| SP | Arrieta, J.Arrieta, Jake >> | 32 | 2017 | R | 77 | 14 | 10 | 3.53 | .285 | .320 | 1.22 | 8.0 | 2.9 | 8.7 | 168 | 150 | 23 | 55 | 163 | 0 | 0 | 14 | 99 | +1.97 | C |
| SP | Hendricks, K.Hendricks, Kyle >> | 28 | 2017 | R | 67 | 7 | 5 | 3.03 | .288 | .330 | 1.24 | 8.4 | 2.8 | 7.7 | 139 | 130 | 17 | 43 | 119 | 0 | 0 | 0 | 101 | +3.68 | C |
| SP | Quintana, J.Quintana, Jose # >> | 29 | 2017 | L | 84 | 11 | 11 | 4.15 | .281 | .320 | 1.19 | 7.9 | 2.8 | 9.9 | 193 | 170 | 23 | 60 | 212 | 1 | 0 | 8 | 109 | +2.83 | C |
| SP | Lackey, J.Lackey, John # >> | 40 | 2017 | R | 48 | 12 | 12 | 4.59 | .300 | .340 | 1.31 | 8.9 | 2.9 | 7.7 | 170 | 168 | 36 | 55 | 146 | 0 | 0 | 11 | 95 | +1.08 | C |
| SP | Lester, J.Lester, Jon >> | 34 | 2017 | L | 43 | 13 | 8 | 4.33 | .306 | .340 | 1.35 | 9.0 | 3.2 | 8.8 | 180 | 180 | 26 | 63 | 176 | 1 | 0 | 3 | 99 | +0.65 | C |
| RP | Davis, W.Davis, Wade # >> | 32 | 2017 | R | 84 | 4 | 2 | 2.30 | .267 | .310 | 1.16 | 6.1 | 4.3 | 12.3 | 58 | 39 | 6 | 28 | 79 | 0 | 32 | 7 | 23 | +1.88 | C |
| RP | Strop, P.Strop, Pedro >> | 33 | 2017 | R | 74 | 5 | 4 | 2.83 | .272 | .320 | 1.18 | 6.8 | 3.9 | 9.8 | 60 | 45 | 4 | 26 | 65 | 0 | 0 | 7 | 23 | +1.09 | C |
| RP | Wilson, J.Wilson, Justin >> | 30 | 2017 | L | 87 | 4 | 4 | 3.41 | .263 | .310 | 1.13 | 5.9 | 4.3 | 12.7 | 61 | 40 | 5 | 29 | 86 | 0 | 13 | 4 | 24 | +1.73 | C |
| RP | Uehara, K.Uehara, Koji >> | 43 | 2017 | R | 56 | 3 | 4 | 3.98 | .276 | .320 | 1.23 | 8.4 | 2.7 | 9.6 | 43 | 40 | 7 | 13 | 46 | 0 | 2 | 0 | 21 | +0.11 | C |
| RP | Montgomery, M.Montgomery, Mike >> | 28 | 2017 | L | 58 | 7 | 8 | 3.38 | .287 | .330 | 1.24 | 7.3 | 3.9 | 6.7 | 130 | 105 | 10 | 56 | 97 | 0 | 3 | 7 | 51 | +2.32 | C |
| RP | Rondon, H.Rondon, Hector >> | 30 | 2017 | R | 72 | 4 | 1 | 4.24 | .269 | .310 | 1.17 | 7.5 | 3.0 | 11.1 | 60 | 50 | 10 | 20 | 74 | 0 | 0 | 3 | 24 | +0.37 | C |
| RP | Grimm, J.Grimm, Justin >> | 29 | 2017 | R | 41 | 1 | 2 | 5.53 | .303 | .350 | 1.38 | 7.9 | 4.6 | 9.3 | 55 | 48 | 12 | 28 | 57 | 0 | 1 | 4 | 20 | -0.3 | C |
| CL | Edwards, C.Edwards, Carl # >> | 26 | 2017 | R | 93 | 5 | 4 | 2.98 | .257 | .300 | 1.09 | 4.2 | 5.6 | 12.7 | 66 | 31 | 6 | 41 | 93 | 0 | 0 | 4 | 22 | +1.68 | C |
| RP | Rosario, R.Rosario, Randy >> | 24 | 2018 | L | 20 | 4 | 0 | 3.66 | .318 | .370 | 1.50 | 9.2 | 4.3 | 5.9 | 46 | 47 | 5 | 22 | 30 | 0 | 1 | 1 | 23 | +0.18 | U |
| SP | Hamels, C.Hamels, Cole >> | 35 | 2018 | L | 66 | 9 | 12 | 3.78 | .294 | .330 | 1.27 | 8.3 | 3.1 | 8.9 | 190 | 176 | 29 | 65 | 188 | 1 | 0 | 7 | 105 | +3.75 | U |
| SP | Darvish, Y.Darvish, Yu >> | 31 | 2018 | R | 50 | 1 | 3 | 4.95 | .305 | .360 | 1.43 | 8.1 | 4.7 | 11.0 | 40 | 36 | 7 | 21 | 49 | 0 | 0 | 2 | 89 | -0.07 | U |
| RP | Morrow, B.Morrow, Brandon >> | 34 | 2018 | R | 76 | 0 | 0 | 1.47 | .248 | .300 | 1.10 | 7.2 | 2.7 | 9.3 | 30 | 24 | 2 | 9 | 31 | 0 | 22 | 1 | 23 | +1.44 | U |
| RP | Farrell, L.Farrell, Luke >> | 27 | 2018 | R | 32 | 3 | 4 | 5.17 | .309 | .360 | 1.48 | 8.7 | 4.6 | 11.3 | 31 | 30 | 7 | 16 | 39 | 0 | 0 | 1 | 30 | -0.66 | U |