| SP | Ohtani, S.Ohtani, Shohei † + >> | 23 | 2018 | R | 91 | 31 | 31 | 14 | 5 | 3.03 | .297 | 1.23 | 7.6 | 3.5 | 10.6 | 172.0 | 145 | 58 | 58 | 14 | 66 | 202 | 0 | 0 | 0 | 0 | 11 | 7 | 9 | 2.98 |
| SP | Shoemaker, M.Shoemaker, Matt >> | 31 | 2018 | R | 66 | 30 | 30 | 5 | 8 | 5.02 | .336 | 1.49 | 10.1 | 3.3 | 11.4 | 136.1 | 153 | 82 | 76 | 20 | 50 | 173 | 0 | 0 | 0 | 0 | 2 | 4 | 10 | 3.56 |
| SP | Barria, J.Barria, Jaime + >> | 21 | 2018 | R | 59 | 28 | 28 | 10 | 6 | 4.32 | .326 | 1.41 | 9.1 | 3.7 | 7.7 | 143.2 | 145 | 69 | 69 | 22 | 58 | 123 | 0 | 0 | 0 | 0 | 7 | 5 | 7 | 4.60 |
| SP | Shields, J.Shields, James >> | 37 | 2018 | R | 50 | 28 | 27 | 12 | 6 | 4.31 | .342 | 1.53 | 9.5 | 4.4 | 7.9 | 160.2 | 168 | 78 | 77 | 19 | 78 | 140 | 1 | 0 | 0 | 0 | 14 | 4 | 1 | 4.33 |
| RP | Watson, T.Watson, Tony † >> | 33 | 2018 | L | 86 | 82 | 0 | 7 | 4 | 2.16 | .254 | 0.99 | 6.2 | 2.7 | 11.0 | 112.2 | 77 | 33 | 27 | 5 | 34 | 137 | 0 | 4 | 0 | 0 | 0 | 4 | 0 | 2.15 |
| RP | Carle, S.Carle, Shane + >> | 26 | 2018 | R | 68 | 72 | 0 | 9 | 1 | 3.18 | .315 | 1.34 | 8.0 | 4.1 | 6.9 | 82.0 | 73 | 31 | 29 | 7 | 37 | 63 | 0 | 0 | 2 | 0 | 0 | 3 | 1 | 4.04 |
| RP | Buttrey, T.Buttrey, Ty + >> | 25 | 2018 | R | 66 | 66 | 0 | 12 | 0 | 3.00 | .306 | 1.29 | 8.3 | 3.3 | 9.9 | 84.0 | 77 | 28 | 28 | 5 | 31 | 92 | 0 | 5 | 3 | 0 | 0 | 3 | 0 | 2.80 |
| RP | Ramirez, N.Ramirez, Noe + >> | 28 | 2018 | R | 64 | 41 | 0 | 5 | 2 | 2.84 | .286 | 1.18 | 7.9 | 2.9 | 11.0 | 50.2 | 44 | 16 | 16 | 3 | 16 | 61 | 0 | 2 | 3 | 0 | 0 | 1 | 0 | 2.36 |
| CL | O'Day, D.O'Day, Darren # >> | 36 | 2018 | R | 80 | 70 | 0 | 2 | 6 | 3.63 | .314 | 1.31 | 9.7 | 2.1 | 10.5 | 67.0 | 72 | 30 | 27 | 13 | 16 | 78 | 0 | 40 | 5 | 0 | 0 | 4 | 0 | 4.09 |