| SP | Ohtani, S.Ohtani, Shohei >> | 23 | 2018 | R | 85 | 38 | 38 | 17 | 10 | 1.79 | .223 | 0.83 | 5.0 | 2.6 | 11.1 | 236.0 | 130 | 48 | 47 | 17 | 67 | 290 | 1 | 0 | 0 | 1 | 0 | 6 | 12 | 2.41 |
| SP | Barria, J.Barria, Jaime >> | 21 | 2018 | R | 57 | 36 | 36 | 13 | 16 | 3.82 | .313 | 1.34 | 8.7 | 3.4 | 9.3 | 191.0 | 184 | 91 | 81 | 17 | 72 | 197 | 0 | 0 | 0 | 0 | 0 | 5 | 6 | 3.30 |
| SP | Heaney, A.Heaney, Andrew >> | 27 | 2018 | L | 63 | 34 | 34 | 15 | 8 | 2.73 | .270 | 1.08 | 7.0 | 2.7 | 11.2 | 221.0 | 172 | 77 | 67 | 20 | 67 | 274 | 2 | 0 | 0 | 0 | 0 | 6 | 5 | 2.69 |
| SP | Pena, F.Pena, Felix >> | 28 | 2018 | R | 59 | 31 | 31 | 9 | 11 | 4.75 | .292 | 1.23 | 8.5 | 2.5 | 8.4 | 157.1 | 149 | 87 | 83 | 29 | 44 | 147 | 0 | 0 | 0 | 0 | 0 | 2 | 7 | 4.41 |
| SP | Harvey, M.Harvey, Matt >> | 29 | 2018 | R | 37 | 22 | 22 | 5 | 6 | 4.40 | .297 | 1.23 | 8.5 | 2.6 | 8.4 | 114.2 | 108 | 59 | 56 | 15 | 33 | 107 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 3.81 |
| RP | Alvarez, J.Alvarez, Jose >> | 29 | 2018 | L | 69 | 116 | 0 | 2 | 1 | 3.43 | .261 | 1.04 | 6.2 | 3.2 | 8.8 | 86.2 | 59 | 36 | 33 | 5 | 31 | 84 | 0 | 0 | 4 | 0 | 0 | 2 | 2 | 2.95 |
| RP | Cole, T.Cole, Taylor † >> | 28 | 2018 | R | 93 | 72 | 0 | 5 | 1 | 1.39 | .183 | 0.66 | 3.7 | 2.3 | 12.5 | 123.1 | 50 | 22 | 19 | 9 | 31 | 171 | 0 | 8 | 1 | 0 | 0 | 2 | 0 | 1.98 |
| RP | Ramirez, N.Ramirez, Noe >> | 28 | 2018 | R | 55 | 72 | 0 | 5 | 4 | 3.77 | .283 | 1.17 | 6.8 | 3.8 | 10.8 | 98.0 | 74 | 45 | 41 | 10 | 41 | 118 | 0 | 10 | 3 | 0 | 0 | 1 | 3 | 3.20 |
| RP | Allen, C.Allen, Cody >> | 29 | 2018 | R | 53 | 52 | 0 | 7 | 4 | 2.96 | .295 | 1.24 | 6.4 | 4.7 | 11.6 | 67.0 | 48 | 24 | 22 | 3 | 35 | 86 | 0 | 8 | 5 | 0 | 0 | 1 | 3 | 2.63 |
| RP | Anderson, J.Anderson, Justin >> | 25 | 2018 | R | 52 | 39 | 0 | 4 | 4 | 1.95 | .245 | 0.96 | 4.6 | 4.1 | 11.1 | 55.1 | 28 | 13 | 12 | 2 | 25 | 68 | 0 | 4 | 1 | 0 | 0 | 1 | 7 | 2.42 |
| SP | Cahill, T.Cahill, Trevor >> | 30 | 2018 | R | 75 | 1 | 1 | 0 | 1 | 4.76 | .320 | 1.41 | 12.6 | 1.8 | 7.2 | 5.2 | 7 | 3 | 3 | 1 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.60 |
| SP | Tropeano, N.Tropeano, Nick >> | 27 | 2018 | R | 56 | 0 | 0 | 0 | 0 | - | .000 | - | - | - | - | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| RP | Robles, H.Robles, Hansel >> | 27 | 2018 | R | 42 | 30 | 0 | 1 | 1 | 1.98 | .268 | 1.05 | 6.5 | 3.0 | 10.3 | 36.1 | 26 | 8 | 8 | 4 | 12 | 41 | 0 | 3 | 0 | 0 | 0 | 2 | 2 | 3.33 |
| RP | Johnson, J.Johnson, Jim >> | 35 | 2018 | R | 35 | 19 | 0 | 1 | 2 | 5.79 | .364 | 1.66 | 11.0 | 4.5 | 8.0 | 18.2 | 22 | 14 | 12 | 4 | 9 | 16 | 0 | 2 | 3 | 0 | 0 | 1 | 0 | 5.78 |
| SP | Skaggs, T.Skaggs, Tyler >> | 26 | 2018 | L | 42 | 1 | 0 | 1 | 0 | 0.00 | .263 | 1.07 | 6.8 | 4.5 | 11.3 | 4.2 | 3 | 0 | 0 | 0 | 2 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.00 |
| RP | Bedrosian, C.Bedrosian, Cam >> | 26 | 2018 | R | 36 | 16 | 0 | 0 | 2 | 1.00 | .229 | 0.81 | 5.3 | 2.0 | 9.0 | 27.0 | 16 | 3 | 3 | 2 | 6 | 27 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 2.85 |
| RP | McGuire, D.McGuire, Deck >> | 29 | 2018 | R | 20 | 33 | 0 | 5 | 1 | 2.55 | .260 | 1.03 | 5.1 | 4.2 | 8.4 | 49.1 | 28 | 15 | 14 | 3 | 23 | 46 | 0 | 3 | 0 | 0 | 0 | 1 | 1 | 3.39 |