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| Name | W | L | SV | ERA | G | GS | IP | HA | R | ER | HR | BB | K | WHIP | OAVG | BABIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fernando Cuestas CL | 3 | 4 | 12 | 1.99 | 31 | 0 | 49.2 | 38 | 12 | 11 | 1 | 13 | 52 | 1.03 | .207 | .278 | 1.9 |
| Salvador Luna SP | 17 | 6 | 1 | 2.71 | 32 | 31 | 249.1 | 262 | 81 | 75 | 2 | 62 | 169 | 1.30 | .272 | .324 | 7.5 |
| Octavio Cervantes SP | 14 | 15 | 0 | 3.41 | 33 | 33 | 266.2 | 276 | 112 | 101 | 9 | 91 | 164 | 1.38 | .273 | .315 | 5.1 |
| Pedro Marrón SP | 13 | 10 | 0 | 3.45 | 32 | 31 | 237.1 | 239 | 106 | 91 | 13 | 76 | 142 | 1.33 | .266 | .301 | 3.6 |
| Bill Hopke SP | 16 | 16 | 0 | 3.58 | 35 | 33 | 271.2 | 260 | 117 | 108 | 20 | 58 | 176 | 1.17 | .252 | .285 | 4.7 |
| Julio Quiñones RP | 1 | 1 | 0 | 3.86 | 9 | 0 | 23.1 | 22 | 10 | 10 | 1 | 11 | 15 | 1.41 | .244 | .284 | 0.1 |
| Cándido Fontanals RP | 1 | 4 | 0 | 4.94 | 17 | 0 | 31.0 | 44 | 17 | 17 | 1 | 11 | 22 | 1.77 | .333 | .387 | 0.4 |
| Miguel Prats RP | 5 | 6 | 2 | 5.14 | 21 | 4 | 61.1 | 79 | 37 | 35 | 7 | 19 | 38 | 1.60 | .324 | .358 | 0.1 |
