| Year | W | L | Sv | Hold | IP | H | BB | SO | ER | ERA | WHIP | Rate |
| 2026 proj | 10 | 11 | 0 | 0 | 158.0 | 146 | 53 | 183 | 74 | 4.21 | 1.259 | 31.5 |
| 2026 | 0 | 8 | 0 | 0 | 60.7 | 64 | 32 | 72 | 39 | 5.79 | 1.582 | -23.3 |
| 2025 | 8 | 15 | 0 | 0 | 161.0 | 147 | 59 | 188 | 83 | 4.64 | 1.280 | 22.6 |
| 2024 | 13 | 7 | 0 | 0 | 162.0 | 135 | 38 | 194 | 57 | 3.17 | 1.068 | 79.6 |
| Date | News |
| 6/13/26 | Tigers' Flaherty leaves start early due to left le.... Tigers pitcher Jack Flaherty pitched just three innings Friday night against the Guardians before leaving his start due to left leg discomfort. Source: https://www.espn.com/mlb/story/_/id/49045429/tiger... |
| 6/13/26 | Tigers' Flaherty leaves start early due to left le.... Tigers pitcher Jack Flaherty pitched just three innings Friday night against the Guardians before leaving his start due to left leg discomfort. Source: https://www.espn.com/mlb/story/_/id/49045429/tiger... |
| 6/12/26 | Tigers' Flaherty leaves start early due to left le.... Tigers pitcher Jack Flaherty pitched just three innings Friday night against the Guardians before leaving his start due to left leg discomfort. Source: https://www.espn.com/mlb/story/_/id/49045429/tiger... |
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