| SP | Gibson, K.Gibson, Kyle >> | 30 | 2018 | R | 56 | 36 | 36 | 7 | 11 | 3.49 | .303 | 1.27 | 7.9 | 3.6 | 9.2 | 219.1 | 192 | 92 | 85 | 26 | 87 | 225 | 0 | 0 | 0 | 0 | 0 | 7 | 5 | 3.78 |
| SP | Odorizzi, J.Odorizzi, Jake >> | 28 | 2018 | R | 50 | 36 | 36 | 9 | 15 | 4.01 | .305 | 1.26 | 8.3 | 3.2 | 9.0 | 197.2 | 181 | 91 | 88 | 23 | 69 | 197 | 0 | 0 | 0 | 0 | 0 | 10 | 3 | 3.72 |
| SP | Stewart, K.Stewart, Kohl >> | 23 | 2018 | R | 31 | 26 | 26 | 5 | 10 | 4.04 | .307 | 1.31 | 7.2 | 4.6 | 8.1 | 124.2 | 99 | 60 | 56 | 18 | 64 | 111 | 0 | 0 | 0 | 0 | 0 | 3 | 14 | 4.72 |
| RP | Rogers, T.Rogers, Taylor >> | 27 | 2018 | L | 88 | 106 | 0 | 7 | 0 | 1.64 | .212 | 0.74 | 4.3 | 2.3 | 11.5 | 77.0 | 37 | 15 | 14 | 5 | 20 | 98 | 0 | 1 | 0 | 0 | 0 | 5 | 0 | 2.27 |
| RP | Hildenberger, T.Hildenberger, Trevor >> | 27 | 2018 | R | 37 | 103 | 0 | 3 | 6 | 3.43 | .305 | 1.29 | 8.0 | 3.7 | 9.4 | 81.1 | 72 | 35 | 31 | 9 | 33 | 85 | 0 | 5 | 4 | 0 | 0 | 2 | 3 | 3.64 |
| RP | Rodney, F.Rodney, Fernando >> | 41 | 2018 | R | 36 | 84 | 0 | 4 | 7 | 2.11 | .273 | 1.13 | 6.2 | 4.0 | 12.2 | 68.1 | 47 | 19 | 16 | 7 | 30 | 92 | 0 | 14 | 3 | 0 | 0 | 0 | 6 | 2.96 |
| RP | Magill, M.Magill, Matt >> | 28 | 2018 | R | 32 | 55 | 0 | 2 | 1 | 2.19 | .313 | 1.33 | 7.8 | 4.2 | 12.9 | 53.1 | 46 | 14 | 13 | 4 | 25 | 76 | 0 | 8 | 3 | 0 | 0 | 2 | 0 | 2.64 |
| RP | Parker, B.Parker, Blake >> | 33 | 2018 | R | 54 | 28 | 0 | 3 | 7 | 3.00 | .260 | 1.03 | 7.0 | 2.3 | 10.8 | 36.0 | 28 | 12 | 12 | 4 | 9 | 43 | 0 | 3 | 2 | 0 | 0 | 1 | 0 | 2.89 |
| RP | Hughes, P.Hughes, Phil >> | 32 | 2018 | R | 9 | 25 | 0 | 1 | 1 | 3.41 | .293 | 1.21 | 7.8 | 3.1 | 8.4 | 29.0 | 25 | 18 | 11 | 6 | 10 | 27 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 4.97 |
| SP | Romero, F.Romero, Fernando >> | 23 | 2018 | R | 21 | 3 | 2 | 0 | 3 | 3.38 | .286 | 1.20 | 8.3 | 2.8 | 8.3 | 13.1 | 12 | 5 | 5 | 2 | 4 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4.08 |