 Standings at start of day | Results for September 8, 1888 Game 390: Des Moines 9, Chicago 0 Game 1 |
| Game 390: Chicago @ Des Moines Des Moines 9, Chicago 0 Chicago Tribune  Game 1 | Game 391: Chicago @ Des Moines Chicago 6, Des Moines 5 Chicago Tribune  Game 2 | Game 392: St. Paul @ Kansas City St. Paul 3, Kansas City 2 Kansas City Times  | Game 393: Milwaukee @ Omaha Omaha 7, Milwaukee 3 Omaha Daily Bee  | Game 394: Davenport @ Sioux City Sioux City 11, Davenport 10 Sioux City Journal  |