| SP | Cueto, J.Cueto, Johnny >> | 29 | 2015 | R | 72 | 36 | 36 | 11 | 18 | 3.52 | .272 | 1.10 | 7.5 | 2.4 | 7.0 | 256.0 | 214 | 105 | 100 | 30 | 68 | 198 | 3 | 0 | 0 | 2 | 26 | 5 | 0 | 3.83 |
| SP | Medlen, K.Medlen, Kris >> | 29 | 2015 | R | 41 | 36 | 36 | 3 | 19 | 4.13 | .310 | 1.33 | 9.6 | 2.4 | 7.5 | 154.2 | 165 | 73 | 71 | 19 | 41 | 128 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 3.78 |
| SP | Ventura, Y.Ventura, Yordano >> | 24 | 2015 | R | 44 | 34 | 34 | 13 | 13 | 3.31 | .294 | 1.21 | 7.3 | 3.7 | 7.1 | 209.2 | 169 | 79 | 77 | 22 | 85 | 165 | 1 | 0 | 0 | 0 | 17 | 8 | 10 | 4.12 |
| SP | Volquez, E.Volquez, Edinson >> | 32 | 2015 | R | 39 | 32 | 31 | 14 | 10 | 3.73 | .289 | 1.20 | 8.2 | 2.6 | 6.7 | 198.0 | 181 | 83 | 82 | 26 | 57 | 147 | 0 | 0 | 0 | 0 | 20 | 4 | 0 | 4.15 |
| SP | Vargas, J.Vargas, Jason >> | 32 | 2015 | L | 20 | 26 | 25 | 6 | 10 | 4.14 | .307 | 1.32 | 9.5 | 2.5 | 6.1 | 134.2 | 141 | 66 | 62 | 18 | 37 | 91 | 0 | 0 | 0 | 0 | 7 | 1 | 0 | 4.24 |
| RP | Madson, R.Madson, Ryan >> | 35 | 2015 | R | 85 | 112 | 0 | 1 | 4 | 1.41 | .226 | 0.86 | 5.6 | 2.2 | 7.5 | 108.2 | 67 | 17 | 17 | 3 | 26 | 90 | 0 | 2 | 2 | 0 | 0 | 2 | 0 | 2.47 |
| RP | Blanton, J.Blanton, Joe >> | 35 | 2015 | R | 63 | 89 | 0 | 0 | 3 | 3.20 | .271 | 1.09 | 7.1 | 2.8 | 7.6 | 84.1 | 66 | 35 | 30 | 11 | 26 | 71 | 0 | 3 | 4 | 0 | 0 | 2 | 0 | 4.01 |
| RP | Herrera, K.Herrera, Kelvin >> | 25 | 2015 | R | 70 | 47 | 0 | 5 | 3 | 0.94 | .235 | 0.92 | 5.7 | 2.7 | 5.0 | 47.2 | 30 | 7 | 5 | 4 | 14 | 26 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 3.89 |
| RP | Morales, F.Morales, Franklin >> | 29 | 2015 | L | 53 | 111 | 0 | 1 | 1 | 3.14 | .284 | 1.17 | 8.3 | 2.3 | 7.9 | 63.0 | 58 | 24 | 22 | 5 | 16 | 55 | 0 | 1 | 0 | 0 | 0 | 1 | 2 | 3.10 |
| RP | Finnegan, B.Finnegan, Brandon >> | 22 | 2015 | L | 62 | 71 | 0 | 3 | 2 | 2.18 | .276 | 1.11 | 6.8 | 3.3 | 5.8 | 57.2 | 43 | 17 | 14 | 6 | 21 | 37 | 0 | 3 | 2 | 0 | 0 | 2 | 0 | 4.28 |