| Name | W | L | SV | ERA | G | GS | IP | HA | R | ER | HR | BB | K | WHIP | OAVG | BABIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Boone Logan RP | 0 | 0 | 0 | 0.00 | 1 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 2 | 0.00 | .000 | .000 | 0.1 |
| Josh Knight RP | 2 | 0 | 0 | 1.46 | 7 | 0 | 12.1 | 7 | 2 | 2 | 1 | 2 | 18 | 0.73 | .167 | .261 | 0.3 |
| Jeff Samardzija RP | 2 | 0 | 0 | 1.48 | 3 | 3 | 24.1 | 15 | 4 | 4 | 1 | 9 | 15 | 0.99 | .188 | .215 | 0.2 |
| Julio Teheran RP | 6 | 0 | 2 | 1.82 | 35 | 3 | 74.0 | 54 | 16 | 15 | 3 | 31 | 92 | 1.15 | .204 | .298 | 1.5 |
| Josh Smoker RP | 10 | 4 | 0 | 2.19 | 25 | 25 | 135.1 | 84 | 37 | 33 | 6 | 40 | 204 | 0.92 | .174 | .286 | 4.5 |
| Dane Dunning RP | 4 | 1 | 2 | 2.37 | 28 | 2 | 57.0 | 37 | 15 | 15 | 7 | 17 | 52 | 0.95 | .187 | .211 | 0.1 |
| Brian Glowicki RP | 0 | 0 | 0 | 2.45 | 3 | 0 | 3.2 | 5 | 1 | 1 | 0 | 2 | 2 | 1.91 | .313 | .357 | -0.0 |
| Dan Jennings CL | 2 | 2 | 28 | 2.51 | 43 | 0 | 46.2 | 36 | 13 | 13 | 4 | 9 | 62 | 0.96 | .212 | .305 | 0.9 |
| Troy Rallings RP | 3 | 6 | 12 | 2.57 | 59 | 0 | 56.0 | 45 | 16 | 16 | 1 | 19 | 73 | 1.14 | .216 | .328 | 1.2 |
| Andri Rondon RP | 0 | 1 | 3 | 2.74 | 14 | 0 | 23.0 | 20 | 8 | 7 | 2 | 4 | 22 | 1.04 | .233 | .290 | 0.1 |
| Rich Perillo SP | 5 | 5 | 3 | 2.85 | 57 | 5 | 91.2 | 60 | 31 | 29 | 3 | 40 | 141 | 1.09 | .183 | .310 | 2.4 |
| Tony Sipp RP | 1 | 2 | 0 | 2.93 | 14 | 0 | 15.1 | 12 | 6 | 5 | 1 | 3 | 20 | 0.98 | .203 | .289 | 0.3 |
| Daulton Jefferies SP | 3 | 0 | 0 | 2.97 | 24 | 0 | 39.1 | 30 | 14 | 13 | 0 | 21 | 56 | 1.30 | .207 | .330 | 0.9 |
| Thomas Hatch SP | 13 | 5 | 0 | 3.06 | 33 | 20 | 132.1 | 100 | 48 | 45 | 9 | 36 | 148 | 1.03 | .208 | .278 | 2.6 |
| Alex Colome SP | 9 | 3 | 0 | 3.11 | 20 | 20 | 121.2 | 113 | 44 | 42 | 8 | 31 | 96 | 1.18 | .240 | .285 | 1.6 |
| Mike Tomas RP | 0 | 0 | 0 | 3.48 | 6 | 0 | 10.1 | 12 | 5 | 4 | 1 | 2 | 7 | 1.35 | .308 | .344 | -0.0 |
| Homer Bailey RP | 9 | 6 | 0 | 3.66 | 21 | 21 | 128.0 | 134 | 56 | 52 | 10 | 32 | 117 | 1.30 | .268 | .330 | 1.9 |
| Adys Portillo RP | 9 | 11 | 0 | 4.48 | 24 | 24 | 142.2 | 146 | 73 | 71 | 21 | 35 | 153 | 1.27 | .265 | .331 | 0.8 |
| Jimmy Nelson RP | 3 | 11 | 1 | 4.53 | 25 | 16 | 109.1 | 115 | 60 | 55 | 3 | 39 | 109 | 1.41 | .270 | .353 | 2.3 |
| Addison Reed RP | 0 | 1 | 1 | 4.97 | 6 | 1 | 12.2 | 13 | 8 | 7 | 1 | 8 | 9 | 1.66 | .265 | .308 | -0.1 |
| Kevin Alexander RP | 0 | 0 | 0 | 5.40 | 1 | 0 | 1.2 | 4 | 1 | 1 | 1 | 0 | 3 | 2.40 | .444 | .600 | -0.1 |
| J.R. Holloway SP | 2 | 3 | 2 | 5.91 | 28 | 4 | 56.1 | 76 | 42 | 37 | 4 | 13 | 76 | 1.58 | .313 | .434 | 1.4 |
