| RP | Shreve, C.Shreve, Chasen >> | 27 | 2018 | L | 36 | 3 | 4 | 3.93 | .325 | .00 | 1.54 | 9.2 | 4.7 | 10.7 | 52 | 53 | 11 | 27 | 62 | 0 | 1 | 2 | 23 | 22 | C |
| SP | Mikolas, M.Mikolas, Miles >> | 29 | 2018 | R | 71 | 18 | 4 | 2.83 | .261 | .00 | 1.08 | 8.4 | 1.3 | 6.6 | 200 | 186 | 16 | 29 | 146 | 1 | 0 | 2 | 110 | 16 | C |
| RP | Poncedeleon, D.Poncedeleon, Daniel >> | 26 | 2018 | R | 80 | 0 | 2 | 2.73 | .253 | .00 | 1.12 | 6.5 | 3.5 | 8.5 | 33 | 24 | 2 | 13 | 31 | 0 | 1 | 0 | 55 | 20 | C |
| RP | Brebbia, J.Brebbia, John >> | 28 | 2018 | R | 72 | 3 | 3 | 3.20 | .269 | .00 | 1.18 | 7.7 | 2.9 | 10.8 | 50 | 43 | 5 | 16 | 60 | 0 | 2 | 1 | 23 | 22 | C |
| SP | Weaver, L.Weaver, Luke >> | 24 | 2018 | R | 20 | 7 | 11 | 4.95 | .328 | .00 | 1.50 | 9.9 | 3.6 | 8.0 | 136 | 150 | 19 | 54 | 121 | 0 | 0 | 3 | 81 | 18 | C |
| RP | Mayers, M.Mayers, Mike >> | 26 | 2018 | R | 30 | 2 | 1 | 4.70 | .312 | .00 | 1.45 | 10.4 | 2.6 | 8.6 | 51 | 59 | 7 | 15 | 49 | 0 | 1 | 4 | 23 | 19 | C |
| RP | Leone, D.Leone, Dominic >> | 26 | 2018 | R | 33 | 1 | 2 | 4.50 | .299 | .00 | 1.46 | 10.1 | 3.0 | 9.8 | 24 | 27 | 3 | 8 | 26 | 0 | 0 | 0 | 23 | 23 | C |
| RP | Webb, T.Webb, Tyler >> | 27 | 2018 | L | 29 | 0 | 0 | 1.76 | .286 | .00 | 1.47 | 9.6 | 3.6 | 6.6 | 15 | 16 | 1 | 6 | 11 | 0 | 0 | 0 | 23 | 21 | C |
| SP | Wainwright, A.Wainwright, Adam >> | 37 | 2018 | R | 30 | 2 | 4 | 4.46 | .312 | .00 | 1.48 | 9.2 | 4.1 | 9.0 | 40 | 41 | 5 | 18 | 40 | 0 | 0 | 1 | 89 | 20 | C |
| RP | Cecil, B.Cecil, Brett >> | 31 | 2018 | L | 7 | 1 | 1 | 6.89 | .376 | .00 | 2.00 | 11.0 | 7.0 | 5.3 | 32 | 39 | 5 | 25 | 19 | 0 | 0 | 1 | 23 | 16 | C |
| SP | Gant, J.Gant, John >> | 25 | 2018 | R | 66 | 7 | 6 | 3.47 | .296 | .00 | 1.30 | 7.2 | 4.5 | 7.5 | 114 | 91 | 9 | 57 | 95 | 0 | 0 | 5 | 79 | 17 | C |
| RP | Gregerson, L.Gregerson, Luke >> | 34 | 2018 | R | 19 | 0 | 0 | 7.11 | .303 | .00 | 1.67 | 10.5 | 4.5 | 9.0 | 12 | 14 | 2 | 6 | 12 | 0 | 0 | 2 | 23 | 22 | C |
| RP | Gomber, A.Gomber, Austin >> | 24 | 2018 | L | 28 | 6 | 2 | 4.44 | .325 | .00 | 1.51 | 9.7 | 3.8 | 8.0 | 75 | 81 | 7 | 32 | 67 | 0 | 0 | 3 | 48 | 18 | C |
| RP | Tuivailala, S.Tuivailala, Sam >> | 25 | 2018 | R | 27 | 3 | 3 | 3.69 | .309 | .00 | 1.48 | 10.2 | 3.2 | 7.5 | 31 | 35 | 3 | 11 | 26 | 0 | 0 | 4 | 23 | 18 | C |
| RP | Lyons, T.Lyons, Tyler >> | 30 | 2018 | L | 12 | 1 | 0 | 8.64 | .356 | .00 | 2.00 | 13.5 | 4.5 | 10.7 | 16 | 24 | 3 | 8 | 19 | 0 | 0 | 2 | 23 | 29 | C |
| SP | Martinez, C.Martinez, Carlos >> | 27 | 2018 | R | 57 | 8 | 6 | 3.11 | .305 | .00 | 1.36 | 7.6 | 4.6 | 8.9 | 118 | 100 | 5 | 60 | 117 | 0 | 5 | 5 | 65 | 19 | C |
| RP | Hudson, D.Hudson, Dakota >> | 23 | 2018 | R | 58 | 4 | 1 | 2.63 | .289 | .00 | 1.37 | 6.3 | 6.0 | 6.3 | 27 | 19 | 0 | 18 | 19 | 0 | 0 | 2 | 23 | 16 | C |
| SP | Wacha, M.Wacha, Michael >> | 26 | 2018 | R | 72 | 8 | 2 | 3.20 | .284 | .00 | 1.24 | 7.3 | 3.9 | 7.6 | 84 | 68 | 9 | 36 | 71 | 0 | 0 | 2 | 99 | 17 | C |
| SP | Ross, T.Ross, Tyson >> | 31 | 2018 | R | 58 | 8 | 9 | 4.15 | .298 | .00 | 1.30 | 8.0 | 3.7 | 7.4 | 149 | 132 | 17 | 62 | 122 | 0 | 0 | 4 | 86 | 17 | C |
| SP | Flaherty, J.Flaherty, Jack >> | 22 | 2018 | R | 91 | 8 | 9 | 3.34 | .265 | .00 | 1.11 | 6.4 | 3.5 | 10.8 | 151 | 108 | 20 | 59 | 182 | 0 | 0 | 6 | 96 | 21 | C |
| RP | Hicks, J.Hicks, Jordan >> | 21 | 2018 | R | 60 | 3 | 4 | 3.59 | .301 | .00 | 1.35 | 6.9 | 5.3 | 8.2 | 77 | 59 | 2 | 45 | 70 | 0 | 6 | 9 | 23 | 18 | C |
| RP | Norris, B.Norris, Bud >> | 33 | 2018 | R | 61 | 3 | 6 | 3.59 | .285 | .00 | 1.26 | 8.1 | 3.3 | 10.6 | 57 | 51 | 8 | 21 | 67 | 0 | 28 | 9 | 23 | 21 | C |
| RP | Bowman, M.Bowman, Matthew >> | 27 | 2018 | R | 17 | 0 | 2 | 6.26 | .336 | .00 | 1.74 | 11.3 | 4.3 | 10.2 | 23 | 29 | 4 | 11 | 26 | 0 | 0 | 1 | 23 | 23 | C |