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Jack Flaherty played 9 major-league seasons (2017-2025) as a P (190). Career totals and every year-by-year line below come from the SABR/Lahman database (CC BY-SA), covering 1871-2025.
Showing 4 season lines
| Year | Age | Team | G | AB | R | H | HR | RBI | SB | BB | SO | AVG | OPS | OPS+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | 22 | SLN | 6 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | .000 | .000 | -100 |
| 2018 | 23 | SLN | 31 | 46 | 2 | 7 | 0 | 0 | 0 | 2 | 20 | .152 | .340 | -3 |
| 2019 | 24 | SLN | 38 | 54 | 4 | 10 | 0 | 4 | 1 | 2 | 17 | .185 | .451 | 21 |
| 2021 | 26 | SLN | 17 | 17 | 2 | 2 | 1 | 3 | 0 | 5 | 7 | .118 | .598 | 68 |
| Year | Age | Team | G | GS | W | L | SV | IP | SO | BB | ERA | ERA+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | 22 | SLN | 6 | 5 | 0 | 2 | 0 | 21.1 | 20 | 10 | 6.33 | 69 |
| 2018 | 23 | SLN | 28 | 28 | 8 | 9 | 0 | 151 | 182 | 59 | 3.34 | 121 |
| 2019 | 24 | SLN | 33 | 33 | 11 | 8 | 0 | 196.1 | 231 | 55 | 2.75 | 159 |
| 2020 | 25 | SLN | 9 | 9 | 4 | 3 | 0 | 40.1 | 49 | 16 | 4.91 | 91 |
| 2021 | 26 | SLN | 17 | 15 | 9 | 2 | 0 | 78.1 | 85 | 26 | 3.22 | 130 |
| 2022 | 27 | SLN | 9 | 8 | 2 | 1 | 0 | 36 | 33 | 22 | 4.25 | 95 |
| 2023 | 28 | BAL | 9 | 7 | 1 | 3 | 0 | 34.2 | 42 | 12 | 6.75 | 63 |
| 2023 | 28 | SLN | 20 | 20 | 7 | 6 | 0 | 109.2 | 106 | 54 | 4.43 | 99 |
| 2024 | 29 | DET | 18 | 18 | 7 | 5 | 0 | 106.2 | 133 | 19 | 2.95 | 136 |
| 2024 | 29 | LAN | 10 | 10 | 6 | 2 | 0 | 55.1 | 61 | 19 | 3.58 | 116 |
| 2025 | 30 | DET | 31 | 31 | 8 | 15 | 0 | 161 | 188 | 59 | 4.64 | 88 |
| Year | Pos | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|---|
| 2017 | P | 6 | 5 | 1 | 3 | 0 | 0 |
| 2018 | P | 28 | 28 | 7 | 11 | 2 | 0 |
| 2019 | P | 33 | 33 | 18 | 23 | 0 | 4 |
| 2020 | P | 9 | 9 | 1 | 4 | 0 | 0 |
| 2021 | P | 17 | 15 | 7 | 6 | 1 | 0 |
| 2022 | P | 9 | 8 | 3 | 3 | 2 | 0 |
| 2023 | P | 29 | 27 | 18 | 14 | 0 | 3 |
| 2024 | P | 28 | 28 | 10 | 9 | 0 | 0 |
| 2025 | P | 31 | 31 | 15 | 14 | 0 | 1 |
Team codes are the source codes (e.g. NYN for the New York Mets, BS1 for the 1875 Boston club). OPS+ is league-season normalized, not park-adjusted; unrecorded source values (such as RBI in the earliest recorded seasons) are absent, never zero-filled.
MVP, Cy Young and Rookie of the Year voting history (3 ballot finishes, 0 wins). Full year pages: 2019, 2018.
| Year | Award | Lg | Rank | Points | First-place votes |
|---|---|---|---|---|---|
| 2018 | Rookie of the Year | NL | 5 | 2 / 150 | 0 |
| 2019 | Cy Young Award | NL | 4 | 69 / 210 | 0 |
| 2019 | Most Valuable Player | NL | 13 | 9 / 420 | 0 |
Jack Flaherty is a playable Legends Deck card, rated from real Statcast data and refreshed nightly: view the Jack Flaherty card.
Jack Flaherty appears in 4 archived official MLB transactions (1 trade), newest first.
| Date | Type | From | To | Details |
|---|---|---|---|---|
| Feb 7, 2025 | Signed as free agent | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jack Flaherty. |
| Dec 20, 2023 | Signed as free agent | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jack Flaherty. |
| Aug 1, 2023 | Trade | St. Louis Cardinals | Baltimore Orioles | St. Louis Cardinals traded RHP Jack Flaherty to Baltimore Orioles for 2B César Prieto, LHP Drew Rom and RHP Zack Showalter. |
| Jun 19, 2014 | Signed | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Jack Flaherty. |
From MLB’s official StatsAPI transactions feed (2011 to the current season, trades/signings/releases involving major-league clubs). Browse the full archive.
Every career total and season line is computed from the SABR / Sean Lahman baseball database (2025 edition, CC BY-SA 3.0), the same source behind our historical position leaderboards. Rate stats use league-season normalization only (OPS+ and ERA+ as marked, never park-adjusted); unrecorded early-era values stay absent rather than being invented. Career totals sum only what the source records.
Award winners and MVP / Cy Young / Rookie of the Year voting history come from the same database; the year pages live under MLB award voting history. Official transactions (2011 to the current season) come from the MLB StatsAPI feed on our transactions archive.