| Year | W | L | Sv | Hold | IP | H | BB | SO | ER | ERA | WHIP | Rate |
| 2026 proj | 2 | 3 | 0 | 0 | 48.0 | 51 | 19 | 42 | 26 | 4.88 | 1.458 | 0.7 |
| Date | News |
| 3/23/26 | Rockies reliever RJ Petit will miss this season after having Tommy John surgery. Colorado Rockies reliever RJ Petit will miss this season after he had Tommy John surgery with an internal brace. Source: https://www.denver7.com/sports/rockies/rockies-rel... |
| 3/10/26 | Colorado Rockies pitching prospect RJ Petit has sprained UCL in his right elbow. Colorado Rockies reliever RJ Petit has a sprained UCL ligament in his right elbow, sidelining him indefinitely. Source: https://www.denver7.com/sports/rockies/colorado-ro... |
| 3/09/26 | Rockies' Petit has UCL sprain, out indefinitely. Rockies 6-foot-8 pitching prospect RJ Petit has a sprained UCL ligament in his right elbow and is out indefinitely. Source: https://www.espn.com/mlb/story/_/id/48155765/rocki... |