Trent Thornton has a 6-5 record with an ERA of 3.76, 116 strikeouts and 1 save in 115 appearances for the Mariners 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 |  | T. Thornton | 2023 |  SEA | 23 | 1 | 2 | .333 | 1 | 2.08 | 21 | 0 | 0 | 0 | 26.0 | 23 | 6 | 11 | 5 | 5 | 0 | 6 | 0 | 103 | 0 | 7.27 | 1.73 | 4.20 | 1.73 | 20.4 | 4.9 | 1.08 | .250 | 3.81 | 52 | 4.71 | 115 | 7.96 | -1.9 |
| 2 | | T. Thornton | 2024 | SEA | 71 | 4 | 3 | .571 | 0 | 3.61 | 77 | 0 | 0 | 1 | 72.1 | 63 | 29 | 32 | 8 | 19 | 5 | 16 | 1 | 294 | 4 | 9.58 | 2.36 | 4.05 | 1.00 | 26.2 | 6.5 | 1.13 | .297 | 3.98 | 96 | 3.46 | 88 | 7.84 | 3.7 |
| 3 | | T. Thornton | 2025 | SEA | 21 | 1 | 0 | 1.000 | 0 | 6.08 | 18 | 0 | 0 | 0 | 23.2 | 24 | 16 | 16 | 6 | 10 | 3 | 3 | 0 | 105 | 1 | 6.85 | 3.80 | 1.80 | 2.28 | 17.1 | 9.5 | 1.44 | .265 | 6.08 | 162 | 6.49 | 167 | 9.13 | -7.1 |
| Total | 115 | 6 | 5 | .545 | 1 | 3.76 | 116 | 0 | 0 | 1 | 122.0 | 110 | 51 | 59 | 19 | 34 | 8 | 25 | 1 | 502 | 5 | 8.56 | 2.51 | 3.41 | 1.40 | 23.1 | 6.8 | 1.18 | .280 | 4.35 | 99 | 4.32 | 109 | 8.11 | -5.3 |
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