| SP | Kluber, C.Kluber, Corey >> | 31 | 2017 | R | 89 | 12 | 12 | 6 | 4 | 4.32 | .298 | 1.25 | 9.0 | 2.3 | 9.3 | 83.1 | 83 | 43 | 40 | 10 | 21 | 86 | 2 | 0 | 0 | 2 | 6 | 2 | 1 | 3.33 |
| SP | Mathewson, C.Mathewson, Christy >> | 28 | 1908 | R | 82 | 12 | 12 | 4 | 4 | 4.94 | .307 | 1.28 | 9.3 | 2.2 | 4.8 | 78.1 | 81 | 44 | 43 | 8 | 19 | 42 | 3 | 0 | 0 | 0 | 6 | 4 | 1 | 4.14 |
| SP | Fernandez, J.Fernandez, Jose >> | 21 | 2013 | R | 76 | 12 | 12 | 9 | 1 | 2.52 | .270 | 1.07 | 5.8 | 3.8 | 8.5 | 82.0 | 53 | 23 | 23 | 7 | 35 | 77 | 1 | 0 | 0 | 0 | 8 | 3 | 2 | 3.62 |
| SP | Reulbach, E.Reulbach, Ed >> | 24 | 1906 | R | 61 | 12 | 11 | 3 | 5 | 5.63 | .339 | 1.52 | 8.5 | 5.3 | 4.5 | 70.1 | 66 | 47 | 44 | 7 | 41 | 35 | 0 | 0 | 0 | 0 | 5 | 1 | 1 | 5.10 |
| RP | Feliz, N.Feliz, Neftali >> | 21 | 2009 | R | 97 | 31 | 0 | 2 | 2 | 2.61 | .253 | 1.01 | 5.8 | 3.4 | 9.8 | 48.1 | 31 | 14 | 14 | 5 | 18 | 52 | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 3.31 |
| RP | Treinen, B.Treinen, Blake >> | 30 | 2018 | R | 79 | 21 | 0 | 2 | 1 | 1.37 | .210 | 0.76 | 5.2 | 1.7 | 7.6 | 26.1 | 15 | 5 | 4 | 1 | 5 | 22 | 0 | 5 | 0 | 0 | 0 | 1 | 3 | 2.50 |
| RP | Balfour, G.Balfour, Grant >> | 31 | 2008 | R | 74 | 18 | 0 | 0 | 1 | 4.24 | .329 | 1.35 | 8.5 | 3.7 | 10.1 | 17.0 | 16 | 9 | 8 | 4 | 7 | 19 | 0 | 4 | 1 | 0 | 0 | 2 | 0 | 5.41 |
| RP | Gregerson, L.Gregerson, Luke >> | 26 | 2010 | R | 73 | 10 | 0 | 0 | 1 | 1.93 | .236 | 0.86 | 5.1 | 2.6 | 9.0 | 14.0 | 8 | 3 | 3 | 1 | 4 | 14 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3.00 |
| RP | Messersmith, A.Messersmith, Andy >> | 23 | 1968 | R | 57 | 11 | 0 | 3 | 0 | 1.66 | .301 | 1.20 | 4.7 | 6.4 | 3.0 | 21.2 | 11 | 6 | 4 | 1 | 15 | 7 | 0 | 1 | 0 | 0 | 0 | 2 | 1 | 5.38 |
| SP | Fernandez, S.Fernandez, Sid >> | 23 | 1985 | L | 49 | 11 | 0 | 0 | 1 | 3.29 | .320 | 1.39 | 7.9 | 4.6 | 7.9 | 41.0 | 36 | 15 | 15 | 3 | 21 | 36 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3.80 |