| SP | Peralta, F.Peralta, Freddy >> | 22 | 2018 | R | 91 | 21 | 21 | 5 | 8 | 4.63 | .340 | 1.51 | 8.0 | 5.6 | 9.6 | 103.0 | 92 | 56 | 53 | 9 | 64 | 110 | 0 | 0 | 0 | 0 | 4 | 3 | 5 | 3.95 |
| SP | Kershaw, C.Kershaw, Clayton >> | 30 | 2018 | L | 88 | 20 | 20 | 9 | 4 | 3.21 | .272 | 1.08 | 7.8 | 2.0 | 8.7 | 134.2 | 116 | 52 | 48 | 15 | 30 | 129 | 1 | 0 | 0 | 1 | 15 | 5 | 7 | 3.31 |
| SP | Mikolas, M.Mikolas, Miles >> | 29 | 2018 | R | 73 | 20 | 20 | 4 | 12 | 5.27 | .343 | 1.53 | 11.7 | 2.1 | 9.0 | 114.1 | 148 | 68 | 67 | 21 | 27 | 114 | 0 | 0 | 0 | 0 | 10 | 4 | 6 | 4.21 |
| SP | Cahill, T.Cahill, Trevor >> | 30 | 2018 | R | 72 | 19 | 19 | 1 | 7 | 7.55 | .392 | 1.91 | 12.2 | 5.1 | 8.0 | 84.2 | 114 | 71 | 71 | 21 | 48 | 75 | 0 | 0 | 0 | 0 | 3 | 2 | 7 | 6.25 |
| SP | Marquez, G.Marquez, German >> | 23 | 2018 | R | 65 | 21 | 19 | 5 | 8 | 5.43 | .356 | 1.62 | 11.4 | 3.2 | 10.1 | 111.0 | 140 | 68 | 67 | 12 | 40 | 125 | 0 | 0 | 0 | 0 | 5 | 4 | 4 | 3.34 |
| CL | Kimbrel, C.Kimbrel, Craig >> | 30 | 2018 | R | 94 | 58 | 0 | 1 | 9 | 4.64 | .379 | 1.80 | 9.2 | 7.1 | 11.8 | 52.1 | 53 | 31 | 27 | 7 | 41 | 68 | 0 | 15 | 3 | 0 | 0 | 2 | 5 | 4.62 |
| RP | Kelley, S.Kelley, Shawn >> | 34 | 2018 | R | 92 | 67 | 0 | 4 | 1 | 3.58 | .307 | 1.31 | 8.1 | 3.7 | 10.5 | 88.0 | 79 | 38 | 35 | 11 | 36 | 103 | 0 | 2 | 6 | 0 | 0 | 2 | 2 | 3.58 |
| RP | Petit, Y.Petit, Yusmeiro >> | 34 | 2018 | R | 73 | 59 | 0 | 4 | 7 | 3.65 | .306 | 1.31 | 8.6 | 3.2 | 8.1 | 74.0 | 71 | 31 | 30 | 7 | 26 | 67 | 0 | 0 | 1 | 0 | 0 | 1 | 2 | 3.51 |
| RP | Chavez, J.Chavez, Jesse >> | 35 | 2018 | R | 65 | 47 | 0 | 1 | 1 | 6.79 | .375 | 1.80 | 14.0 | 2.3 | 6.8 | 54.1 | 84 | 42 | 41 | 15 | 14 | 41 | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 5.87 |