 Standings at start of day | Results for May 31, 1888 Game 87: Chicago 9, Minneapolis 8 |
| Game 87: Minneapolis @ Chicago Chicago 9, Minneapolis 8 Chicago Tribune  | Game 88: St. Louis @ Des Moines Des Moines 16, St. Louis 2 Des Moines Register  | Game 89: St. Paul @ Milwaukee St. Paul 13, Milwaukee 4 Milwaukee Sentinel  |