2003 Colorado Rockies season Game log June

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| June 1 | @ Giants | 4–0 | Cook (2–5) | 41404 | 27–30 |
| June 2 | @ Giants | 4–1 | Schmidt (4–2) | 34231 | 28–30 |
| June 3 | Indians | 7–3 | Rodríguez (3–6) | 22326 | 29–30 |
| June 4 | Indians | 2–1 | Traber (2–3) | 22222 | 30–30 |
| June 5 | Indians | 7–4 | Sabathia (4–3) | 25221 | 31–30 |
| June 7 | Royals | 13–11 | Chacón (8–3) | 25421 | 31–31 |
| June 7 | Royals | 9–5 | Jones (1–3) | 26435 | 31–32 |
| June 8 | Royals | 8–7 | DeHart (0–2) | 30084 | 32–32 |
| June 10 | @ Twins | 5–0 | Radke (5–6) | 18886 | 33–32 |
| June 11 | @ Twins | 7–4 | Cook (2–6) | 17942 | 33–33 |
| June 12 | @ Twins | 15–3 | Oliver (3–5) | 18003 | 33–34 |