| Name | W | L | SV | ERA | G | GS | IP | HA | R | ER | HR | BB | K | WHIP | OAVG | BABIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Josh Smoker RP | 0 | 0 | 0 | 0.00 | 3 | 0 | 0.2 | 1 | 0 | 0 | 0 | 0 | 0 | 1.50 | .333 | .333 | 0.0 |
| Alex Colome SP | 0 | 1 | 0 | 1.42 | 2 | 2 | 12.2 | 11 | 3 | 2 | 0 | 3 | 7 | 1.11 | .224 | .256 | 0.3 |
| Drew Smyly SP | 10 | 15 | 0 | 3.07 | 35 | 35 | 226.0 | 199 | 84 | 77 | 18 | 70 | 204 | 1.19 | .236 | .289 | 4.4 |
| Drew VerHagen RP | 2 | 0 | 1 | 3.12 | 13 | 0 | 17.1 | 20 | 6 | 6 | 0 | 7 | 19 | 1.56 | .290 | .400 | 0.4 |
| Felix Hernandez SP | 16 | 13 | 0 | 3.23 | 34 | 34 | 237.0 | 211 | 90 | 85 | 23 | 56 | 181 | 1.13 | .235 | .269 | 3.4 |
| George Kontos RP | 3 | 4 | 6 | 3.52 | 71 | 0 | 61.1 | 58 | 26 | 24 | 5 | 19 | 50 | 1.26 | .251 | .298 | 0.5 |
| Boone Logan RP | 4 | 1 | 0 | 3.89 | 58 | 0 | 34.2 | 27 | 17 | 15 | 6 | 13 | 38 | 1.15 | .214 | .256 | -0.1 |
| Julio Teheran RP | 0 | 0 | 0 | 3.97 | 5 | 0 | 11.1 | 8 | 5 | 5 | 0 | 9 | 11 | 1.50 | .205 | .286 | 0.1 |
| Angelo Aguirre RP | 1 | 2 | 3 | 4.02 | 66 | 0 | 69.1 | 60 | 34 | 31 | 9 | 41 | 89 | 1.46 | .234 | .321 | 0.1 |
| Lance Lynn SP | 11 | 11 | 0 | 4.08 | 32 | 32 | 176.2 | 174 | 83 | 80 | 19 | 69 | 157 | 1.38 | .257 | .308 | 1.8 |
| Homer Bailey RP | 3 | 1 | 0 | 4.15 | 10 | 2 | 21.2 | 20 | 10 | 10 | 3 | 3 | 17 | 1.06 | .247 | .279 | 0.2 |
| Norman Phillips RP | 4 | 5 | 1 | 4.21 | 60 | 0 | 94.0 | 84 | 46 | 44 | 11 | 39 | 114 | 1.31 | .237 | .316 | 0.6 |
| Johnny Cueto SP | 14 | 13 | 0 | 4.36 | 32 | 32 | 200.1 | 236 | 113 | 97 | 19 | 57 | 124 | 1.46 | .292 | .323 | 2.1 |
| Jeff Samardzija RP | 0 | 0 | 0 | 4.57 | 8 | 0 | 21.2 | 24 | 11 | 11 | 5 | 8 | 19 | 1.48 | .289 | .322 | -0.4 |
| Andrew Miller CL | 3 | 4 | 34 | 4.75 | 62 | 0 | 60.2 | 45 | 37 | 32 | 7 | 31 | 98 | 1.25 | .207 | .333 | 0.9 |
| Greg Holland RP | 3 | 1 | 4 | 5.02 | 44 | 0 | 52.0 | 51 | 29 | 29 | 3 | 30 | 60 | 1.56 | .259 | .353 | 0.5 |
| Collin McHugh SP | 6 | 11 | 0 | 5.17 | 25 | 25 | 132.1 | 151 | 85 | 76 | 19 | 34 | 102 | 1.40 | .282 | .315 | 0.8 |
| Dan Jennings CL | 0 | 0 | 0 | 7.11 | 11 | 0 | 12.2 | 12 | 10 | 10 | 1 | 5 | 14 | 1.34 | .250 | .333 | 0.2 |
