2005 Colorado Rockies season Game log September

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| September 2 | Dodgers | 11–3 | Weaver (13–9) | 19272 | 53–81 |
| September 3 | Dodgers | 11–1 | Houlton (5–8) | 23398 | 54–81 |
| September 4 | Dodgers | 7–6 (10) | Sánchez (4–5) | 25069 | 55–81 |
| September 6 | @ Padres | 6–5 | Park (12–7) | 26483 | 56–81 |
| September 7 | @ Padres | 4–2 | Francis (12–11) | 23893 | 56–82 |
| September 8 | @ Padres | 3–2 (10) | Acevedo (2–4) | 34366 | 56–83 |
| September 9 | Diamondbacks | 7–1 | B. Kim (5–11) | 20045 | 56–84 |
| September 10 | Diamondbacks | 8–5 | Day (1–3) | 20284 | 56–85 |
| September 11 | Diamondbacks | 7–2 | Ortiz (5–10) | 20476 | 57–85 |
| September 12 | @ Dodgers | 7–0 | Francis (12–12) | 33255 | 57–86 |
| September 13 | @ Dodgers | 6–4 | Jackson (1–2) | 30535 | 58–86 |