1989 Chicago Cubs season Game log September

| Date_ | Opponent | Score | Loss | Save_ |
|---|---|---|---|---|
| September 9 | Cardinals | 3 - 2 10 | Dayley (3-2) | || 37,633 ||79-63|| |
| September 10 | Cardinals | 4 - 1 | Hill (7-12) | Williams (32) |
| September 11 | Expos | 4 - 3 | Langston (11-7) | Williams (33) |
| September 12 | Expos | 2 - 0 | B. Smith (10-9) | || 36,333 ||82-63|| |
| September 13 | Expos | 3 - 1 | Gross (11-11) | Lancaster (7) |
| September 15 | @ Pirates | 7 - 2 | Belinda (0-1) | || 12,607 ||84-63|| |
| September 16 | @ Pirates | 8 - 6 | Maddux (17-12) | || 15,668 ||84-64|| |
| September 17 | @ Pirates | 2 - 0 | Bielecki (16-7) | || 21,081 ||84-65|| |
| September 18 | Mets | 10 - 6 | Viola (3-5) | Williams (34) |
| September 19 | Mets | 5 - 2 | Wilson (5-4) | Gooden (1) |