| Year | W | L | Sv | Hold | IP | H | BB | SO | ER | ERA | WHIP | Rate |
| 2025 proj | 9 | 7 | 0 | 0 | 135.0 | 127 | 45 | 151 | 57 | 3.83 | 1.269 | 34.5 |
| 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... |
| 9/06/25 | Tigers Starter Jack Flaherty Under Immense Pressure To Perform Down the Stretch. As the Detroit Tigers continue to run away with the American League Central, the focus will soon shift to October. It has been a fantastic overall season for the Tigers in 2025. Over the weekend, the team will be playing a series against the Chicago White Sox. Furthermore, a big area of concern for the team is going to be their starting rotation after their ace. Source: https://www.si.com/mlb/tigers/news/tigers-starter-... |
| 9/04/25 | Jack Flaherty, Tigers aim to start series well vs. White Sox. Detroit Tigers right-hander Jack Flaherty took his team on a roller coaster ride during his six starts in August. The Tigers are hoping they will get the better version of Flaherty in the opener of a weekend series against the visiting Chicago White Sox on Friday. In three of his starts last month, Flaherty gave up one run or none. Flaherty was pounded for eight runs and 10 hits in five-plus innings against Kansas City on July 24. Source: https://www.reuters.com/sports/baseball/jack-flahe... |
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