| SP | Hamels, C.Hamels, Cole >> | 35 | 2018 | L | 61 | 33 | 33 | 12 | 16 | 3.70 | .298 | 1.25 | 8.3 | 3.0 | 9.2 | 218.2 | 201 | 109 | 90 | 22 | 72 | 222 | 1 | 0 | 0 | 0 | 0 | 5 | 3 | 3.33 |
| SP | Hendricks, K.Hendricks, Kyle † >> | 28 | 2018 | R | 68 | 32 | 32 | 18 | 8 | 2.24 | .253 | 0.99 | 7.1 | 1.8 | 8.2 | 237.0 | 186 | 65 | 59 | 26 | 48 | 217 | 5 | 0 | 0 | 3 | 0 | 7 | 0 | 3.29 |
| RP | Morrow, B.Morrow, Brandon >> | 34 | 2018 | R | 75 | 92 | 0 | 4 | 4 | 3.70 | .276 | 1.08 | 6.4 | 3.4 | 9.9 | 80.1 | 57 | 34 | 33 | 8 | 30 | 88 | 0 | 1 | 3 | 0 | 0 | 5 | 1 | 3.41 |
| RP | Kintzler, B.Kintzler, Brandon >> | 33 | 2018 | R | 20 | 58 | 0 | 5 | 1 | 2.91 | .297 | 1.21 | 9.3 | 1.6 | 8.2 | 34.0 | 35 | 11 | 11 | 5 | 6 | 31 | 0 | 1 | 0 | 0 | 0 | 2 | 0 | 3.79 |
| RP | Edwards, C.Edwards, Carl >> | 26 | 2018 | R | 68 | 37 | 0 | 0 | 3 | 2.66 | .276 | 1.06 | 5.9 | 3.9 | 10.2 | 23.2 | 15 | 8 | 7 | 1 | 10 | 26 | 0 | 1 | 0 | 0 | 0 | 2 | 3 | 2.87 |
| RP | Cishek, S.Cishek, Steven >> | 32 | 2018 | R | 86 | 19 | 0 | 0 | 1 | 0.64 | .176 | 0.64 | 3.2 | 2.6 | 11.6 | 14.0 | 5 | 1 | 1 | 0 | 4 | 18 | 0 | 1 | 1 | 0 | 0 | 0 | 2 | 1.29 |
| SP | Darvish, Y.Darvish, Yu >> | 31 | 2018 | R | 49 | 32 | 32 | 13 | 9 | 2.92 | .273 | 1.09 | 6.4 | 3.4 | 11.6 | 185.0 | 132 | 70 | 60 | 20 | 69 | 238 | 2 | 0 | 0 | 2 | 0 | 7 | 4 | 3.06 |
| RP | Montgomery, M.Montgomery, Mike >> | 28 | 2018 | L | 31 | 88 | 0 | 2 | 1 | 3.64 | .315 | 1.33 | 9.2 | 2.8 | 8.3 | 54.1 | 55 | 22 | 22 | 6 | 17 | 50 | 0 | 1 | 2 | 0 | 0 | 3 | 1 | 3.70 |
| SP | Quintana, J.Quintana, Jose >> | 29 | 2018 | L | 50 | 28 | 28 | 7 | 11 | 3.87 | .307 | 1.25 | 8.7 | 2.6 | 7.4 | 169.2 | 163 | 75 | 73 | 21 | 49 | 139 | 1 | 0 | 0 | 1 | 0 | 13 | 4 | 4.07 |
| SP | Chatwood, T.Chatwood, Tyler >> | 28 | 2018 | R | 32 | 5 | 5 | 2 | 1 | 1.01 | .266 | 1.05 | 3.8 | 5.9 | 7.3 | 26.2 | 11 | 3 | 3 | 1 | 17 | 21 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3.96 |
| RP | Duensing, B.Duensing, Brian >> | 35 | 2018 | L | 8 | 73 | 0 | 3 | 1 | 3.16 | .319 | 1.37 | 8.1 | 4.4 | 6.7 | 31.1 | 28 | 12 | 11 | 2 | 15 | 23 | 0 | 0 | 2 | 0 | 0 | 1 | 0 | 3.90 |
| RP | Rosario, R.Rosario, Randy >> | 24 | 2018 | L | 23 | 41 | 0 | 0 | 0 | 4.60 | .309 | 1.34 | 7.2 | 5.4 | 8.4 | 15.2 | 12 | 9 | 8 | 5 | 9 | 14 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 7.27 |
| RP | Butler, E.Butler, Eddie >> | 27 | 2018 | R | 11 | 20 | 0 | 1 | 0 | 5.64 | .374 | 1.75 | 13.5 | 2.5 | 9.0 | 22.1 | 33 | 15 | 14 | 4 | 6 | 22 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 4.32 |
| RP | Farrell, L.Farrell, Luke >> | 27 | 2018 | R | 38 | 23 | 0 | 0 | 1 | 3.48 | .313 | 1.37 | 7.1 | 5.5 | 10.9 | 33.2 | 26 | 13 | 13 | 2 | 20 | 40 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.18 |