| SP | Chamberlain, E.Chamberlain, Elton >> | 21 | 1888 | R | 98 | 38 | 38 | 21 | 8 | 3.51 | .279 | 1.14 | 7.4 | 2.8 | 4.9 | 312.2 | 258 | 127 | 122 | 23 | 98 | 169 | 22 | 0 | 0 | 3 | 21 | 7 | 0 | 3.88 |
| SP | Flaherty, J.Flaherty, Jack >> | 23 | 2019 | R | 88 | 37 | 37 | 23 | 7 | 3.59 | .289 | 1.17 | 7.2 | 3.3 | 8.1 | 238.1 | 191 | 97 | 95 | 18 | 87 | 214 | 0 | 0 | 0 | 0 | 21 | 12 | 3 | 3.43 |
| SP | Hughes, D.Hughes, Dick >> | 29 | 1967 | R | 84 | 34 | 34 | 17 | 7 | 3.81 | .289 | 1.19 | 8.3 | 2.4 | 5.8 | 226.2 | 209 | 99 | 96 | 24 | 60 | 146 | 1 | 0 | 0 | 1 | 21 | 7 | 5 | 3.98 |
| SP | Pollet, H.Pollet, Howie † # >> | 22 | 1943 | L | 78 | 32 | 32 | 19 | 10 | 4.24 | .297 | 1.25 | 8.3 | 2.9 | 5.6 | 240.0 | 222 | 113 | 113 | 25 | 77 | 148 | 15 | 0 | 0 | 2 | 19 | 5 | 2 | 4.15 |
| RP | Helsley, R.Helsley, Ryan >> | 27 | 2022 | R | 100 | 77 | 0 | 7 | 6 | 2.48 | .280 | 1.15 | 6.3 | 4.1 | 8.2 | 83.1 | 58 | 23 | 23 | 7 | 38 | 76 | 0 | 4 | 7 | 0 | 0 | 1 | 2 | 3.67 |
| RP | Siegrist, K.Siegrist, Kevin >> | 23 | 2013 | L | 85 | 71 | 0 | 3 | 2 | 3.00 | .250 | 1.00 | 4.6 | 4.4 | 8.7 | 57.0 | 29 | 21 | 19 | 3 | 28 | 55 | 0 | 3 | 2 | 0 | 0 | 0 | 0 | 3.23 |
| RP | Calero, K.Calero, Kiko >> | 29 | 2004 | R | 80 | 34 | 0 | 3 | 2 | 1.61 | .250 | 1.00 | 5.1 | 3.9 | 9.3 | 28.0 | 16 | 5 | 5 | 2 | 12 | 29 | 0 | 6 | 2 | 0 | 0 | 0 | 0 | 3.14 |
| RP | Gallegos, G.Gallegos, Giovanny >> | 29 | 2021 | R | 72 | 16 | 0 | 3 | 1 | 4.50 | .349 | 1.56 | 8.5 | 5.5 | 9.0 | 18.0 | 17 | 9 | 9 | 1 | 11 | 18 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 3.72 |
| RP | Thompson, Z.Thompson, Zack >> | 24 | 2022 | L | 60 | 54 | 0 | 2 | 1 | 2.45 | .274 | 1.11 | 6.5 | 3.6 | 5.2 | 47.2 | 34 | 16 | 13 | 3 | 19 | 27 | 0 | 9 | 1 | 0 | 0 | 1 | 3 | 3.96 |