| 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 |
| 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 |
| 2023 | 8 | 9 | 0 | 1 | 144.3 | 162 | 66 | 148 | 80 | 4.99 | 1.580 | 1.9 |
| Date | News |
| 11/05/25 | Sources: Tigers' Flaherty stays put, to make $20M. Tigers right-hander Jack Flaherty is not opting out of his $20M contract for 2026, sources told ESPN, and will return to Detroit, where he has played the past two seasons. Source: https://www.espn.com/mlb/story/_/id/46850377/sourc... |
| 11/05/25 | Sources: Tigers' Flaherty stays put, to make $20M. Tigers right-hander Jack Flaherty is not opting out of his $20M contract for 2026, sources told ESPN, and will return to Detroit, where he has played the past two seasons. Source: https://www.espn.com/mlb/story/_/id/46850377/sourc... |
| 11/04/25 | Sources: Tigers' Flaherty stays put, to make $20M. Tigers right-hander Jack Flaherty is not opting out of his $20M contract for 2026, sources told ESPN, and will return to Detroit, where he has played the past two seasons. Source: https://www.espn.com/mlb/story/_/id/46850377/sourc... |
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