1998 Colorado Rockies season Game log May

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| May 2 | @ Mets | 7–3 | Cook (2–1) | 19968 | 13–16 |
| May 3 | @ Mets | 5–2 | Astacio (2–4) | 19493 | 13–17 |
| May 4 | @ Phillies | 11–2 | Stephenson (0–2) | 11403 | 14–17 |
| May 5 | @ Phillies | 6–1 | Grace (1–4) | 13672 | 15–17 |
| May 6 | @ Phillies | 7–6 (10) | McElroy (0–1) | 19538 | 15–18 |
| May 7 | @ Expos | 2–1 | Wright (2–3) | 7075 | 15–19 |
| May 8 | @ Expos | 7–5 | Hermanson (3–3) | 11725 | 16–19 |
| May 9 | @ Expos | 4–0 | Thomson (2–3) | 12014 | 16–20 |
| May 10 | @ Expos | 5–3 | Kline (1–2) | 10041 | 17–20 |
| May 11 | @ Pirates | 5–2 | Ritz (0–1) | 9498 | 17–21 |
| May 12 | @ Pirates | 6–0 | Wright (2–4) | 12954 | 17–22 |