Mark Leiter Jr. has played 6 seasons for 4 teams, including the Yankees and Cubs. He has 12 wins, 24 losses, an ERA of 4.48 and 362 strikeouts.
| NAME | SEASON | TM | G | W | L | W% | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | M. Leiter Jr. | 2017 |  PHI | 27 | 3 | 6 | .333 | 11 | 4.96 | 84 | 0 | 0 | 0 | 90.2 | 90 | 50 | 59 | 18 | 31 | 7 | 5 | 2 | 395 | 3 | 8.34 | 3.08 | 2.71 | 1.79 | 21.3 | 7.8 | 1.33 | .282 | 5.86 | 114 | 5.14 | 117 | 8.93 | -7.2 |
| 2 |  | M. Leiter Jr. | 2018 | TOT | 20 | 0 | 1 | .000 | 0 | 7.71 | 22 | 0 | 0 | 0 | 23.1 | 35 | 20 | 28 | 7 | 12 | 2 | 4 | 3 | 123 | 2 | 8.49 | 4.63 | 1.83 | 2.70 | 17.9 | 9.8 | 2.01 | .350 | 10.80 | 185 | 6.97 | 166 | 13.50 | -7 |
| 3 |  | M. Leiter Jr. | 2022 |  CHC | 35 | 2 | 7 | .222 | 4 | 3.99 | 73 | 0 | 0 | 3 | 67.2 | 52 | 30 | 32 | 10 | 25 | 7 | 11 | 2 | 282 | 5 | 9.71 | 3.33 | 2.92 | 1.33 | 25.9 | 8.9 | 1.14 | .251 | 4.26 | 100 | 4.29 | 109 | 6.92 | -2.6 |
| 4 | | M. Leiter Jr. | 2023 | CHC | 69 | 1 | 3 | .250 | 0 | 3.50 | 77 | 0 | 0 | 4 | 64.1 | 48 | 25 | 27 | 7 | 24 | 8 | 12 | 0 | 269 | 2 | 10.77 | 3.36 | 3.21 | 0.98 | 28.6 | 8.9 | 1.12 | .268 | 3.78 | 82 | 3.76 | 88 | 6.72 | 3.8 |
| 5 | | M. Leiter Jr. | 2024 | TOT | 60 | 4 | 5 | .444 | 0 | 4.50 | 86 | 0 | 0 | 0 | 58.0 | 55 | 29 | 34 | 8 | 22 | 3 | 7 | 1 | 256 | 5 | 13.34 | 3.41 | 3.91 | 1.24 | 33.6 | 8.6 | 1.33 | .343 | 5.28 | 112 | 3.28 | 80 | 8.53 | 5.3 |
| 6 |  | M. Leiter Jr. | 2025 |  NYY | 15 | 2 | 2 | .500 | 0 | 2.70 | 20 | 0 | 0 | 1 | 13.1 | 10 | 4 | 5 | 1 | 4 | 1 | 3 | 0 | 53 | 1 | 13.50 | 2.70 | 5.00 | 0.68 | 37.7 | 7.5 | 1.05 | .333 | 3.38 | 69 | 2.17 | 52 | 6.75 | 2.9 |
| Total | 226 | 12 | 24 | .333 | 15 | 4.48 | 362 | 0 | 0 | 8 | 317.1 | 290 | 158 | 185 | 51 | 118 | 28 | 42 | 8 | 1,378 | 18 | 10.27 | 3.35 | 3.07 | 1.45 | 26.3 | 8.6 | 1.29 | .292 | 5.25 | 108 | 4.35 | 103 | 8.22 | -4.8 |
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