| SP | Quintana, J.Quintana, Jose >> | 29 | 2018 | L | 52 | 13 | 11 | 4.03 | .302 | .00 | 1.32 | 8.4 | 3.5 | 8.2 | 174 | 162 | 25 | 68 | 158 | 0 | 0 | 3 | 96 | 18 | C |
| SP | Hendricks, K.Hendricks, Kyle >> | 28 | 2018 | R | 69 | 14 | 11 | 3.44 | .273 | .00 | 1.15 | 8.3 | 2.0 | 7.3 | 199 | 184 | 22 | 44 | 161 | 0 | 0 | 0 | 107 | 17 | C |
| SP | Lester, J.Lester, Jon >> | 34 | 2018 | L | 47 | 18 | 6 | 3.32 | .301 | .00 | 1.31 | 8.7 | 3.2 | 7.4 | 181 | 174 | 24 | 64 | 149 | 0 | 0 | 4 | 100 | 17 | C |
| RP | Hancock, J.Hancock, Justin >> | 27 | 2018 | R | 81 | 0 | 0 | 1.46 | .233 | .00 | 1.17 | 3.8 | 6.8 | 8.3 | 12 | 5 | 1 | 9 | 11 | 0 | 0 | 0 | 24 | 21 | C |
| RP | Rosario, R.Rosario, Randy >> | 24 | 2018 | L | 29 | 4 | 0 | 3.66 | .318 | .00 | 1.50 | 9.2 | 4.3 | 5.9 | 46 | 47 | 5 | 22 | 30 | 0 | 1 | 1 | 23 | 16 | C |
| RP | Norwood, J.Norwood, James >> | 24 | 2018 | R | 12 | 0 | 1 | 4.09 | .306 | .00 | 1.73 | 11.5 | 4.1 | 8.2 | 11 | 14 | 0 | 5 | 10 | 0 | 0 | 1 | 23 | 20 | C |
| RP | Duensing, B.Duensing, Brian >> | 35 | 2018 | L | 11 | 3 | 0 | 7.65 | .370 | .00 | 1.92 | 10.2 | 7.1 | 5.8 | 37 | 42 | 6 | 29 | 24 | 0 | 1 | 0 | 23 | 16 | C |
| SP | Chatwood, T.Chatwood, Tyler >> | 28 | 2018 | R | 33 | 4 | 6 | 5.30 | .370 | .00 | 1.82 | 8.0 | 8.3 | 7.4 | 103 | 92 | 9 | 95 | 85 | 0 | 0 | 8 | 77 | 17 | C |
| RP | Morrow, B.Morrow, Brandon >> | 34 | 2018 | R | 78 | 0 | 0 | 1.47 | .248 | .00 | 1.10 | 7.2 | 2.7 | 9.3 | 30 | 24 | 2 | 9 | 31 | 0 | 22 | 1 | 23 | 20 | C |
| SP | Darvish, Y.Darvish, Yu >> | 31 | 2018 | R | 49 | 1 | 3 | 4.95 | .305 | .00 | 1.43 | 8.1 | 4.7 | 11.0 | 40 | 36 | 7 | 21 | 49 | 0 | 0 | 2 | 89 | 22 | C |
| RP | Farrell, L.Farrell, Luke >> | 27 | 2018 | R | 43 | 3 | 4 | 5.17 | .309 | .00 | 1.48 | 8.7 | 4.6 | 11.3 | 31 | 30 | 7 | 16 | 39 | 0 | 0 | 1 | 30 | 23 | C |
| SP | Hamels, C.Hamels, Cole >> | 35 | 2018 | L | 63 | 9 | 12 | 3.78 | .294 | .00 | 1.27 | 8.3 | 3.1 | 8.9 | 190 | 176 | 29 | 65 | 188 | 1 | 0 | 7 | 105 | 18 | C |
| RP | Strop, P.Strop, Pedro >> | 33 | 2018 | R | 88 | 6 | 1 | 2.26 | .240 | .00 | 1.00 | 5.8 | 3.2 | 8.7 | 59 | 38 | 4 | 21 | 57 | 0 | 13 | 3 | 23 | 19 | C |
| RP | Mills, A.Mills, Alec >> | 26 | 2018 | R | 93 | 0 | 1 | 4.00 | .220 | .00 | 1.00 | 5.5 | 3.5 | 11.5 | 18 | 11 | 1 | 7 | 23 | 0 | 0 | 1 | 48 | 21 | C |
| RP | Wilson, J.Wilson, Justin >> | 30 | 2018 | L | 55 | 4 | 5 | 3.46 | .312 | .00 | 1.44 | 7.5 | 5.5 | 11.5 | 54 | 45 | 5 | 33 | 69 | 0 | 0 | 4 | 23 | 21 | C |
| RP | Montgomery, M.Montgomery, Mike >> | 28 | 2018 | L | 35 | 5 | 6 | 3.99 | .308 | .00 | 1.37 | 9.5 | 2.8 | 6.2 | 124 | 131 | 10 | 39 | 86 | 0 | 0 | 4 | 59 | 16 | C |
| RP | De La Rosa, J.De La Rosa, Jorge >> | 37 | 2018 | L | 45 | 0 | 2 | 3.38 | .305 | .00 | 1.39 | 8.2 | 4.3 | 7.6 | 56 | 51 | 6 | 27 | 47 | 0 | 1 | 2 | 23 | 17 | C |
| RP | Chavez, J.Chavez, Jesse >> | 35 | 2018 | R | 72 | 5 | 2 | 2.55 | .255 | .00 | 1.06 | 8.0 | 1.6 | 8.7 | 95 | 84 | 13 | 17 | 92 | 0 | 5 | 1 | 30 | 19 | C |
| RP | Kintzler, B.Kintzler, Brandon >> | 33 | 2018 | R | 25 | 3 | 3 | 4.60 | .319 | .00 | 1.48 | 10.1 | 3.3 | 6.5 | 60 | 67 | 5 | 22 | 43 | 0 | 2 | 1 | 23 | 17 | C |
| RP | Cishek, S.Cishek, Steven >> | 32 | 2018 | R | 88 | 4 | 3 | 2.18 | .249 | .00 | 1.04 | 5.8 | 3.6 | 10.0 | 70 | 45 | 5 | 28 | 78 | 0 | 4 | 2 | 23 | 21 | C |
| RP | Edwards, C.Edwards, Carl >> | 26 | 2018 | R | 72 | 3 | 2 | 2.60 | .291 | .00 | 1.31 | 6.2 | 5.5 | 11.6 | 52 | 36 | 2 | 32 | 67 | 0 | 0 | 4 | 23 | 23 | C |
| RP | Bass, A.Bass, Anthony >> | 30 | 2018 | R | 32 | 0 | 0 | 2.93 | .276 | .00 | 1.40 | 10.8 | 1.8 | 8.4 | 15 | 18 | 1 | 3 | 14 | 0 | 0 | 2 | 23 | 24 | C |