| SP | Guerra, J.Guerra, Junior >> | 33 | 2018 | R | 35 | 6 | 9 | 4.09 | .314 | .00 | 1.40 | 9.1 | 3.5 | 8.7 | 141 | 143 | 19 | 55 | 136 | 0 | 0 | 11 | 81 | 19 | C |
| SP | Anderson, C.Anderson, Chase >> | 30 | 2018 | R | 71 | 9 | 8 | 3.93 | .280 | .00 | 1.19 | 7.5 | 3.2 | 7.3 | 158 | 131 | 30 | 57 | 128 | 0 | 0 | 1 | 94 | 17 | C |
| RP | Albers, M.Albers, Matt >> | 35 | 2018 | R | 9 | 3 | 3 | 7.34 | .337 | .00 | 1.68 | 11.9 | 3.2 | 8.5 | 34 | 45 | 10 | 12 | 32 | 0 | 1 | 1 | 23 | 20 | C |
| RP | Jeffress, J.Jeffress, Jeremy >> | 30 | 2018 | R | 90 | 8 | 1 | 1.29 | .242 | .00 | 1.00 | 5.8 | 3.2 | 10.5 | 76 | 49 | 5 | 27 | 89 | 0 | 15 | 4 | 23 | 21 | C |
| SP | Peralta, F.Peralta, Freddy >> | 22 | 2018 | R | 91 | 6 | 4 | 4.25 | .267 | .00 | 1.14 | 5.7 | 4.6 | 11.1 | 78 | 49 | 8 | 40 | 96 | 0 | 0 | 3 | 87 | 22 | C |
| SP | Davies, Z.Davies, Zach >> | 25 | 2018 | R | 37 | 2 | 7 | 4.77 | .297 | .00 | 1.33 | 9.1 | 2.9 | 6.7 | 66 | 67 | 8 | 21 | 49 | 0 | 0 | 1 | 90 | 17 | C |
| SP | Suter, B.Suter, Brent >> | 28 | 2018 | L | 55 | 8 | 7 | 4.44 | .279 | .00 | 1.20 | 9.1 | 1.7 | 7.5 | 101 | 102 | 18 | 19 | 84 | 0 | 0 | 1 | 90 | 17 | C |
| RP | Williams, T.Williams, Taylor † >> | 26 | 2018 | R | 34 | 1 | 3 | 4.25 | .316 | .00 | 1.47 | 9.0 | 4.2 | 9.7 | 53 | 53 | 6 | 25 | 57 | 0 | 0 | 4 | 23 | 21 | C |
| RP | Drake, O.Drake, Oliver >> | 31 | 2018 | R | 68 | 1 | 0 | 3.82 | .273 | .00 | 1.24 | 7.1 | 4.1 | 10.1 | 33 | 26 | 2 | 15 | 37 | 0 | 0 | 4 | 23 | 22 | C |
| RP | Petricka, J.Petricka, Jake >> | 30 | 2018 | R | 9 | 3 | 1 | 4.53 | .341 | .00 | 1.67 | 11.8 | 3.2 | 8.2 | 45 | 59 | 6 | 16 | 41 | 0 | 0 | 5 | 23 | 18 | C |
| RP | Woodruff, B.Woodruff, Brandon >> | 25 | 2018 | R | 66 | 3 | 0 | 3.61 | .269 | .00 | 1.19 | 7.7 | 3.0 | 10.1 | 42 | 36 | 4 | 14 | 47 | 0 | 1 | 1 | 42 | 21 | C |
| RP | Hader, J.Hader, Josh >> | 24 | 2018 | L | 99 | 6 | 1 | 2.43 | .207 | .00 | 0.81 | 4.0 | 3.3 | 15.9 | 81 | 36 | 9 | 30 | 143 | 0 | 12 | 0 | 29 | 25 | C |
| SP | Chacin, J.Chacin, Jhoulys >> | 30 | 2018 | R | 78 | 15 | 8 | 3.50 | .277 | .00 | 1.17 | 7.2 | 3.3 | 7.3 | 192 | 153 | 18 | 71 | 156 | 0 | 0 | 5 | 97 | 17 | C |
| RP | Burnes, C.Burnes, Corbin >> | 23 | 2018 | R | 83 | 7 | 0 | 2.61 | .235 | .00 | 1.00 | 6.4 | 2.6 | 8.3 | 38 | 27 | 4 | 11 | 35 | 0 | 1 | 2 | 26 | 18 | C |
| RP | Jennings, D.Jennings, Dan >> | 31 | 2018 | L | 30 | 4 | 5 | 3.22 | .306 | .00 | 1.39 | 9.3 | 3.2 | 6.3 | 64 | 66 | 6 | 23 | 45 | 0 | 1 | 2 | 23 | 16 | C |
| RP | Barnes, J.Barnes, Jacob >> | 28 | 2018 | R | 24 | 0 | 1 | 3.33 | .325 | .00 | 1.54 | 9.6 | 4.3 | 8.8 | 48 | 51 | 4 | 23 | 47 | 0 | 2 | 4 | 23 | 19 | C |
| RP | Lyles, J.Lyles, Jordan >> | 27 | 2018 | R | 47 | 3 | 4 | 4.11 | .291 | .00 | 1.28 | 8.6 | 2.9 | 8.7 | 87 | 83 | 12 | 28 | 84 | 0 | 0 | 5 | 46 | 19 | C |
| RP | Knebel, C.Knebel, Corey >> | 26 | 2018 | R | 86 | 4 | 3 | 3.58 | .255 | .00 | 1.09 | 6.2 | 3.6 | 14.4 | 55 | 38 | 7 | 22 | 88 | 0 | 16 | 0 | 23 | 24 | C |