2004 Colorado Rockies season Game log September

| Date_ | Opponent | Score | Loss | Record |
|---|---|---|---|---|
| September 15 | @ Diamondbacks | 3–2 | Estes (14–7) | 63–82 |
| September 16 | @ Diamondbacks | 8–5 | Dohmann (0–3) | 63–83 |
| September 17 | Dodgers | 8–6 (10) | Chacón (1–8) | 63–84 |
| September 18 | Dodgers | 8–1 | Pérez (6–6) | 64–84 |
| September 19 | Dodgers | 7–6 | Chacón (1–9) | 64–85 |
| September 22 | Diamondbacks | 4–2 | Johnson (14–14) | 65–85 |
| September 23 | Diamondbacks | 7–1 | Webb (6–16) | 66–85 |
| September 23 | Diamondbacks | 2–1 (10) | Choate (2–4) | 67–85 |
| September 24 | Cardinals | 5–4 | Jennings (11–12) | 67–86 |
| September 25 | Cardinals | 10–6 | Harikkala (6–5) | 67–87 |
| September 26 | Cardinals | 9–3 | Gissell (0–1) | 67–88 |
| September 27 | @ Dodgers | 8–7 | Reed (3–8) | 67–89 |
| September 28 | @ Dodgers | 5–4 | Harikkala (6–6) | 67–90 |
| September 29 | @ Dodgers | 4–1 | Brazobán (4–2) | 68–90 |
| September 30 | @ Dodgers | 4–2 (11) | Fuentes (2–4) | 68–91 |