| SP | Flaherty, J.Flaherty, Jack † >> | 22 | 2018 | R | 93 | 34 | 34 | 11 | 12 | 3.42 | .305 | 1.27 | 7.3 | 4.1 | 10.9 | 192.0 | 156 | 74 | 73 | 13 | 88 | 232 | 1 | 0 | 0 | 0 | 17 | 9 | 4 | 2.98 |
| SP | Manaea, S.Manaea, Sean # >> | 26 | 2018 | L | 77 | 33 | 33 | 9 | 15 | 4.71 | .312 | 1.34 | 9.5 | 2.6 | 7.6 | 197.0 | 207 | 109 | 103 | 32 | 56 | 167 | 0 | 0 | 0 | 0 | 16 | 5 | 5 | 4.35 |
| SP | Mikolas, M.Mikolas, Miles # >> | 29 | 2018 | R | 73 | 32 | 32 | 9 | 14 | 4.07 | .298 | 1.25 | 9.3 | 2.0 | 7.4 | 203.1 | 209 | 102 | 92 | 26 | 45 | 168 | 0 | 0 | 0 | 0 | 17 | 5 | 4 | 3.75 |
| SP | Williams, T.Williams, Trevor >> | 26 | 2018 | R | 66 | 32 | 32 | 8 | 13 | 5.97 | .342 | 1.52 | 9.9 | 3.8 | 6.5 | 159.2 | 175 | 113 | 106 | 25 | 67 | 115 | 0 | 0 | 0 | 0 | 11 | 7 | 0 | 4.99 |
| SP | Stripling, R.Stripling, Ross >> | 28 | 2018 | R | 59 | 31 | 31 | 0 | 9 | 5.05 | .361 | 1.65 | 11.4 | 3.5 | 10.3 | 114.0 | 144 | 68 | 64 | 21 | 44 | 130 | 0 | 0 | 0 | 0 | 0 | 5 | 3 | 4.40 |
| RP | Kimbrel, C.Kimbrel, Craig >> | 30 | 2018 | R | 94 | 85 | 0 | 5 | 4 | 2.46 | .270 | 1.06 | 5.1 | 4.5 | 11.7 | 120.2 | 68 | 35 | 33 | 8 | 60 | 156 | 0 | 2 | 4 | 0 | 0 | 6 | 3 | 2.92 |
| RP | Watson, T.Watson, Tony >> | 33 | 2018 | L | 75 | 89 | 0 | 5 | 4 | 3.15 | .296 | 1.21 | 8.3 | 2.7 | 10.3 | 122.2 | 112 | 43 | 43 | 11 | 37 | 139 | 0 | 6 | 4 | 0 | 0 | 6 | 0 | 2.95 |
| RP | Givens, M.Givens, Mychal >> | 28 | 2018 | R | 60 | 80 | 0 | 3 | 5 | 3.12 | .275 | 1.12 | 6.7 | 3.4 | 11.0 | 101.0 | 75 | 37 | 35 | 7 | 38 | 123 | 0 | 4 | 4 | 0 | 0 | 2 | 7 | 2.65 |
| RP | Pagan, E.Pagan, Emilio >> | 27 | 2018 | R | 48 | 69 | 0 | 2 | 8 | 5.53 | .348 | 1.58 | 10.4 | 3.8 | 8.6 | 83.0 | 96 | 53 | 51 | 17 | 35 | 79 | 0 | 5 | 4 | 0 | 0 | 2 | 4 | 5.10 |
| SP | Quintana, J.Quintana, Jose >> | 29 | 2018 | L | 37 | 4 | 0 | 1 | 0 | 0.00 | .211 | 0.80 | 5.4 | 1.8 | 5.4 | 10.0 | 6 | 0 | 0 | 0 | 2 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.40 |