples | staple001wil | 1899 | 6/6-7/2 | Austin Senators | Texas Association | Austin, TX | |
| William Stark | stark-003wil | 1899 | Buffalo Nonparells | BuffCity | Buffalo, NY | ||
| Starkey | starke002--- | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| George Starnagle | starna001geo | 1899 | 5/10- | Danville | Indiana-Illinois League | Danville, IN | |
| George Starnagle | starna001geo | 1899 | +8/3+ | Sioux Falls | MontSt | Sioux Falls, SD | |
| Dan Stearns | stearn002dan | 1899 | 9/6-9/9 | Buffalo Bisons | Western League | Buffalo, NY | |
| Farmer Steelman | steelm001mor | 1899 | 4/27-8/5 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Farmer Steelman | steelm001mor | 1899 | 8/8-9/9 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Farmer Steelman | steelm001mor | 1899 | 9/15- | 4 g. | Louisville | National League | Louisville, KY |
| Michael Steffani | steffa001mic | 1899 | 2 g. | San Jose Brewers | California League | San Jose, CA | |
| Michael Steffani | steffa001mic | 1899 | +9/17+ | 27 g. | Oakland Oaks | California League | Oakland, CA |
| Stein | 1899 | 1 g. | San Diego Fullers | Southern California League | San Diego, CA | ||
| Harry Steinfeldt | steinf001har | 1899 | 108 g. | Cincinnati | National League | Cincinnati, OH | |
| Steinmetz | steinm003--- | 1899 | 6/2-6/3+ | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| William Steinwender | steinw001--- | 1899-01 | Princeton Univ. | College | , | ||
| Jake Stenzel | stenze001jak | 1899 | 35 g. | St. Louis | National League | St. Louis, MO | |
| Jake Stenzel | stenze001jak | 1899 | 9 g. | Cincinnati | National League | Cincinnati, OH | |
| Stephens | stephe001--- | 1899 | 5/20-5/22 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| L.A.W. Stephens | stephe002l-- | 1899 | 4/16-6/3 | Houston Buffaloes | Texas Association | Houston, TX | |
| Stewart | stewar042--- | 1899 | 3 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Ace Stewart | stewar001ace | 1899 | 4/27-9/9 | Indianapolis Hoosiers | Western League | Indianapolis, IN | |
| Joe Stewart | stewar003jos | 1899 | Erskin College | College | , | ||
| Joe Stidham | stidha000joe | 1899 | +3/31+ | Fredericksburg Col. | College | , | |
| Archie Stimmel | stimme001arc | 1899 | 4/27-8/3 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Jack Stivetts | stivet001jac | 1899 | -6/12 | 18 g. | Cleveland | National League | Cleveland, OH |
| Stokes | stokes005--- | 1899 | 5/15-6/5 | Auburn Maroons/Troy Trojans | New York State League | Auburn, NY | |
| Harry Stoney | stoney001har | 1899 | Denv.-Gulf | Independent | Denver, CO | ||
| George Stotsburg | 1899 | Newark OH | Newark, OH | ||||
| Tom Stouch | stouch001tom | 1899 | 4/29-6/7 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Tom Stouch | stouch001tom | 1899 | 6/10 | Taunton Herrings | New England League | Taunton, MA | |
| Tom Stouch | stouch001tom | 1899 | 6/17-6/30 | Scranton Miners | Atlantic League | Scranton, PA | |
| Tom Stouch | stouch001tom | 1899 | Atlantic City | Independent | Atlantic City, NJ | ||
| Sammy Strang | strang001sam | 1899 | 36 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Sammy Strang | strang001sam | 1899 | 6/30-9/20 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Strangman | 1899 | 1 g. | San Bernardino | Southern California League | San Bernardino, CA | ||
| Frank Strarup | straru000fra | 1899 | +4/16+ | KC-Schmelzers | Independent | Kansas City, MO | |
| Scott Stratton | stratt001sco | 1899 | 4/27-8/5 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Scott Stratton | stratt001sco | 1899 | +8/10-9/16 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Streaker | streak001--- | 1899 | 5/5-5/22 | Dayton Veterans | Interstate League | Dayton, OH | |
| Julie Streib | streib001jul | 1899 | 68 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Oscar Streit | streit001osc | 1899 | 4/21- | 2 g. | Boston | National League | Boston, MA |
| Oscar Streit | streit001osc | 1899 | 5/22-9/20 | New Castle Quakers | Interstate League | New Castle, PA | |
| Elmer Stricklett | strick001elm | 1899 | 19 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Elmer Stricklett | strick001elm | 1899 | 6/21-9/8 | Kansas City Blues | Western League | Kansas City, MO | |
| Charles Strobel | strobe001cha | 1899 | 4/30-9/20 | Toledo Mud Hens | Interstate League | Toledo, OH | |
| Stroh | stroh-001--- | 1899 | 5/10-5/22 | Newport Colts | New England League | Newport, RI | |
| Billy Stroh | stroh-001wil | 1899 | 5/5-8/6 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Billy Stroh | stroh-001wil | 1899 | 9/2-9/9 | Rome Romans | New York State League | Rome, NY | |
| George Stroh | stroh-001geo | 1899 | 7/8-7/20 | Syracuse Stars | Eastern League | Syracuse, NY | |
| George Stroh | stroh-001geo | 1899 | 7/25-7/27 | Oswego Grays | New York State League | Oswego, NY | |
| George Stroh | stroh-001geo | 1899 | Ilion | Independent | Ilion, NY | ||
| Ed Struve | 1899 | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |||
| Bill Stuart | stuart001bil | 1899 | 4/29-5/20 | Springfield Ponies | Eastern League | Springfield, MA | |
| Bill Stuart | stuart001bil | 1899 | 5/29-8/17 | Hartford Indians | Eastern League | Hartford, CT | |
| Bill Stuart | stuart001bil | 1899 | 8/19-8/23 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Bill Stuart | stuart001bil | 1899 | Umpire | CtSt | , | ||
| Bill Stuart | stuart001bil | 1899 | 9/7 | 1 g. | New York | National League | New York, NY |
| George Stultz | stultz002geo | 1899 | 5 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| George Stultz | stultz002geo | 1899 | 7/16-7/21 | Newark Colts | Atlantic League | Newark, NJ | |
| Henry Stultz | stultz001hen | 1899 | 77 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Soldier Stultz | 1899 | 4 g. | San Diego Fullers | Southern California League | San Diego, CA | ||
| J.F. Stumpf | stumpf001j-- | 1899 | 2 g. | Stratford Poets | Canadian League | Stratford, ON | |
| Ed Stutsman | stutsm001e-- | 1899 | +7/29-9/10+ | Michigan City | Independent | Michigan City, MI | |
| Willie Sudhoff | sudhof001joh | 1899 | 11 g. | Cleveland | National League | Cleveland, OH | |
| Willie Sudhoff | sudhof001joh | 1899 | 25 g. | St. Louis | National League | St. Louis, MO | |
| Joe Sugden | sugden001jos | 1899 | 76 g. | Cleveland | National League | Cleveland, OH | |
| Billy Sullivan | sulliv006wil | 1899 | 4/27-7/17 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Billy Sullivan | sulliv006wil | 1899 | 7/18-9/9 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Billy Sullivan | sulliv006wil | 1899 | 9/13- | 22 g. | Boston | National League | Boston, MA |
| Daniel Sullivan | sulliv008dan | 1899 | 10 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Jack Sullivan | sulliv023joh | 1899 | 7/29-9/14 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Jim Sullivan | sulliv006jam | 1899 | 87 g. | San Francisco A's | California League | San Francisco, CA | |
| Jim Sullivan | sulliv001jim | 1899 | 5/26-6/1 | Manchester Manchesters | New England League | Manchester, NH | |
| Jim Sullivan | sulliv001jim | 1899 | 6/24 | Manchester Manchesters | New England League | Manchester, NH | |
| Mart Sullivan | sulliv004mar | 1899 | Butte | Independent | Butte, MT | ||
| Mike Sullivan | sulliv002mik | 1899 | 8/18 | 1 g. | Boston | National League | Boston, MA |
| Mike Sullivan | sulliv005mic | 1899 | 5/10-9/2 | Portland Phenoms | New England League | Portland, ME | |
| Suter Sullivan | sulliv002sut | 1899 | 127 g. | Cleveland | National League | Cleveland, OH | |
| Ted Sullivan | sulliv001tp- | 1899 | 1 g. | Montgomery Senators/Dallas Scrappers | Southern League | Montgomery, AL | |
| Ted Sullivan | sulliv001tp- | 1899 | 5/2-5/29 | Montgomery Senators/Dallas Scrappers | Southern League | Dallas, TX | |
| Billy Sunday | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Billy Sunday | 1899 | 21 g. | San Bernardino | Southern California League | San Bernardino, CA | ||
| William Sutch | sutch-001wil | 1899 | +4/20+ | Susquehanna U. | College | , | |
| William Sutch | sutch-001wil | 1899 | +7/29+ | Charlerol PA | Independent | Charleroi, PA | |
| Jack Sutthoff | suttho001joh | 1899 | 3 g. | St. Louis | National League | St. Louis, MO | |
| Jack Sutthoff | suttho001joh | 1899 | 4/29-9/6 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Alex Swaim | swaim-001ale | 1899 | 4 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Arthur Swaim | swaim-001art | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| Cy Swaim | swaim-001cy- | 1899 | 4/29-5/20 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Cy Swaim | swaim-001cy- | 1899 | 5/23-9/16 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Harry Swalm | swalm-001har | 1899 | 5/31- | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Fred Swanton | swanto001fre | 1899 | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | ||
| Norcum Sweeney | sweene038--- | 1899 | +6/21+ | Wilm.-Atl. Coast | Independent | , | |
| Mart Swift | swift-002mar | 1899 | 4/27-7/4 | Scranton Miners | Atlantic League | Scranton, PA | |
| Charlie Swindells | swinde001cha | 1899 | 60 g. | San Francisco A's | California League | San Francisco, CA | |
| Arthur Switzer | switze001art | 1899 | 15 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Arthur Switzer | switze001art | 1899 | 6/11-7/6 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Arthur Switzer | switze001art | 1899 | 7/13-8/17 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Arthur Switzer | switze001art | 1899 | 8/21-9/8 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Bill Sykes | sykes-001bil | 1899 | Oakland Oaks | California League | Oakland, CA | ||
| Bob Talbot | talbot001rob | 1899 | 5/5-5/12 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Bob Talbot | talbot001rob | 1899 | 5/19-9/7 | Albany Senators | New York State League | Albany, NY | |
| James Tamsett | tamset001jam | 1899 | 5/12-9/9 | Rome Romans | New York State League | Rome, NY | |
| Jesse Tannehill | tanneh001jes | 1899 | 48 g. | Pittsburgh | National League | Pittsburgh, PA | |
| Tate | tate--008--- | 1899 | 5/2-5/3 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Harry Tate | tate--001har | 1899 | 4/27-6/22 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Harry Tate | tate--001har | 1899 | 7/1-7/4 | Scranton Miners | Atlantic League | Scranton, PA | |
| Harry Tate | tate--001har | 1899 | 7/21-8/9 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Harry Tate | tate--001har | 1899 | +8/12-9/16 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Hughie Tate | tate--001hug | 1899-05 | U. of Pennsylvania | College | , | ||
| Taylor | taylor003--- | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Billy Taylor | taylor002bil | 1899 | 4/28-5/5 | Hartford Indians | Eastern League | Hartford, CT | |
| Billy Taylor | taylor002bil | 1899 | 5/8-5/10 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Billy Taylor | taylor002bil | 1899 | 5/15-7/26 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Billy Taylor | taylor002bil | 1899 | 91 g. | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Billy Taylor | taylor002bil | 1899 | 8/5-8/12 | Detroit Tigers | Western League | Detroit, MI | |
| Billy Taylor | taylor002bil | 1899 | 9/6-9/16 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Jack Taylor | taylor004jac | 1899 | 25 g. | Cincinnati | National League | Cincinnati, OH | |
| Jack Taylor | taylor014joh | 1899 | 4/16- | 42 g. | Chicago | National League | Chicago, IL |
| Luther Taylor | taylor001lut | 1899 | 17 g. | Shreveport Tigers | Southern League | Shreveport, LA | |
| Luther Taylor | taylor001lut | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Mattoon, IL | ||
| Wally Taylor | taylor001wal | 1899 | 8/16-9/10 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| George Tebeau | tebeau002geo | 1899 | 4/27-7/17 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| George Tebeau | tebeau002geo | 1899 | 7/18-9/10 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Patsy Tebeau | tebeau001pat | 1899 | 77 g. | St. Louis | National League | St. Louis, MO | |
| Fred Tenney | tenney001fre | 1899 | 150 g. | Boston | National League | Boston, MA | |
| Parry Thackara | thacka001dav | 1899 | 4/27-5/31 | Scranton Miners | Atlantic League | Scranton, PA | |
| Grant Thatcher | thatch001uly | 1899 | 5/2-8/5 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Grant Thatcher | thatch001uly | 1899 | 8/18-9/16 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Warren Thatcher | thatch001w-- | 1899 | 5/30 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Joseph Theisen | theise001jos | 1899 | 5/17-9/16 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Otto Thiel | thiel-001ott | 1899 | 37 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| William Thieley | 1899 | no g. | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | ||
| William Thieley | 1899 | +7/15-8/ | Umpire | CtSt | , | ||
| Henry Thielman | thielm001hen | 1899 | Manhattan Col | College | , | ||
| Jake Thielman | thielm001joh | 1899 | 1 g. | Cedar Rapids Bunnies | Western Association | Cedar Rapids, IA | |
| Jake Thielman | thielm001joh | 1899 | Sioux Falls | Independent | Sioux Falls, SD | ||
| Thomas | thomas036--- | 1899 | 7/9-7/10 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Thomas | thomas006--- | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Anderson, IN | ||
| Bill Thomas | thomas007wil | 1899 | Ursinus Col. | College | , | ||
| Charles Thomas | thomas014cha | 1899 | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| Joe Thomas | thomas001tho | 1899 | 2 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Roy Thomas | thomas002roy | 1899 | 4/14- | 150 g. | Philadelphia | National League | Philadelphia, PA |
| Tom Thomas | thomas005tho | 1899 | 4/27-8/30 | Detroit Tigers | Western League | Detroit, MI | |
| Tom Thomas | thomas005tho | 1899 | 4 g. | St. Louis | National League | St. Louis, MO | |
| Thompson | thomps020--- | 1899 | 5/20-5/23 | Manchester Manchesters | New England League | Manchester, NH | |
| Andy Thompson | thomps006and | 1899 | 16 g. | Woodstock Bains | Canadian League | Woodstock, ON | |
| John Thornton | thornt003joh | 1899 | 4/27-6/3 | Paterson Giants | Atlantic League | Paterson, NJ | |
| John Thornton | thornt003joh | 1899 | 6/8-7/10 | Newark Colts | Atlantic League | Newark, NJ | |
| John Thornton | thornt003joh | 1899 | +8/3-9/16 | Derby Lushers | Connecticut State League | Derby, CT | |
| Walter Thornton | thornt002wal | 1899 | Seattle | PugetSound | Seattle, WA | ||
| Billy Thurman | thurma001bil | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Billy Thurman | thurma001bil | 1899 | 17 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Mun Thurman | thurma000mun | 1899 | 28 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Pat Tibald | tibald001pet | 1899 | 46 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Pat Tibald | tibald001pet | 1899 | Guelph Maple Leafs | Canadian League | Guelph, ON | ||
| Pat Tibald | tibald001pet | 1899 | 7/3-7/6 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Pat Tibald | tibald001pet | 1899 | 9/7-9/10 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Mike Tiernan | tierna001mik | 1899 | 35 g. | New York | National League | New York, NY | |
| Jack Tighe | tighe-001joh | 1899 | 5/10-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| Jack Tighe | tighe-001joh | 1899 | 5/24-5/31 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| Jack Tighe | tighe-001joh | 1899 | 6/5-7/27 | Portland Phenoms | New England League | Portland, ME | |
| Joe Tinker | tinker001jos | 1899 | ParsonsKS-Paragons | S-pro | Parsons, KS | ||
| Joe Tinker | tinker001jos | 1899 | Coffeyville KS | S-pro | Coffeyville, KS | ||
| Tipton | tipton006--- | 1899 | 28 g. | Woodstock Bains | Canadian League | Woodstock, ON | |
| Stanley Titus | titus-004--- | 1899-02 | Gonzaga Univ. | College | , | ||
| Frank Todd | todd--002fra | 1899 | 5/22-6/15 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Charley Toennis | 1899 | Meri.-West End | Independent | Meriden, CT | |||
| Jack Toft | toft--001jam | 1899 | 5/10-7/29 | Portland Phenoms | New England League | Portland, ME | |
| Jimmy Toman | toman-001jam | 1899 | 5/12-9/9 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Frank Torreyson | torrey001fra | 1899 | 4/30-7/18 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Frank Torreyson | torrey001fra | 1899 | 7/21-7/30 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Frank Torreyson | torrey001fra | 1899 | 7/31-9/20 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Thayer Torreyson | torrey001tha | 1899 | 5/1-7/8 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Thayer Torreyson | torrey001tha | 1899 | 7/20-7/29 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Thayer Torreyson | torrey001tha | 1899 | 7/31-9/17 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| W. C. Touhey | 1899 | Paterson Giants | Atlantic League | Paterson, NJ | |||
| Tower | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Harry Towne | towne-001har | 1899-03 | Bates College | College | , | ||
| Cy Townsend | townse002cha | 1899 | 5/12-7/26 | Albany Senators | New York State League | Albany, NY | |
| Cy Townsend | townse002cha | 1899 | 8/4-9/9 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Charles Traeger | traege002cha | 1899 | 15 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Charles Traeger | traege002cha | 1899 | Woodstock Bains | Canadian League | Woodstock, CA | ||
| Bert Treanor | treano001ber | 1899 | 27 g. | San Diego Fullers | Southern California League | San Diego, CA | |
| Isaac Trimble | 1899 | Montreal Royals | Eastern League | Montreal, QC | |||
| Solly Tripp | tripp-001sol | 1899 | 27 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Mike Trost | trost-001mik | 1899 | 5/1- | 35 g. | Youngstown Little Giants | Interstate League | Youngstown, OH |
| Harry Truby | truby-002har | 1899 | 5/1-9/20 | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Dan Tucker | 1899 | 11 g. | San Bernardino | Southern California League | San Bernardino, CA | ||
| Tommy Tucker | tucker003tho | 1899 | -9/13 | 127 g. | Cleveland | National League | Cleveland, OH |
| Herman Tull | tull--001h-- | 1899 | 5/15-7/16 | Rome Romans | New York State League | Rome, NY | |
| Paddy Tuohy | toohey001jam | 1899 | Paterson Giants | Atlantic League | Paterson, NJ | ||
| Turner | turner005--- | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| George Turner | turner002geo | 1899 | 21 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Jack Turner | turner004jac | 1899 | +8/11+ | Grand Forks | Independent | Grand Forks, ND | |
| Thomas Turner | turner006tho | 1899 | 6/30-8/16 | Dayton Veterans | Interstate League | Dayton, OH | |
| Thomas Turner | turner006tho | 1899 | -9/19 | 64 g. | Wheeling Stogies | Interstate League | Wheeling, WV |
| Tuck Turner | turner002tuc | 1899 | 4/28-5/30 | Kansas City Blues | Western League | Kansas City, MO | |
| Tuck Turner | turner002tuc | 1899 | 6/19-9/10 | Hartford Indians | Eastern League | Hartford, CT | |
| Twerrer | twerre000--- | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| Art Twineham | twineh002art | 1899 | 5/21- | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Art Twineham | twineh002art | 1899 | 51 g. | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Bill Tyler | 1899 | 9 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Robert Tyler | tyler-001rob | 1899 | Umpire | CtSt | , | ||
| George Ulrich | ulrich001geo | 1899 | 5/10-6/13 | Manchester Manchesters | New England League | Manchester, NH | |
| Fred Underwood | underw002fre | 1899 | 23 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Bob Unglaub | unglau002rob | 1899 | Univ. of Maryland | College | , | ||
| Tommy Uniac | uniac-001tho | 1899 | NC | , | |||
| Bill Urquhart | urquha001wil | 1899 | 4/28-9/10 | Hartford Indians | Eastern League | Hartford, CT | |
| Bill Urquhart | urquha001wil | 1899 | 9/13 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Lon Ury | ury---001lou | 1899 | Galena KS | Galena, KS | |||
| Jerome Utley | utley-001jer | 1899 | Detroit CentralHS | High School | , | ||
| Fred Valdois | valdoi001fre | 1899 | 5/1-7/18 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Fred Valdois | valdoi001fre | 1899 | 7/20-7/22 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| E. B. Van Arnam | 1899 | 25 g. | San Diego Fullers | Southern California League | San Diego, CA | ||
| Deacon Van Buren | vanbur001edw | 1899 | 5/1-7/ | Youngstown Little Giants | Interstate League | Youngstown, OH | |
| Deacon Van Buren | vanbur001edw | 1899 | -9/20 | New Castle Quakers | Interstate League | New Castle, PA | |
| Colbert Van Giesen | vangie001col | 1899 | -6/ | 4 g. | Hamilton Blackbirds | Canadian League | Hamilton, ON |
| George Van Haltren | vanhal001geo | 1899 | 152 g. | New York | National League | New York, NY | |
| Charley Van Horn | vanhor002cha | 1899 | 3 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Charley Van Horn | vanhor002cha | 1899 | 1 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Arthur Van Winkler | vanwin001art | 1899 | 6/5-6/17 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Ike Van Zandt | vanzan001cha | 1899 | New London Whalers | Connecticut State League | New London, CT | ||
| Dike Varney | varney001law | 1899 | Dartmouth Col. | College | , | ||
| Farmer Vaughn | vaughn001far | 1899 | 31 g. | Cincinnati | National League | Cincinnati, OH | |
| Farmer Vaughn | vaughn001far | 1899 | 8/2-9/10 | St. Paul Apostles/Saints | Western League | St. Paul, MN | |
| Joseph Veitch | veitch001jos | 1899 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | ||
| Joseph Veitch | veitch001jos | 1899 | 5/14-6/12 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Joseph Veitch | veitch001jos | 1899 | 6/29-7/9 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Joseph Veitch | veitch001jos | 1899 | 7/10-8/6 | Newark Colts | Atlantic League | Newark, NJ | |
| Lee Viau | viau--001lee | 1899 | 5/1-5/26 | Worcester Farmers | Eastern League | Worcester, MA | |
| Lee Viau | viau--001lee | 1899 | 6/16-7/30 | Utica Pentups | New York State League | Utica, NY | |
| Lee Viau | viau--001lee | 1899 | 8/20-9/9 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Tom Vickery | vicker001tom | 1899 | 5/6-5/30 | Rochester Bronchos | Eastern League | Rochester, NY | |
| Tom Vickery | vicker001tom | 1899 | 6/18-6/30 | Utica Pentups | New York State League | Utica, NY | |
| Tom Vickery | vicker001tom | 1899 | 8/10-9/4 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Sammy Vigneux | vignea001sam | 1899 | 4/27-8/1 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Villard | 1899 | -9/7? | West | , | |||
| George Villeman | villem001geo | 1899 | 5/1-7/4 | Syracuse Stars | Eastern League | Syracuse, NY | |
| George Villeman | villem001geo | 1899 | 7/10-9/9 | Utica Pentups | New York State League | Utica, NY | |
| Rony Viox | viox--001hen | 1899 | 4/28-6/16 | Kansas City Blues | Western League | Kansas City, MO | |
| Rony Viox | viox--001hen | 1899 | 8/3-9/11 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| James Vizard | vizard001jam | 1899 | MiSt | , | |||
| Oscar Vogeding | 1899 | +8/19+ | Woodbury NJ | Independent | Woodbury, NJ | ||
| Jim Vollendorf | vollen001ado | 1899 | 4/30-5/30 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Jim Vollendorf | vollen001ado | 1899 | 3 g. | Rockford Rough Riders | Western Association | Rockford, IL | |
| Jim Vollendorf | vollen001ado | 1899 | 6/26-8/28 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Jake Volz | volz--001jac | 1899 | 4/17-6/16 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Jake Volz | volz--001jac | 1899 | 7/3 | Austin Senators | Texas Association | Austin, TX | |
| Cy Vorhees | vorhee001hen | 1899 | 4/29-8/5 | Wilkes-Barre Coal Barons | Atlantic League | Wilkes-Barre, PA | |
| Cy Vorhees | vorhee001hen | 1899 | Atlantic City | Independent | Atlantic City, NJ | ||
| Cy Vorhees | vorhee001hen | 1899 | Mauch Chunk | Independent | Mauch Chunk, PA | ||
| Cy Vorhees | vorhee001hen | 1899 | 8/- | Waterbury Rough Riders | Connecticut State League | Waterbury, CT | |
| William Vought | vought002wil | 1899 | 5/10-9/4 | Taunton Herrings | New England League | Taunton, MA | |
| William Vought | vought002wil | 1899 | 9/6-9/16 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Rube Waddell | waddel001geo | 1899 | 4/27-7/17 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Rube Waddell | waddel001geo | 1899 | 7/20-9/7 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Rube Waddell | waddel001geo | 1899 | 10 g. | Louisville | National League | Louisville, KY | |
| Jack Wadsworth | wadswo002jac | 1899 | 5/1-9/19 | New Castle Quakers | Interstate League | New Castle, PA | |
| Wagner | 1899 | Findley | Independent | Findley, OH | |||
| Wagner | 1899 | Muncie/Crawford | Indiana-Illinois League | Crawford, IN | |||
| Wagner | 1899 | NYC-Riverside | Independent | New York, NY | |||
| Butts Wagner | wagner001but | 1899 | 4/28-9/10 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Honus Wagner | wagner004joh | 1899 | 148 g. | Louisville | National League | Louisville, KY | |
| Johnny Wagner | wagner005joh | 1899 | no g. | Syracuse Stars | Eastern League | Syracuse, NY | |
| Johnny Wagner | wagner005joh | 1899 | no g. | Rochester Bronchos | Eastern League | Rochester, NY | |
| Johnny Wagner | wagner005joh | 1899 | no g. | Hartford Indians | Eastern League | Hartford, CT | |
| Johnny Wagner | wagner005joh | 1899 | Geneva OH | Independent | Geneva, OH | ||
| Johnny Wagner | wagner005joh | 1899 | 7/- | 24 g. | Guelph Maple Leafs | Canadian League | Guelph, ON |
| Johnny Wagner | wagner005joh | 1899 | 5/18-5/20 | Hartford Indians | Eastern League | Hartford, CT | |
| M. Wagner | wagner001m-- | 1899 | 15 g. | Chatham Reds | Canadian League | Chatham, ON | |
| M. Wagner | wagner001m-- | 1899 | St. Thomas Saints | Canadian League | St. Thomas, ON | ||
| Bert Wakefield | wakefi000ber | 1899 | Chicago Unions | Independent | Chicago, IL | ||
| Irv Waldron | waldro001irv | 1899 | 4/28-9/4 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Harry Walker | 1899 | +8/11+ | Grand Forks | Independent | Grand Forks, ND | ||
| Pony Walker | walker001pon | 1899 | 10 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| George Wall | 1899 | Ogdensb-O.A.C. | Independent | Ogdensburg, NY | |||
| Joe Wall | wall--005jos | 1899 | North Adams | MaSt | North Adams, MA | ||
| Bobby Wallace | wallac002rho | 1899 | 151 g. | St. Louis | National League | St. Louis, MO | |
| Walters | walter015--- | 1899 | LouisvCity | , | |||
| Jack Walters | walter001joh | 1899 | 4/29-9/10 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Lon Walters | walter000lon | 1899 | Danville | Indiana-Illinois League | Danville, IN | ||
| Jack Ward | ward--002jac | 1899 | 1 p. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| James Ward | 1899 | Umpire | WestA | , | |||
| James Ward | 1899 | 6/28-7/7 | Umpire | West | , | ||
| L. Ward | ward--001l-- | 1899 | 7/9 | Newark Colts | Atlantic League | Newark, NJ | |
| Pierre Ward | ward--002e-- | 1899 | 5/17 | Cortland Wagonmakers | New York State League | Cortland, ON | |
| Pierre Ward | ward--002e-- | 1899 | 5/17 | Cortland Wagonmakers | New York State League | Cortland, NY | |
| Piggy Ward | ward--002fra | 1899 | 4/27-8/6 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Piggy Ward | ward--002fra | 1899 | -9/20 | 42 g. | Mansfield Haymakers | Interstate League | Mansfield, OH |
| Rube Ward | ward--003joh | 1899-01 | Holy Cross Col. | College | , | ||
| William Wardenburg | warden001wil | 1899 | 1 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Bobby Warner | warner002rob | 1899 | 37 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Bobby Warner | warner002rob | 1899 | +8/27+ | Sioux Falls | Independent | Sioux Falls, SD | |
| H.B. Warner | warner002h-- | 1899 | 49 g. | Guelph Maple Leafs | Canadian League | Guelph, ON | |
| Jack Warner | warner002joh | 1899 | 88 g. | New York | National League | New York, NY | |
| Rich Warner | 1899 | -8/2 | Emporia | Independent | Emporia, KS | ||
| Mum Warrender | warren002fra | 1899 | 29 g. | Quincy/Dubuque | Western Association | Quincy, IL | |
| Mum Warrender | warren002fra | 1899 | Quincy/Dubuque | Western Association | Dubuque, IA | ||
| Mum Warrender | warren002fra | 1899 | Terre Haute | Indiana-Illinois League | Terre Haute, IN | ||
| Libe Washburn | washbu001lib | 1899 | Brown Univ. | College | , | ||
| Watkins | watkin013--- | 1899 | Manhattan Col. | College | , | ||
| Watkins | watkin013--- | 1899 | 6/3 | Norwich Witches | Connecticut State League | Norwich, CT | |
| Bill Watkins | watkin002bil | 1899 | Pittsburgh | National League | Pittsburgh, PA | ||
| Charles Watkins | watkin002cha | 1899 | -9/17 | 47 g. | Dayton Veterans | Interstate League | Dayton, OH |
| John Watkins | 1899 | Cuban Giants | Independent | Cuban, | |||
| William Wayne | wayne-001wil | 1899 | 5/16-7/5 | Oswego Grays | New York State League | Oswego, NY | |
| William Wayne | wayne-001wil | 1899 | 7/12-7/15 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Dick Weand | weand-001geo | 1899 | Norristown | Independent | Norristown, PA | ||
| Farmer Weaver | weaver001far | 1899 | 4/30-9/11 | Milwaukee Brewers/Creams | Western League | Milwaukee, WI | |
| Charlie Weber | weber-003cha | 1899 | 6/23-7/5 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Charlie Weber | weber-003cha | 1899 | San Antonio Bronchos | Texas Association | San Antonio, TX | ||
| Pete Weckbecker | weckbe001pet | 1899 | 4/17-6/22 | San Antonio Bronchos | Texas Association | San Antonio, TX | |
| Al Weddige | weddig001alb | 1899 | 4/27-6/12 | Newark Colts | Atlantic League | Newark, NJ | |
| Al Weddige | weddig001alb | 1899 | 6/22-7/15 | Reading Coal Heavers | Atlantic League | Reading, PA | |
| Al Weddige | weddig001alb | 1899 | +7/21-8/7 | Bristol Bell Makers | Connecticut State League | Bristol, CT | |
| Fred Weed | weed--001fre | 1899 | 16 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Genser Weidensaul | weiden001yen | 1899 | 4/11- | Bucknell Col. | College | , | |
| Genser Weidensaul | weiden001yen | 1899 | 34 g. | New Castle Quakers | Interstate League | New Castle, PA | |
| George Weidman | wiedma001stu | 1899 | , | ||||
| Curt Weigand | weigan001cur | 1899 | Wilmington DE | Independent | Wilmington, DE | ||
| Frank Weikart | weiker001fra | 1899 | 41 g. | Mobile Blackbirds | Southern League | Mobile, AL | |
| Frank Weikart | weiker001fra | 1899 | 6/4-7/5 | Houston Buffaloes | Texas Association | Houston, TX | |
| Jake Weimer | weimer001jac | 1899 | 17 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Weinphal | weinph001--- | 1899 | 5/18 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| Louis Weisbecker | weisbe001lou | 1899 | 5/10-8/8 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Louis Weisbecker | weisbe001lou | 1899 | 8/9-8/11 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Harry Welch | welch-002har | 1899 | Omaha HS | HighSchool | , | ||
| Jake Wells | wells-001jak | 1899 | 4/27-8/6 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Milo Wells | wells-001mil | 1899 | 5/3-9/20 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| J.O. Welsh | welsh-001j-- | 1899 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | ||
| J.O. Welsh | welsh-001j-- | 1899 | 5/30-6/3 | Worcester Farmers | Eastern League | Worcester, MA | |
| Fred Wenig | wenig-001fre | 1899 | 8/27-9/16 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Jack Wente | wente-001jac | 1899 | 4/27-8/6 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Jack Wente | wente-001jac | 1899 | -9/19 | 19 g. | Mansfield Haymakers | Interstate League | Mansfield, OH |
| Jack Wentz | wentz-001jac | 1899 | 5/12-9/9 | Oswego Grays | New York State League | Oswego, NY | |
| Perry Werden | werden001per | 1899 | 4/28-9/11 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Andrew Werner | werner001and | 1899 | 5/12-7/26 | Albany Senators | New York State League | Albany, NY | |
| Andrew Werner | werner001and | 1899 | 8/4-9/9 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Joe Werrick | werric001joe | 1899 | 5/1-5/28 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Joe Werrick | werric001joe | 1899 | 6/14-6/28 | Dayton Veterans | Interstate League | Dayton, OH | |
| Frank West | west--002fra | 1899 | 4/29-8/5 | Allentown Peanuts | Atlantic League | Allentown, PA | |
| Huyler Westervelt | wester002huy | 1899 | Orange AC | Independent | Orange, NJ | ||
| Westlake | westla001--- | 1899 | 6/28-6/30 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Gus Weyhing | weyhin001aug | 1899 | 43 g. | Washington | National League | Washington, DC | |
| Bobby Whalen | whalen001bob | 1899 | 2 g. | Sacramento Gilt Edges | California League | Sacramento, CA | |
| Edward Whalen | whalen001edw | 1899 | 8/27-9/17 | Dayton Veterans | Interstate League | Dayton, OH | |
| Jimmy Whalen | whalen003wil | 1899 | 28 g. | Watsonville Hayseeds/Gardiners | California League | Watsonville, CA | |
| Jimmy Whalen | whalen003wil | 1899 | 17 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Babe Whaling | whalin001f-- | 1899 | +9/10+ | 9 g. | San Bernardino | Southern California League | San Bernardino, CA |
| Babe Whaling | whalin001f-- | 1899 | 10 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Bill Whaling | whalin001bil | 1899 | 20 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Wheeler | wheele001--- | 1899 | 5/12-5/23 | Fitchburg/Lawrence | New England League | Fitchburg, MA | |
| Wheeler | wheele001--- | 1899 | 5/24-5/27 | Fitchburg/Lawrence | New England League | Lawrence, MA | |
| Ed Wheeler | wheele003edw | 1899 | 6/5-6/13 | Worcester Farmers | Eastern League | Worcester, MA | |
| Ed Wheeler | wheele003edw | 1899 | 6/18-8/2 | Binghamton Bingos | New York State League | Binghamton, NY | |
| George Wheeler | wheele002geo | 1899 | -5/30 | 6 g. | Philadelphia | National League | Philadelphia, PA |
| George Wheeler | wheele002geo | 1899 | 7/17-9/9 | Rome Romans | New York State League | Rome, NY | |
| Bobby Wheelock | wheelo001bob | 1899 | 5/17-9/16 | New London Whalers | Connecticut State League | New London, CT | |
| Whipple | whippl001--- | 1899 | 8/5 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Whissen | whisse001--- | 1899 | 4/30-5/19 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Whissen | whisse001--- | 1899 | +6/2+ | Wabash | Indiana-Illinois League | Wabash, IN | |
| Whissen | whisse001--- | 1899 | 8/23-9/16 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Lew Whistler | whistl002lew | 1899 | 4/29-5/24 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Lew Whistler | whistl002lew | 1899 | 5/30-8/7 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Lew Whistler | whistl002lew | 1899 | 8/17-8/26 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Deke White | white-001dek | 1899 | Ilion | Independent | Ilion, NY | ||
| Doc White | white-001guy | 1899 | Georgetown Col. | College | , | ||
| Doc White | white-001guy | 1899 | Orange AC | s-p | Orange, NJ | ||
| Jack White | white-012joh | 1899 | 4/27-8/8 | Buffalo Bisons | Western League | Buffalo, NY | |
| Jack White | white-012joh | 1899 | 8/17-9/6 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Grand Rapids, MI | |
| Sol White | white-001kin | 1899 | Cuban X Giants | Independent | Cuban, | ||
| Whiteside | 1899 | 1 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Hobe Whiting | whitin001hob | 1899 | 5/10-8/1 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Hobe Whiting | whitin001hob | 1899 | 8/13-8/17 | Providence Clamdiggers | Eastern League | Providence, RI | |
| Hobe Whiting | whitin001hob | 1899 | 8/21-9/4 | Taunton Herrings | New England League | Taunton, MA | |
| Whitney | whitne009--- | 1899 | 6/23-7/7 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Granville Whittaker | whitak001gra | 1899 | 7/4- | Griffin’s Corner NY | Independent | Griffin’s Corner, NY | |
| Bob Wicker | wicker001rob | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Mattoon, IL | ||
| Bob Wicker | wicker001rob | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | ||
| Wilbanks | wilban001--- | 1899 | 7/5 | Austin Senators | Texas Association | Austin, TX | |
| Wilder | wilder013--- | 1899 | 1 g. | St. Thomas Saints | Canadian League | St. Thomas, ON | |
| Edwin Wilder | wilder001edw | 1899 | 4/29-5/15 | Worcester Farmers | Eastern League | Worcester, MA | |
| Edwin Wilder | wilder001edw | 1899 | 8/7-8/9 | Portland Phenoms | New England League | Portland, ME | |
| Horace Wilds | wilds-001hor | 1899 | 7 g. | San Bernardino | Southern California League | San Bernardino, CA | |
| Horace Wilds | wilds-001hor | 1899 | 9 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | |
| Horace Wilds | wilds-001hor | 1899 | San Bernardino | Southern California League | San Bernardino, CA | ||
| Jack Wiley | wiley-001joh | 1899 | 5/10-6/27 | Taunton Herrings | New England League | Taunton, MA | |
| Jack Wiley | wiley-001joh | 1899 | 7/1-8/8 | Pawtucket Colts | New England League | Pawtucket, RI | |
| Jack Wiley | wiley-001joh | 1899 | 8/11-9/16 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Harry Wilhelm | wilhel002har | 1899 | 4/27-8/6 | Lancaster Maroons | Atlantic League | Lancaster, PA | |
| Harry Wilhelm | wilhel002har | 1899 | 8/12-8/23 | 5 g. | Louisville | National League | Louisville, KY |
| Jack Wilkinson | wilkin004jac | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Mattoon, IL | ||
| Frank Will | wills-002fra | 1899 | 1 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Williams | willia035--- | 1899 | 6/18-6/19 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Williams | 1899 | Taunton Herrings | New England League | Taunton, MA | |||
| Art Williams | willia002art | 1899-01 | Tufts College | College | , | ||
| Bill Williams | 1899 | +6/4+ | Cuban X Giants | Independent | Cuban, | ||
| Clare Williams | willia007cla | 1899 | Butte | Independent | Butte, MT | ||
| Dal Williams | willia001lev | 1899 | 4/29-8/7 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Dave Williams | willia013dav | 1899 | Springville NY | Independent | Springville, NY | ||
| Gene Williams | willia002gen | 1899 | 1 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Jimmy Williams | willia025jam | 1899 | 4/15 - | 153 g. | Pittsburgh | National League | Pittsburgh, PA |
| Pop Williams | willia008wal | 1899 | 4/29-9/8 | Toronto Maple Leafs | Eastern League | Toronto, ON | |
| Robert Williams | willia028rob | 1899 | 62 g. | Santa Cruz Beachcombers/Sand Crabs | California League | Santa Cruz, CA | |
| Henry Willig | willig001hen | 1899 | 5/15-8/21 | Albany Senators | New York State League | Albany, NY | |
| Henry Willig | willig001hen | 1899 | 8/24-9/6 | Auburn Maroons/Troy Trojans | New York State League | Troy, NY | |
| Delaware Willis | willis001del | 1899 | +5/13+ | Wilm.-Aetna | Independent | , | |
| Vic Willis | willis001vic | 1899 | 41 g. | Boston | National League | Boston, MA | |
| Robert Willner | willne001rob | 1899 | Medford WI | Independent | Medford, WI | ||
| Charles Wills | wills-001cha | 1899 | 5/6-5/21 | Mansfield Haymakers | Interstate League | Mansfield, OH | |
| Dave Wills | wills-001dav | 1899 | U. of Virginia | College | , | ||
| Dave Wills | wills-001dav | 1899 | 6/8-8/31 | 24 g. | Louisville | National League | Louisville, KY |
| Walt Wilmot | wilmot001wal | 1899 | 4/28-8/22 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Wilson | wilson127--- | 1899 | 6/6-6/12 | New Haven Blues | Connecticut State League | New Haven, CT | |
| Bill Wilson | wilson026wil | 1899 | 4/28-9/8 | Kansas City Blues | Western League | Kansas City, MO | |
| Ed Wilson | 1899 | Cuban X Giants | Independent | Cuban, | |||
| Gary Wilson | wilson010jam | 1899 | 5/17-9/16 | Meriden Silverites | Connecticut State League | Meriden, CT | |
| George Wilson | wilson019geo | 1899 | Chicago Columbia Giants | Independent | Chicago, IL | ||
| Harry Wilson | wilson003hen | 1899 | 6/9-8/20 | Hartford Indians | Eastern League | Hartford, CT | |
| Howard Wilson | wilson001how | 1899 | 9/13 | 1 g. | Cleveland | National League | Cleveland, OH |
| J. Wilson | wilson005j-- | 1899 | Kansas City Blues | Western League | Kansas City, MO | ||
| Parke Wilson | wilson001par | 1899 | -10/14 | 98 g. | New York | National League | New York, NY |
| W.J. Wilson | wilson005w-- | 1899 | 17 g. | Los Angeles Angelenos | Southern California League | Los Angeles, CA | |
| Willis Wilson | wilson026wil | 1899 | no g. | Kansas City Blues | Western League | Kansas City, MO | |
| Willis Wilson | wilson025wil | 1899 | 31 g. | Ottumwa Giants | Western Association | Ottumwa, IA | |
| Willis Wilson | wilson025wil | 1899 | Sioux Falls | Independent | Sioux Falls, SD | ||
| Zeke Wilson | wilson002zek | 1899 | 5 g. | St. Louis | National League | St. Louis, MO | |
| Lewis Wiltse | wiltse001lew | 1899 | 5/3- | 53 g. | Toledo Mud Hens | Interstate League | Toledo, OH |
| Lewis Wiltse | wiltse001lew | 1899 | Ilion | Independent | Ilion, NY | ||
| Frank Wingert | winger001fra | 1899 | +8/16+ | Parsons | Independent | Parsons, KS | |
| George Winters | winter002geo | 1899 | 4/29-8/3 | Syracuse Stars | Eastern League | Syracuse, NY | |
| George Winters | winter002geo | 1899 | 8/7-8/19 | Montreal Royals | Eastern League | Montreal, QC | |
| Sam Wise | wise--001sam | 1899 | 4/27-6/7 | Newark Colts | Atlantic League | Newark, NJ | |
| Sam Wise | wise--001sam | 1899 | 7/3-8/11 | Umpire | East | , | |
| A. Withers | wither001a-- | 1899 | 5/19-5/21 | Chatham Reds | Canadian League | Chatham, ON | |
| Chicken Wolf | wolf--001chi | 1899 | Loui.-Reccius | LouisCity | Louisville, KY | ||
| Barney Wolfe | wolfe-001--- | 1899 | 5/1-7/18 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Grand Rapids, MI | |
| Barney Wolfe | wolfe-001--- | 1899 | 7/22-7/30 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Columbus, OH | |
| Barney Wolfe | wolfe-001--- | 1899 | 8/1-9/12 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Maurice Wolfe | wolfe-001mau | 1899 | 5/12-9/8 | Binghamton Bingos | New York State League | Binghamton, NY | |
| Jim Wolley | 1899 | 4 g. | Los Angeles Merchants | Southern California League | Los Angeles, CA | ||
| Harry Wolsieffer | wolsif001w-- | 1899 | 5/10-5/13 | Newport Colts | New England League | Newport, RI | |
| Leon Wolters | wolter001leo | 1899 | Manistee MI | Independent | Manistee, MI | ||
| Harry Wolverton | wolver001har | 1899 | 4/14 - | 99 g. | Chicago | National League | Chicago, IL |
| Bob Wood | wood--005rob | 1899 | 63 g. | Cincinnati | National League | Cincinnati, OH | |
| Carl Wood | wood--001car | 1899 | Fulton MO | Fulton, MO | |||
| Mike Woodlock | woodlo001mic | 1899 | 4/29-7/4 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Mike Woodlock | woodlo001mic | 1899 | 7/7-9/9 | Utica Pentups | New York State League | Utica, NY | |
| Woodruff | woodru001--- | 1899 | 9/8 | Springfield Ponies | Eastern League | Springfield, MA | |
| Pete Woodruff | woodru002pet | 1899 | +5/20-8/24 | New London Whalers | Connecticut State League | New London, CT | |
| Pete Woodruff | woodru002pet | 1899 | 8/29-9/7 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Pete Woodruff | woodru002pet | 1899 | 9/8-9/16 | New London Whalers | Connecticut State League | New London, CT | |
| Pete Woodruff | woodru002pet | 1899 | 9/19 - | 20 g. | New York | National League | New York, NY |
| Sam Woodruff | woodru001orv | 1899 | 32 g. | New Orleans Pelicans | Southern League | New Orleans, LA | |
| Sam Woodruff | woodru001orv | 1899 | 6/11-7/9 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Sam Woodruff | woodru001orv | 1899 | 7/13-8/6 | Newark Colts | Atlantic League | Newark, NJ | |
| Walt Woods | woods-002wal | 1899 | 42 g. | Louisville | National League | Louisville, KY | |
| C.F. Woodworth | woodwo002c-- | 1899 | Brown Univ. | College | , | ||
| James Wooley | wooley002jam | 1899 | Los Angeles Angelenos | Southern California League | Los Angeles, CA | ||
| G.A. Woolford | woolfo001g-- | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Mattoon, IL | ||
| Frank Wooliver | wooliv001fra | 1899 | Iola | Independent | Iola, KS | ||
| Tom Works | works-001tom | 1899 | 28 g. | San Diego Fullers | Southern California League | San Diego, CA | |
| Wright | wright067--- | 1899 | 7/1 | Taunton Herrings | New England League | Taunton, MA | |
| Gene Wright | wright001cla | 1899 | Greenville PA | Independent | Greenville, PA | ||
| Joe Wright | wright001joe | 1899 | 30 g. | Rock Island-Moline Islanders | Western Association | Rock Island, IL | |
| Joe Wright | wright001joe | 1899 | -9/20 | 65 g. | Youngstown Little Giants | Interstate League | Youngstown, OH |
| Pat Wright | wright003pat | 1899 | 5/1-9/20 | New Castle Quakers | Interstate League | New Castle, PA | |
| Rasty Wright | wright001ras | 1899 | 4/27-5/10 | Paterson Giants | Atlantic League | Paterson, NJ | |
| Rasty Wright | wright001ras | 1899 | 6/13-6/20 | Buffalo Bisons | Western League | Buffalo, NY | |
| Zeke Wrigley | wrigle001zek | 1899 | 4/27-8/5 | Richmond Bluebirds | Atlantic League | Richmond, VA | |
| Zeke Wrigley | wrigle001zek | 1899 | 8/8-9/9 | Syracuse Stars | Eastern League | Syracuse, NY | |
| Zeke Wrigley | wrigle001zek | 1899 | 4 g. | New York | National League | New York, NY | |
| Zeke Wrigley | wrigle001zek | 1899 | -10/14 | 15 g. | Brooklyn | National League | Brooklyn, NY |
| Ad Yale | yale--001wil | 1899 | 5/17-9/16 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Yates | yates-006--- | 1899 | 8/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| George Yeager | yeager001geo | 1899 | 4/29-9/4 | Worcester Farmers | Eastern League | Worcester, MA | |
| George Yeager | yeager001geo | 1899 | 3 g. | Boston | National League | Boston, MA | |
| Joe Yeager | yeager002jos | 1899 | 23 g. | Brooklyn | National League | Brooklyn, NY | |
| Stan Yerkes | yerkes001sta | 1899 | 5/14-6/16 | Utica Pentups | New York State League | Utica, NY | |
| Stan Yerkes | yerkes001sta | 1899 | 7/2-8/13 | Oswego Grays | New York State League | Oswego, NY | |
| Stan Yerkes | yerkes001sta | 1899 | 8/15-9/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Bill Yerrick | banks-001bil | 1899 | no g. | Rochester Bronchos | Eastern League | Rochester, NY | |
| Charles Young | young-002cha | 1899 | 5/1-5/12 | Detroit Tigers | Western League | Detroit, MI | |
| Charles Young | young-002cha | 1899 | 5/21 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Charles Young | young-002cha | 1899 | 11 g. | Bloomington Blues | Western Association | Bloomington, IL | |
| Charles Young | young-002cha | 1899 | Kokomo/Mattoon | Indiana-Illinois League | Mattoon, IL | ||
| Charles Young | young-002cha | 1899 | Anderson/Kokomo/Bloomington | Indiana-Illinois League | Bloomington, IL | ||
| Charley Young | 1899 | no g. | Brooklyn | National League | Brooklyn, NY | ||
| Cy Young | young-001den | 1899 | 44 g. | St. Louis | National League | St. Louis, MO | |
| Elmer Young | young-001elm | 1899 | Norristown | Independent | Norristown, PA | ||
| Elmer Young | young-001elm | 1899 | Oil City | Oil City, PA | |||
| Henry Youngman | youngm001hen | 1899 | 6/29-8/19 | Dayton Veterans | Interstate League | Dayton, OH | |
| Frederick Zaeder | zaeder001fre | 1899 | 5/10-5/29 | Cambridge Orphans/Lowell Orphans | New England League | Cambridge, MA | |
| Frederick Zaeder | zaeder001fre | 1899 | 5/30-6/1 | Cambridge Orphans/Lowell Orphans | New England League | Lowell, MA | |
| Jack Zalusky | zalusk001joh | 1899 | Rock Rapids IA | Independent | Rock Rapids, IA | ||
| Dave Zearfoss | zearfo001dav | 1899 | 6/2-7/2 | Minneapolis Millers | Western League | Minneapolis, MN | |
| Dave Zearfoss | zearfo001dav | 1899 | Billings | Independent | Billings, MT | ||
| Sam Zeigenbein/Zie | zeigen001sam | 1899 | +9/24+ | Jackson- | Amat | Jackson, | |
| Charlie Ziegler | ziegle001cha | 1899 | -7/4 | 42 g. | Chatham Reds | Canadian League | Chatham, ON |
| Charlie Ziegler | ziegle001cha | 1899 | 7/14-8/17 | Wheeling Stogies | Interstate League | Wheeling, WV | |
| Charlie Ziegler | ziegle001cha | 1899 | 8/14-9/13 | Grand Rapids Furniture Makers/Columbus Senators/Sp | Interstate League | Springfield, OH | |
| Charlie Ziegler | ziegle001cha | 1899 | 9/23- | 2 g. | Cleveland | National League | Cleveland, OH |
| Charles Zietz | zietz-001cha | 1899 | 4/28-5/15 | Columbus Buckeyes/Senators/Grand Rapids Furniturem | Western League | Columbus, OH | |
| Charles Zietz | zietz-001cha | 1899 | 14 g. | Quincy/Dubuque | Western Association | Dubuque, IA | |
| Charles Zietz | zietz-001cha | 1899 | 6/19-9/16 | Bridgeport Orators | Connecticut State League | Bridgeport, CT | |
| Charles Zimmer | zimmer001cha | 1899 | 20 g. | Cleveland | National League | Cleveland, OH | |
| Charles Zimmer | zimmer001cha | 1899 | 75 g. | Louisville | National League | Louisville, KY | |
| Eddie Zinram | zinram001edw | 1899 | 5/2-5/19 | Fort Wayne Indians | Interstate League | Fort Wayne, IN | |
| Eddie Zinram | zinram001edw | 1899 | -6/ | Umpire | IntSt | , | |
| Eddie Zinram | zinram001edw | 1899 | 7/- | 3 g. | St. Thomas Saints | Canadian League | St. Thomas, ON |
| Charles Zinzer | zinzer001cha | 1899 | 5/12-6/6 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Charles Zinzer | zinzer001cha | 1899 | 8/4-9/9 | Schenectady Electricians | New York State League | Schenectady, NY | |
| Joe Zoellers | zoelle002jos | 1899 | no g. | Baltimore | National League | Baltimore, MD | |
| Joe Zoellers | zoelle002jos | 1899 | +9/17+ | St.L-Sports | Independent | St. Louis, MO |