 Standings at start of day | Results for August 14, 1888 Game 307: Chicago 8, Sioux City 5 |
| Game 307: Sioux City @ Chicago Chicago 8, Sioux City 5 Chicago Tribune  | Game 308: Des Moines @ Milwaukee Des Moines 6, Milwaukee 3 Milwaukee Sentinel  | Game 309: Omaha @ Minneapolis Omaha 2, Minneapolis 0 Minneapolis Star Tribune  | Game 310: Kansas City @ St. Paul Kansas City 7, St. Paul 3 St. Paul Globe  Game 1 | Game 311: Kansas City @ St. Paul St. Paul 2, Kansas City 0 St. Paul Globe  Game 2 |