| SP | Syndergaard, N.Syndergaard, Noah >> | 22 | 2015 | R | 93 | 34 | 34 | 8 | 11 | 4.03 | .308 | 1.31 | 9.3 | 2.4 | 10.3 | 210.0 | 218 | 99 | 94 | 31 | 57 | 240 | 2 | 0 | 0 | 1 | 20 | 6 | 4 | 3.53 |
| SP | Hammel, J.Hammel, Jason >> | 33 | 2015 | R | 73 | 33 | 33 | 13 | 13 | 5.07 | .335 | 1.48 | 10.6 | 2.7 | 9.2 | 172.1 | 203 | 99 | 97 | 23 | 52 | 175 | 0 | 0 | 0 | 0 | 13 | 6 | 8 | 3.72 |
| SP | Wacha, M.Wacha, Michael # >> | 23 | 2015 | R | 68 | 32 | 32 | 8 | 13 | 4.26 | .312 | 1.34 | 9.1 | 3.0 | 8.0 | 202.2 | 205 | 101 | 96 | 28 | 67 | 179 | 0 | 0 | 0 | 0 | 16 | 4 | 4 | 4.08 |
| SP | Lackey, J.Lackey, John # >> | 37 | 2015 | R | 59 | 32 | 32 | 13 | 12 | 4.93 | .324 | 1.40 | 10.4 | 2.2 | 6.9 | 201.0 | 232 | 117 | 110 | 29 | 49 | 155 | 2 | 0 | 0 | 0 | 15 | 8 | 3 | 4.18 |
| RP | O'Day, D.O'Day, Darren >> | 33 | 2015 | R | 91 | 103 | 0 | 5 | 3 | 3.90 | .276 | 1.13 | 7.8 | 2.4 | 10.5 | 113.0 | 98 | 50 | 49 | 7 | 30 | 132 | 0 | 12 | 0 | 0 | 0 | 1 | 0 | 2.29 |
| RP | Thornton, M.Thornton, Matt >> | 39 | 2015 | L | 64 | 111 | 0 | 3 | 2 | 2.69 | .263 | 1.00 | 5.9 | 3.1 | 7.0 | 97.0 | 64 | 32 | 29 | 6 | 33 | 75 | 0 | 5 | 2 | 0 | 0 | 7 | 1 | 3.49 |
| RP | Aardsma, D.Aardsma, David >> | 34 | 2015 | R | 43 | 86 | 0 | 3 | 7 | 3.65 | .310 | 1.29 | 6.6 | 5.1 | 9.7 | 98.2 | 72 | 42 | 40 | 9 | 55 | 106 | 0 | 9 | 5 | 0 | 0 | 6 | 3 | 3.90 |
| RP | Hunter, T.Hunter, Tommy >> | 29 | 2015 | R | 29 | 73 | 0 | 6 | 3 | 4.81 | .323 | 1.41 | 10.0 | 2.7 | 7.9 | 82.1 | 91 | 44 | 44 | 12 | 25 | 72 | 0 | 4 | 1 | 0 | 0 | 2 | 3 | 4.13 |
| SP | Volquez, E.Volquez, Edinson >> | 32 | 2015 | R | 40 | 1 | 1 | 0 | 0 | 6.35 | .393 | 1.76 | 14.4 | 3.6 | 9.0 | 5.2 | 8 | 4 | 4 | 0 | 2 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2.80 |
| SP | Chavez, J.Chavez, Jesse >> | 32 | 2015 | R | 31 | 14 | 0 | 3 | 2 | 5.28 | .361 | 1.63 | 12.0 | 3.0 | 6.6 | 15.1 | 20 | 9 | 9 | 3 | 5 | 11 | 0 | 2 | 2 | 0 | 0 | 1 | 1 | 5.33 |
| SP | Ventura, Y.Ventura, Yordano >> | 24 | 2015 | R | 52 | 54 | 1 | 5 | 13 | 5.09 | .349 | 1.60 | 10.8 | 3.6 | 7.1 | 111.1 | 133 | 69 | 63 | 10 | 45 | 87 | 0 | 6 | 3 | 0 | 1 | 1 | 7 | 3.85 |