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Mark Leiter played 6 major-league seasons (2017-2025) as a P (270). Career totals and every year-by-year line below come from the SABR/Lahman database (CC BY-SA), covering 1871-2025.
Showing 2 season lines
| Year | Age | Team | G | AB | R | H | HR | RBI | SB | BB | SO | AVG | OPS | OPS+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | 26 | PHI | 27 | 25 | 0 | 2 | 0 | 0 | 0 | 0 | 12 | .080 | .160 | -56 |
| 2018 | 27 | PHI | 12 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | .000 | .000 | -100 |
| Year | Age | Team | G | GS | W | L | SV | IP | SO | BB | ERA | ERA+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | 26 | PHI | 27 | 11 | 3 | 6 | 0 | 90.2 | 84 | 31 | 4.96 | 87 |
| 2018 | 27 | TOR | 8 | 0 | 0 | 0 | 0 | 6.2 | 9 | 4 | 13.50 | 32 |
| 2018 | 27 | PHI | 12 | 0 | 0 | 1 | 0 | 16.2 | 13 | 8 | 5.40 | 75 |
| 2022 | 31 | CHN | 35 | 4 | 2 | 7 | 3 | 67.2 | 73 | 25 | 3.99 | 101 |
| 2023 | 32 | CHN | 69 | 0 | 1 | 3 | 4 | 64.1 | 77 | 24 | 3.50 | 125 |
| 2024 | 33 | NYA | 21 | 0 | 2 | 1 | 0 | 21.2 | 33 | 9 | 4.98 | 81 |
| 2024 | 33 | CHN | 39 | 0 | 2 | 4 | 0 | 36.1 | 53 | 13 | 4.21 | 98 |
| 2025 | 34 | NYA | 59 | 0 | 6 | 7 | 2 | 48.1 | 54 | 17 | 4.84 | 85 |
| Year | Pos | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|---|
| 2017 | P | 27 | 11 | 10 | 8 | 0 | 0 |
| 2018 | P | 20 | 0 | 2 | 2 | 0 | 0 |
| 2022 | P | 35 | 4 | 2 | 9 | 0 | 2 |
| 2023 | P | 69 | 0 | 5 | 3 | 0 | 0 |
| 2024 | P | 60 | 0 | 1 | 4 | 1 | 0 |
| 2025 | P | 59 | 0 | 2 | 2 | 1 | 0 |
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.
Mark Leiter is a playable Legends Deck card, rated from real Statcast data and refreshed nightly: view the Mark Leiter card.
| Date | Type | From | To | Details |
|---|---|---|---|---|
| Dec 17, 2025 | Signed as free agent | — | Athletics | Athletics signed free agent RHP Mark Leiter Jr.. |
| Jan 30, 2023 | Signed as free agent | — | Chicago Cubs | Chicago Cubs signed free agent RHP Mark Leiter Jr. to a minor league contract. |
| Dec 15, 2021 | Signed as free agent | — | Chicago Cubs | Chicago Cubs signed free agent RHP Mark Leiter Jr. to a minor league contract. |
| Mar 18, 2021 | Signed as free agent | — | Detroit Tigers | Detroit Tigers signed free agent P Mark Leiter Jr.. |
| Feb 7, 2020 | Signed as free agent | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Mark Leiter Jr. to a minor league contract. |
| Jun 14, 2013 | Signed | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Mark Leiter. |
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.