 Standings at start of day | Results for September 28, 1888 Game 450: Sioux City 4, St. Paul 2 Game 1 |
| Game 450: St. Paul @ Sioux City Sioux City 4, St. Paul 2 Sioux City Journal  Game 1 | Game 451: St. Paul @ Sioux City St. Paul 7, Sioux City 1 Sioux City Journal  Game 2 | Game 452: Omaha @ Davenport Omaha 1, Davenport 0 Quad City Times  |