 Standings at start of day | Results for September 5, 1888 Game 377: Milwaukee 4, Des Moines 2 Game 1 |
| Game 377: Milwaukee @ Des Moines Milwaukee 4, Des Moines 2 Milwaukee Sentinel  Game 1 | Game 378: Milwaukee @ Des Moines Des Moines 6, Milwaukee 3 Milwaukee Sentinel  Game 2 | Game 379: Davenport @ Kansas City Kansas City 15, Davenport 3 Kansas City Times  | Game 380: Chicago @ Omaha Omaha 8, Chicago 4 Omaha Daily Bee  | Game 381: Sioux City @ St. Paul St. Paul 4, Sioux City 1 St. Paul Globe  |