Mark Leiter Jr. is 5-4 with an ERA of 4.44, 72 strikeouts and 2 saves in 52 appearances for the Yankees in his career.
| 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. | 2024 |  NYY | 21 | 2 | 1 | .667 | 0 | 4.98 | 33 | 0 | 0 | 0 | 21.2 | 28 | 12 | 14 | 6 | 9 | 2 | 4 | 1 | 104 | 3 | 13.71 | 3.74 | 3.67 | 2.49 | 31.7 | 8.7 | 1.71 | .407 | 5.82 | 124 | 5.24 | 124 | 11.63 | -2.4 |
| 2 | | M. Leiter Jr. | 2025 | NYY | 31 | 3 | 3 | .500 | 0 | 4.00 | 39 | 0 | 0 | 2 | 27.0 | 30 | 12 | 14 | 3 | 8 | 1 | 4 | 0 | 119 | 3 | 13.00 | 2.67 | 4.88 | 1.00 | 32.8 | 6.7 | 1.41 | .397 | 4.67 | 100 | 2.62 | 63 | 10.00 | 4.6 |
| Total | 52 | 5 | 4 | .556 | 0 | 4.44 | 72 | 0 | 0 | 2 | 48.2 | 58 | 24 | 28 | 9 | 17 | 3 | 8 | 1 | 223 | 6 | 13.32 | 3.14 | 4.24 | 1.66 | 32.3 | 7.6 | 1.54 | .402 | 5.18 | 111 | 3.79 | 90 | 10.73 | 2.2 |
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