1984 Chicago Cubs season Game log September

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| September 23 | @ Cardinals | 8 - 1 | Ownbey (0-3) | 0 | 91-63 |
| September 23 | @ Cardinals | 4 - 2 | Andujar (19-14) | 46083 | 92-63 |
| September 24 | @ Pirates | 4 - 1 | McWilliams (11-11 | 5472 | 93-63 |
| September 25 | @ Pirates | 7 - 1 | Patterson (0-1) | 4068 | 93-64 |
| September 26 | @ Pirates | 5 - 2 | Tunnell (1-7) | 3365 | 94-64 |
| September 28 | Cardinals | 4 - 1 | Bordi (5-2) | 31021 | 94-65 |
| September 29 | Cardinals | 9 - 5 | Cox (9-11) | 33954 | 95-65 |
| September 30 | Cardinals | 2 - 1 | Sutter (5-7) | 33100 | 96-65 |