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| Name | W | L | SV | ERA | G | GS | IP | HA | R | ER | HR | BB | K | WHIP | OAVG | BABIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rube Waddell SP | 20 | 8 | 0 | 2.75 | 31 | 31 | 258.1 | 215 | 87 | 79 | 12 | 88 | 261 | 1.17 | .223 | .292 | 7.4 |
| Sonny Gray RP | 1 | 0 | 0 | 3.00 | 10 | 1 | 30.0 | 29 | 10 | 10 | 2 | 11 | 31 | 1.33 | .259 | .338 | 0.6 |
| Lefty Grove SP | 17 | 5 | 0 | 3.17 | 30 | 30 | 241.0 | 224 | 92 | 85 | 17 | 43 | 227 | 1.11 | .243 | .303 | 7.5 |
| Jack Banta SP | 1 | 0 | 0 | 3.26 | 18 | 0 | 38.2 | 29 | 17 | 14 | 3 | 13 | 43 | 1.09 | .201 | .260 | 0.6 |
| Sean Doolittle CL | 7 | 12 | 23 | 3.41 | 61 | 0 | 68.2 | 61 | 30 | 26 | 9 | 16 | 56 | 1.12 | .238 | .271 | 0.7 |
| Harry Krause SP | 16 | 7 | 0 | 3.50 | 31 | 31 | 246.2 | 229 | 106 | 96 | 31 | 72 | 227 | 1.22 | .246 | .291 | 3.1 |
| Tex Carleton RP | 7 | 3 | 4 | 3.83 | 35 | 0 | 42.1 | 39 | 22 | 18 | 3 | 11 | 47 | 1.18 | .244 | .321 | 1.1 |
| Aaron Nola SP | 16 | 7 | 0 | 4.25 | 31 | 31 | 216.0 | 208 | 112 | 102 | 26 | 61 | 206 | 1.25 | .251 | .302 | 3.8 |
| Eustaquio Pedroso SP | 15 | 7 | 0 | 4.33 | 31 | 30 | 212.0 | 217 | 115 | 102 | 22 | 86 | 187 | 1.43 | .265 | .317 | 2.1 |
| Felipe Rivero RP | 2 | 1 | 2 | 4.61 | 13 | 0 | 13.2 | 15 | 7 | 7 | 3 | 8 | 13 | 1.68 | .300 | .353 | -0.4 |
| Kevin Rogers RP | 0 | 2 | 1 | 5.65 | 18 | 0 | 28.2 | 33 | 18 | 18 | 4 | 15 | 21 | 1.67 | .297 | .322 | -0.3 |
