| SP | Ohtani, S.Ohtani, Shohei >> | 23 | 2018 | R | 85 | 33 | 33 | 15 | 9 | 3.17 | .240 | 0.92 | 5.7 | 2.6 | 11.0 | 184.2 | 116 | 66 | 65 | 13 | 53 | 224 | 1 | 0 | 0 | 1 | 0 | 6 | 5 | 2.45 |
| SP | Richards, G.Richards, Garrett >> | 30 | 2018 | R | 68 | 33 | 33 | 11 | 10 | 2.85 | .282 | 1.16 | 6.4 | 4.1 | 9.9 | 177.0 | 125 | 57 | 56 | 11 | 80 | 194 | 1 | 0 | 0 | 1 | 0 | 4 | 10 | 3.04 |
| SP | Shoemaker, M.Shoemaker, Matt >> | 31 | 2018 | R | 63 | 32 | 32 | 7 | 7 | 3.31 | .295 | 1.24 | 8.0 | 3.2 | 8.7 | 157.2 | 139 | 58 | 58 | 15 | 56 | 152 | 0 | 0 | 0 | 0 | 0 | 3 | 6 | 3.43 |
| SP | Heaney, A.Heaney, Andrew >> | 27 | 2018 | L | 63 | 32 | 32 | 10 | 12 | 3.35 | .288 | 1.18 | 8.1 | 2.6 | 10.1 | 193.1 | 173 | 74 | 72 | 19 | 56 | 217 | 0 | 0 | 0 | 0 | 0 | 6 | 8 | 2.99 |
| SP | Barria, J.Barria, Jaime # >> | 21 | 2018 | R | 57 | 32 | 32 | 10 | 14 | 4.94 | .327 | 1.42 | 9.9 | 2.9 | 7.9 | 147.2 | 162 | 81 | 81 | 18 | 47 | 129 | 0 | 0 | 0 | 0 | 0 | 6 | 3 | 3.92 |
| RP | Alvarez, J.Alvarez, Jose >> | 29 | 2018 | L | 69 | 102 | 0 | 3 | 5 | 2.43 | .241 | 0.93 | 6.1 | 2.3 | 9.4 | 89.0 | 60 | 25 | 24 | 4 | 23 | 93 | 0 | 2 | 4 | 0 | 0 | 2 | 0 | 2.34 |
| RP | Ramirez, N.Ramirez, Noe >> | 28 | 2018 | R | 56 | 86 | 0 | 3 | 6 | 4.37 | .292 | 1.21 | 8.2 | 2.7 | 10.8 | 117.1 | 107 | 58 | 57 | 12 | 35 | 140 | 0 | 8 | 6 | 0 | 0 | 3 | 5 | 2.91 |
| RP | Parker, B.Parker, Blake >> | 33 | 2018 | R | 54 | 71 | 0 | 5 | 5 | 2.32 | .256 | 1.02 | 7.2 | 2.0 | 10.5 | 93.0 | 74 | 30 | 24 | 11 | 21 | 108 | 0 | 12 | 2 | 0 | 0 | 1 | 6 | 2.92 |
| RP | Anderson, J.Anderson, Justin >> | 25 | 2018 | R | 52 | 50 | 0 | 5 | 2 | 2.14 | .315 | 1.37 | 6.7 | 5.6 | 10.7 | 63.0 | 47 | 20 | 15 | 4 | 39 | 75 | 0 | 3 | 2 | 0 | 0 | 1 | 3 | 3.35 |
| RP | Robles, H.Robles, Hansel >> | 27 | 2018 | R | 42 | 36 | 0 | 3 | 2 | 0.97 | .236 | 0.93 | 4.7 | 3.7 | 10.6 | 46.1 | 24 | 7 | 5 | 2 | 19 | 54 | 0 | 3 | 1 | 0 | 0 | 0 | 1 | 2.46 |
| RP | Bedrosian, C.Bedrosian, Cam >> | 26 | 2018 | R | 36 | 36 | 0 | 4 | 0 | 2.08 | .255 | 0.99 | 5.9 | 3.1 | 6.1 | 47.2 | 31 | 11 | 11 | 4 | 16 | 32 | 0 | 2 | 1 | 0 | 0 | 2 | 1 | 3.89 |