| SP | deGrom, J.deGrom, Jacob † # >> | 30 | 2018 | R | 99 | 23 | 23 | 12 | 8 | 2.94 | .257 | 1.02 | 7.4 | 1.8 | 11.6 | 171.2 | 140 | 58 | 56 | 14 | 35 | 221 | 2 | 0 | 0 | 1 | 18 | 3 | 3 | 2.15 |
| SP | Buchholz, C.Buchholz, Clay >> | 34 | 2018 | R | 89 | 24 | 24 | 11 | 6 | 3.10 | .272 | 1.08 | 7.2 | 2.6 | 7.3 | 165.2 | 132 | 60 | 57 | 16 | 47 | 134 | 2 | 0 | 0 | 1 | 17 | 7 | 0 | 3.62 |
| SP | Rodriguez, D.Rodriguez, Dereck >> | 26 | 2018 | R | 76 | 24 | 24 | 7 | 9 | 5.26 | .346 | 1.56 | 10.9 | 3.2 | 6.8 | 138.2 | 167 | 83 | 81 | 16 | 49 | 105 | 0 | 0 | 0 | 0 | 8 | 4 | 1 | 4.14 |
| SP | Mikolas, M.Mikolas, Miles >> | 29 | 2018 | R | 73 | 23 | 23 | 6 | 10 | 4.88 | .302 | 1.28 | 9.2 | 2.3 | 6.3 | 147.2 | 151 | 85 | 80 | 22 | 38 | 103 | 1 | 0 | 0 | 0 | 11 | 3 | 3 | 4.38 |
| SP | Marquez, G.Marquez, German >> | 23 | 2018 | R | 65 | 23 | 23 | 10 | 3 | 4.22 | .331 | 1.49 | 10.2 | 3.3 | 10.1 | 138.2 | 156 | 65 | 65 | 21 | 50 | 155 | 0 | 0 | 0 | 0 | 11 | 0 | 7 | 3.82 |
| RP | Castillo, J.Castillo, Jose >> | 22 | 2018 | L | 97 | 64 | 0 | 4 | 4 | 3.20 | .270 | 1.09 | 6.7 | 3.1 | 10.8 | 90.0 | 67 | 32 | 32 | 6 | 31 | 108 | 0 | 10 | 2 | 0 | 0 | 2 | 4 | 2.57 |
| RP | Fields, J.Fields, Josh >> | 32 | 2018 | R | 87 | 58 | 0 | 3 | 9 | 4.84 | .358 | 1.61 | 10.2 | 4.3 | 7.4 | 67.0 | 76 | 41 | 36 | 8 | 32 | 55 | 0 | 7 | 7 | 0 | 0 | 4 | 0 | 4.52 |
| RP | Petit, Y.Petit, Yusmeiro # >> | 34 | 2018 | R | 73 | 48 | 0 | 3 | 5 | 6.20 | .354 | 1.58 | 12.7 | 1.7 | 7.5 | 49.1 | 69 | 37 | 34 | 9 | 9 | 41 | 0 | 5 | 4 | 0 | 0 | 3 | 1 | 4.45 |
| RP | Casilla, S.Casilla, Santiago >> | 38 | 2018 | R | 63 | 29 | 0 | 2 | 3 | 3.34 | .282 | 1.15 | 4.3 | 6.2 | 9.0 | 29.2 | 14 | 11 | 11 | 1 | 20 | 29 | 0 | 6 | 0 | 0 | 0 | 1 | 4 | 3.62 |
| RP | Buchter, R.Buchter, Ryan >> | 31 | 2018 | L | 56 | 33 | 0 | 2 | 0 | 4.89 | .293 | 1.22 | 8.5 | 2.6 | 9.7 | 38.2 | 36 | 21 | 21 | 7 | 11 | 41 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 4.18 |