| SP | Guerra, J.Guerra, Junior >> | 33 | 2018 | R | 35 | 31 | 31 | 8 | 13 | 4.50 | .308 | 1.30 | 8.9 | 2.8 | 10.3 | 158.0 | 156 | 81 | 79 | 23 | 50 | 181 | 0 | 0 | 0 | 0 | 0 | 5 | 10 | 3.65 |
| SP | Anderson, C.Anderson, Chase >> | 30 | 2018 | R | 71 | 27 | 27 | 10 | 6 | 2.36 | .260 | 1.02 | 6.4 | 2.8 | 7.9 | 171.2 | 121 | 48 | 45 | 12 | 54 | 151 | 0 | 0 | 0 | 0 | 0 | 6 | 2 | 3.20 |
| RP | Albers, M.Albers, Matt >> | 35 | 2018 | R | 9 | 85 | 0 | 3 | 2 | 4.21 | .324 | 1.39 | 9.4 | 3.1 | 9.5 | 83.1 | 87 | 41 | 39 | 10 | 29 | 88 | 0 | 6 | 2 | 0 | 0 | 4 | 3 | 3.64 |
| RP | Jeffress, J.Jeffress, Jeremy >> | 30 | 2018 | R | 90 | 78 | 0 | 7 | 1 | 1.94 | .188 | 0.65 | 4.2 | 1.6 | 9.7 | 88.0 | 41 | 19 | 19 | 8 | 16 | 95 | 0 | 9 | 1 | 0 | 0 | 4 | 2 | 2.70 |
| SP | Peralta, F.Peralta, Freddy >> | 22 | 2018 | R | 91 | 29 | 29 | 14 | 6 | 1.88 | .249 | 0.96 | 4.7 | 4.0 | 11.2 | 168.0 | 88 | 38 | 35 | 9 | 74 | 209 | 0 | 0 | 0 | 0 | 0 | 5 | 5 | 2.62 |
| SP | Davies, Z.Davies, Zach >> | 25 | 2018 | R | 37 | 28 | 28 | 17 | 8 | 3.40 | .300 | 1.25 | 8.0 | 3.2 | 7.2 | 167.0 | 149 | 67 | 63 | 20 | 60 | 133 | 0 | 0 | 0 | 0 | 0 | 6 | 4 | 4.15 |
| SP | Suter, B.Suter, Brent >> | 28 | 2018 | L | 55 | 23 | 23 | 10 | 4 | 3.31 | .277 | 1.14 | 8.2 | 2.1 | 8.2 | 136.0 | 124 | 53 | 50 | 12 | 31 | 124 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3.03 |
| RP | Williams, T.Williams, Taylor † >> | 26 | 2018 | R | 34 | 80 | 0 | 7 | 2 | 1.93 | .272 | 1.11 | 6.2 | 3.9 | 11.7 | 79.1 | 54 | 17 | 17 | 4 | 34 | 103 | 0 | 5 | 5 | 0 | 0 | 1 | 4 | 2.38 |
| RP | Drake, O.Drake, Oliver >> | 31 | 2018 | R | 68 | 62 | 0 | 6 | 3 | 1.25 | .233 | 0.84 | 4.5 | 3.1 | 10.5 | 64.2 | 32 | 9 | 9 | 1 | 22 | 75 | 0 | 8 | 0 | 0 | 0 | 5 | 4 | 2.13 |
| RP | Petricka, J.Petricka, Jake >> | 30 | 2018 | R | 9 | 40 | 0 | 1 | 3 | 4.85 | .308 | 1.31 | 9.0 | 2.8 | 9.5 | 39.0 | 39 | 21 | 21 | 6 | 12 | 41 | 0 | 11 | 4 | 0 | 0 | 1 | 2 | 3.90 |
| RP | Woodruff, B.Woodruff, Brandon >> | 25 | 2018 | R | 66 | 20 | 0 | 4 | 1 | 1.11 | .171 | 0.59 | 4.2 | 1.1 | 13.2 | 32.1 | 15 | 5 | 4 | 2 | 4 | 47 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 1.34 |
| RP | Hader, J.Hader, Josh >> | 24 | 2018 | L | 99 | 126 | 0 | 3 | 1 | 1.30 | .185 | 0.68 | 3.1 | 3.1 | 13.1 | 76.1 | 26 | 14 | 11 | 2 | 26 | 111 | 0 | 6 | 2 | 0 | 0 | 0 | 0 | 1.45 |
| SP | Chacin, J.Chacin, Jhoulys >> | 30 | 2018 | R | 78 | 35 | 35 | 15 | 10 | 2.22 | .261 | 1.02 | 5.7 | 3.4 | 8.0 | 227.0 | 145 | 61 | 56 | 15 | 86 | 203 | 2 | 0 | 0 | 2 | 0 | 10 | 6 | 3.34 |
| RP | Burnes, C.Burnes, Corbin >> | 23 | 2018 | R | 83 | 9 | 0 | 1 | 2 | 4.66 | .293 | 1.24 | 10.0 | 2.0 | 14.0 | 9.2 | 10 | 5 | 5 | 0 | 2 | 14 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0.56 |
| RP | Jennings, D.Jennings, Dan >> | 31 | 2018 | L | 30 | 107 | 0 | 1 | 3 | 2.77 | .281 | 1.15 | 8.1 | 2.3 | 7.3 | 52.0 | 47 | 22 | 16 | 3 | 13 | 42 | 0 | 6 | 2 | 0 | 0 | 1 | 0 | 2.94 |
| RP | Barnes, J.Barnes, Jacob >> | 28 | 2018 | R | 24 | 7 | 0 | 1 | 0 | 1.29 | .276 | 1.00 | 5.1 | 3.9 | 6.4 | 7.0 | 4 | 1 | 1 | 0 | 3 | 5 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 3.29 |
| RP | Lyles, J.Lyles, Jordan >> | 27 | 2018 | R | 47 | 10 | 0 | 0 | 0 | 3.00 | .289 | 1.22 | 6.0 | 5.0 | 11.0 | 9.0 | 6 | 3 | 3 | 2 | 5 | 11 | 0 | 3 | 0 | 0 | 0 | 0 | 2 | 5.11 |
| RP | Knebel, C.Knebel, Corey >> | 26 | 2018 | R | 86 | 22 | 0 | 0 | 0 | 0.83 | .207 | 0.78 | 5.1 | 2.1 | 15.0 | 21.2 | 12 | 2 | 2 | 1 | 5 | 35 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 1.00 |