| SP | Arrieta, J.Arrieta, Jake >> | 32 | 2017 | R | 77 | 35 | 35 | 11 | 13 | 4.30 | .316 | 1.35 | 9.0 | 3.1 | 8.0 | 198.2 | 199 | 99 | 95 | 26 | 69 | 177 | 0 | 0 | 0 | 0 | 16 | 7 | 15 | 4.07 |
| SP | Hendricks, K.Hendricks, Kyle >> | 28 | 2017 | R | 68 | 35 | 35 | 14 | 13 | 3.70 | .307 | 1.29 | 8.9 | 2.7 | 8.4 | 209.0 | 206 | 93 | 86 | 23 | 63 | 195 | 0 | 0 | 0 | 0 | 22 | 9 | 0 | 3.60 |
| SP | Quintana, J.Quintana, Jose # >> | 29 | 2017 | L | 84 | 34 | 34 | 9 | 9 | 4.09 | .309 | 1.29 | 8.8 | 2.9 | 10.3 | 204.2 | 200 | 96 | 93 | 26 | 65 | 233 | 0 | 0 | 0 | 0 | 15 | 10 | 8 | 3.48 |
| SP | Lackey, J.Lackey, John # >> | 40 | 2017 | R | 49 | 33 | 33 | 10 | 11 | 5.49 | .354 | 1.61 | 10.2 | 4.3 | 7.2 | 173.2 | 196 | 111 | 106 | 26 | 83 | 138 | 0 | 0 | 0 | 0 | 12 | 7 | 5 | 4.92 |
| SP | Lester, J.Lester, Jon >> | 34 | 2017 | L | 45 | 32 | 31 | 10 | 11 | 4.57 | .304 | 1.30 | 9.0 | 2.7 | 10.6 | 183.0 | 182 | 97 | 93 | 25 | 55 | 215 | 0 | 0 | 0 | 0 | 14 | 3 | 1 | 3.38 |
| RP | Davis, W.Davis, Wade # >> | 32 | 2017 | R | 85 | 95 | 0 | 7 | 4 | 4.47 | .329 | 1.44 | 7.6 | 5.5 | 10.7 | 102.2 | 86 | 56 | 51 | 18 | 62 | 121 | 0 | 0 | 4 | 0 | 0 | 3 | 11 | 4.83 |
| RP | Strop, P.Strop, Pedro >> | 33 | 2017 | R | 75 | 102 | 0 | 3 | 4 | 3.51 | .337 | 1.53 | 8.3 | 5.5 | 10.4 | 92.1 | 85 | 48 | 36 | 6 | 56 | 106 | 0 | 2 | 5 | 0 | 0 | 0 | 11 | 3.37 |
| RP | Wilson, J.Wilson, Justin >> | 30 | 2017 | L | 87 | 115 | 0 | 3 | 1 | 3.24 | .317 | 1.39 | 7.2 | 5.4 | 10.9 | 77.2 | 62 | 32 | 28 | 6 | 46 | 93 | 0 | 2 | 1 | 0 | 0 | 0 | 4 | 3.39 |
| RP | Uehara, K.Uehara, Koji >> | 43 | 2017 | R | 56 | 82 | 0 | 5 | 3 | 3.67 | .287 | 1.17 | 7.9 | 2.6 | 9.7 | 68.2 | 60 | 30 | 28 | 14 | 20 | 73 | 0 | 2 | 4 | 0 | 0 | 3 | 0 | 4.54 |
| RP | Montgomery, M.Montgomery, Mike >> | 28 | 2017 | L | 59 | 70 | 0 | 10 | 0 | 2.61 | .262 | 1.03 | 6.2 | 3.2 | 6.9 | 51.2 | 35 | 15 | 15 | 2 | 18 | 39 | 0 | 2 | 2 | 0 | 0 | 2 | 3 | 3.16 |
| RP | Rondon, H.Rondon, Hector >> | 30 | 2017 | R | 73 | 52 | 0 | 3 | 3 | 5.91 | .337 | 1.52 | 9.9 | 4.1 | 10.5 | 42.2 | 46 | 29 | 28 | 7 | 19 | 49 | 0 | 3 | 1 | 0 | 0 | 0 | 3 | 4.19 |
| RP | Grimm, J.Grimm, Justin >> | 29 | 2017 | R | 42 | 40 | 0 | 0 | 0 | 3.79 | .352 | 1.58 | 9.2 | 5.0 | 11.1 | 38.0 | 39 | 17 | 16 | 4 | 21 | 47 | 0 | 4 | 0 | 0 | 0 | 2 | 5 | 3.71 |
| CL | Edwards, C.Edwards, Carl # >> | 26 | 2017 | R | 93 | 65 | 0 | 6 | 5 | 4.41 | .302 | 1.27 | 6.1 | 5.4 | 10.1 | 65.1 | 44 | 33 | 32 | 4 | 39 | 73 | 0 | 38 | 7 | 0 | 0 | 2 | 4 | 3.45 |
| RP | Rosario, R.Rosario, Randy >> | 24 | 2018 | L | 20 | 0 | 0 | 0 | 0 | - | .000 | - | - | - | - | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| SP | Hamels, C.Hamels, Cole >> | 35 | 2018 | L | 67 | 0 | 0 | 0 | 0 | - | .000 | - | - | - | - | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| SP | Darvish, Y.Darvish, Yu >> | 31 | 2018 | R | 50 | 0 | 0 | 0 | 0 | - | .000 | - | - | - | - | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| RP | Morrow, B.Morrow, Brandon >> | 34 | 2018 | R | 77 | 0 | 0 | 0 | 0 | - | .000 | - | - | - | - | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| RP | Farrell, L.Farrell, Luke >> | 27 | 2018 | R | 33 | 0 | 0 | 0 | 0 | - | .000 | - | - | - | - | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |