Rafael Soriano had an ERA of 2.89 for the Mariners when pitching at least 150 innings in his career.
| NAME | ERA | IP | G | W | L | W% | GS | SO | CG | SHO | SV | 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 |  | R. Soriano | 2.89 | 171.0 | 116 | 4 | 8 | .333 | 8 | 177 | 0 | 0 | 4 | 134 | 55 | 57 | 16 | 53 | 6 | 31 | 2 | 697 | 4 | 9.32 | 2.79 | 3.34 | 0.84 | 25.4 | 7.6 | 1.09 | .265 | 3.00 | 68 | 3.23 | 74 | 7.05 | 21.8 |
| 2 |  | E. DÃaz | 2.64 | 191.0 | 188 | 4 | 14 | .222 | 0 | 301 | 0 | 0 | 109 | 130 | 56 | 61 | 20 | 64 | 12 | 140 | 4 | 775 | 12 | 14.18 | 3.02 | 4.70 | 0.94 | 38.8 | 8.3 | 1.02 | .291 | 2.87 | 64 | 2.55 | 60 | 6.13 | 35.7 |
| 3 | | P. Sewald | 2.88 | 171.2 | 172 | 18 | 8 | .692 | 0 | 236 | 0 | 0 | 51 | 104 | 55 | 60 | 25 | 55 | 4 | 86 | 10 | 675 | 4 | 12.37 | 2.88 | 4.29 | 1.31 | 35.0 | 8.1 | 0.93 | .223 | 3.15 | 73 | 3.34 | 84 | 5.45 | 13.1 |
| 4 |  | A. Muñoz | 2.24 | 221.0 | 225 | 11 | 20 | .355 | 0 | 301 | 0 | 0 | 67 | 138 | 55 | 67 | 15 | 88 | 14 | 107 | 12 | 884 | 17 | 12.26 | 3.58 | 3.42 | 0.61 | 34.0 | 10.0 | 1.02 | .264 | 2.73 | 58 | 2.70 | 68 | 5.62 | 31.6 |
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