Mark Leiter Jr. with an ERA of 3.65 and 13 strikeouts in 8 appearances against the Mariners in his career.
| NAME | DATE | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | M. Leiter Jr. | 5/9/2017 |  PHI | vs |  SEA | 0 | 6.75 | 1 | 0 | 0 | 0 | 1.1 | 1 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | 6 | 0 | |
| 2 | | M. Leiter Jr. | 6/28/2017 | PHI | @ | SEA | 1 | 7.20 | 6 | 0 | 0 | 0 | 5.0 | 9 | 4 | 4 | 3 | 0 | 0 | 0 | 0 | 24 | 0 | |
| 3 | | M. Leiter Jr. | 4/10/2023 |  CHC | vs | SEA | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | |
| 4 | | M. Leiter Jr. | 4/11/2023 | CHC | vs | SEA | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | |
| 5 | | M. Leiter Jr. | 4/13/2024 | CHC | @ | SEA | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | |
| 6 | | M. Leiter Jr. | 4/14/2024 | CHC | @ | SEA | 0 | 0.00 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | |
| 7 | | M. Leiter Jr. | 5/12/2025 |  NYY | @ | SEA | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | |
| 8 | | M. Leiter Jr. | 5/13/2025 | NYY | @ | SEA | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | |
| Total | 1 | 3.65 | 13 | 0 | 0 | 0 | 12.1 | 13 | 5 | 6 | 3 | 1 | 0 | 0 | 0 | 50 | 0 |
Some of the information used here was obtained free of charge from Retrosheet.
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