2003 Colorado Rockies season Game log May

| Date_ | Opponent | Score | Loss | Record |
|---|---|---|---|---|
| May 14 | Mets | 6–5 | Stanton (2–3) | 19–21 |
| May 15 | Expos | 4–2 | Tucker (0–1) | 20–21 |
| May 16 | Expos | 4–1 | Cruz (3–4) | 20–22 |
| May 17 | Expos | 6–4 (10) | Jones (1–2) | 20–23 |
| May 18 | Expos | 4–0 | Ohka (3–5) | 21–23 |
| May 20 | @ Dodgers | 3–1 | Oliver (1–3) | 21–24 |
| May 21 | @ Dodgers | 3–2 | Jennings (3–4) | 21–25 |
| May 22 | @ Dodgers | 4–3 | Cook (1–4) | 21–26 |
| May 23 | Giants | 10–7 | Moss (5–3) | 22–26 |
| May 24 | Giants | 5–1 | Elarton (0–1) | 22–27 |
| May 25 | Giants | 5–1 | Foppert (2–4) | 23–27 |
| May 26 | Giants | 12–7 | Nathan (5–2) | 24–27 |
| May 27 | Dodgers | 7–3 | Ishii (4–2) | 25–27 |
| May 28 | Dodgers | 6–0 | Dreifort (4–4) | 26–27 |