| SP | Berrios, J.Berrios, Jose >> | 24 | 2018 | R | 82 | 35 | 35 | 10 | 11 | 4.92 | .348 | 1.58 | 10.1 | 4.1 | 9.3 | 199.1 | 224 | 111 | 109 | 29 | 90 | 206 | 0 | 0 | 0 | 0 | 15 | 5 | 3 | 4.26 |
| SP | Carrasco, C.Carrasco, Carlos >> | 31 | 2018 | R | 81 | 34 | 34 | 14 | 6 | 4.28 | .310 | 1.29 | 9.4 | 2.3 | 11.1 | 199.2 | 208 | 97 | 95 | 19 | 50 | 245 | 0 | 0 | 0 | 0 | 18 | 11 | 5 | 2.70 |
| SP | Morton, C.Morton, Charlie >> | 35 | 2018 | R | 86 | 33 | 33 | 13 | 9 | 4.63 | .326 | 1.42 | 9.0 | 3.9 | 11.3 | 180.2 | 180 | 96 | 93 | 27 | 77 | 226 | 0 | 0 | 0 | 0 | 14 | 5 | 2 | 3.81 |
| SP | Cueto, J.Cueto, Johnny # >> | 32 | 2018 | R | 75 | 31 | 31 | 17 | 10 | 4.16 | .311 | 1.34 | 9.2 | 2.9 | 7.2 | 192.1 | 196 | 89 | 89 | 27 | 61 | 153 | 0 | 0 | 0 | 0 | 20 | 4 | 5 | 4.25 |
| RP | Hernandez, D.Hernandez, David >> | 33 | 2018 | R | 86 | 82 | 0 | 4 | 5 | 4.06 | .279 | 1.14 | 6.7 | 3.6 | 8.8 | 119.2 | 88 | 56 | 54 | 17 | 48 | 117 | 0 | 1 | 6 | 0 | 0 | 3 | 6 | 4.18 |
| RP | Robertson, D.Robertson, David >> | 33 | 2018 | R | 89 | 55 | 0 | 5 | 4 | 3.33 | .296 | 1.24 | 6.3 | 4.8 | 11.2 | 54.0 | 38 | 20 | 20 | 2 | 29 | 67 | 0 | 3 | 1 | 0 | 0 | 1 | 1 | 2.67 |
| RP | Osuna, R.Osuna, Roberto >> | 23 | 2018 | R | 72 | 38 | 0 | 3 | 1 | 3.13 | .287 | 1.18 | 8.8 | 1.9 | 7.8 | 37.1 | 36 | 16 | 13 | 6 | 8 | 32 | 0 | 1 | 0 | 0 | 0 | 1 | 5 | 4.11 |
| RP | Trivino, L.Trivino, Lou >> | 26 | 2018 | R | 72 | 34 | 0 | 0 | 0 | 3.63 | .304 | 1.26 | 7.4 | 4.2 | 11.1 | 39.2 | 32 | 16 | 16 | 4 | 18 | 48 | 0 | 0 | 0 | 0 | 0 | 2 | 3 | 3.41 |
| CL | Doolittle, S.Doolittle, Sean † >> | 31 | 2018 | L | 100 | 68 | 0 | 4 | 7 | 2.04 | .254 | 0.96 | 6.3 | 2.4 | 10.7 | 70.2 | 49 | 16 | 16 | 6 | 19 | 83 | 0 | 41 | 3 | 0 | 0 | 4 | 0 | 2.73 |