1999 Colorado Rockies season Game log August

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| August 25 | @ Pirates | 9–3 | Kile (7–12) | 12535 | 57–71 |
| August 26 | @ Pirates | 8–4 | Astacio (14–10) | 12649 | 57–72 |
| August 28 | Phillies | 11–6 | Aldred (4–3) | 42744 | 58–72 |
| August 28 | Phillies | 4–0 | Grahe (0–1) | 47217 | 59–72 |
| August 29 | Phillies | 6–5 | Byrd (14–7) | 43344 | 60–72 |
| August 30 | Pirates | 11–8 | Ramírez (1–4) | 41872 | 60–73 |
| August 31 | Pirates | 9–8 (10) | Lee (3–2) | 41729 | 60–74 |