Erik Swanson has played 6 seasons for the Mariners and Blue Jays. He has 10 wins, 16 losses, an ERA of 3.97 and 278 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 |  | E. Swanson | 2019 |  SEA | 27 | 1 | 5 | .167 | 8 | 5.74 | 52 | 0 | 0 | 2 | 58.0 | 56 | 37 | 41 | 17 | 12 | 2 | 7 | 1 | 245 | 2 | 8.07 | 1.86 | 4.33 | 2.64 | 21.2 | 4.9 | 1.17 | .241 | 6.36 | 130 | 5.94 | 133 | 8.69 | -9.7 |
| 2 | | E. Swanson | 2020 | SEA | 9 | 0 | 2 | .000 | 0 | 12.91 | 9 | 0 | 0 | 0 | 7.2 | 11 | 11 | 12 | 3 | 2 | 2 | 2 | 0 | 37 | 1 | 10.57 | 2.35 | 4.50 | 3.52 | 24.3 | 5.4 | 1.70 | .381 | 14.09 | 307 | 7.49 | 174 | 12.91 | -2.8 |
| 3 | | E. Swanson | 2021 | SEA | 33 | 0 | 3 | .000 | 2 | 3.31 | 35 | 0 | 0 | 1 | 35.1 | 28 | 13 | 18 | 5 | 10 | 1 | 5 | 1 | 144 | 0 | 8.92 | 2.55 | 3.50 | 1.27 | 24.3 | 6.9 | 1.08 | .247 | 4.58 | 80 | 3.95 | 95 | 7.13 | 0.7 |
| 4 | | E. Swanson | 2022 | SEA | 57 | 3 | 2 | .600 | 1 | 1.68 | 70 | 0 | 0 | 3 | 53.2 | 39 | 10 | 11 | 3 | 10 | 1 | 9 | 1 | 206 | 1 | 11.74 | 1.68 | 7.00 | 0.50 | 34.0 | 4.9 | 0.91 | .295 | 1.84 | 45 | 1.84 | 48 | 6.54 | 12.1 |
| 5 |  | E. Swanson | 2023 |  TOR | 69 | 4 | 2 | .667 | 0 | 2.97 | 75 | 0 | 0 | 4 | 66.2 | 52 | 22 | 22 | 8 | 21 | 0 | 13 | 0 | 262 | 0 | 10.13 | 2.84 | 3.57 | 1.08 | 28.6 | 8.0 | 1.10 | .278 | 2.97 | 70 | 3.51 | 82 | 7.02 | 5.7 |
| 6 | | E. Swanson | 2024 | TOR | 45 | 2 | 2 | .500 | 0 | 5.03 | 37 | 0 | 0 | 0 | 39.1 | 36 | 22 | 22 | 11 | 14 | 1 | 15 | 0 | 168 | 0 | 8.47 | 3.20 | 2.64 | 2.52 | 22.0 | 8.3 | 1.27 | .238 | 5.03 | 127 | 6.06 | 148 | 8.24 | -8.6 |
| Total | 240 | 10 | 16 | .385 | 11 | 3.97 | 278 | 0 | 0 | 10 | 260.2 | 222 | 115 | 126 | 47 | 69 | 7 | 51 | 3 | 1,062 | 4 | 9.60 | 2.38 | 4.03 | 1.62 | 26.2 | 6.5 | 1.12 | .265 | 4.35 | 95 | 4.27 | 101 | 7.66 | -2.6 |
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