1989 Chicago Cubs season Game log September

| Date_ | Opponent | Score | Loss | Save_ |
|---|---|---|---|---|
| September 20 | Phillies | 9 - 8 | Lancaster (3-2) | McDowell (19) |
| September 21 | Phillies | 9 - 1 | Mulholland (4-7) | || 22,885 ||86-67|| |
| September 22 | Pirates | 4 - 2 | Drabek (13-12) | Williams (35) |
| September 23 | Pirates | 3 - 2 | Bair (2-3) | || 36,849 ||88-67|| |
| September 24 | Pirates | 4 - 2 | Robinson (7-12) | Pico (1) |
| September 25 | @ Expos | 4 - 3 10 | Sanderson (11-9) | || 10,305 ||89-68|| |
| September 26 | @ Expos | 3 - 2 | Den. Martinez (16-7) | Williams (36) |
| September 27 | @ Expos | 7 - 2 | Thompson (0-2) | Pico (2) |
| September 29 | @ Cardinals | 7 - 5 | Assenmacher (3-4) | Terry (2) |
| September 30 | @ Cardinals | 6 - 4 | Costello (5-4) | Lancaster (8) |