| SP | Manaea, S.Manaea, Sean † >> | 27 | 2019 | L | 99 | 40 | 40 | 21 | 10 | 3.61 | .278 | 1.14 | 7.3 | 2.9 | 10.1 | 254.0 | 206 | 107 | 102 | 34 | 83 | 284 | 2 | 0 | 0 | 1 | 25 | 5 | 5 | 3.54 |
| SP | Gonzalez, G.Gonzalez, Gio >> | 34 | 2019 | L | 63 | 38 | 38 | 11 | 16 | 4.75 | .320 | 1.36 | 8.0 | 4.3 | 9.0 | 182.0 | 161 | 100 | 96 | 27 | 87 | 181 | 0 | 0 | 0 | 0 | 4 | 9 | 3 | 4.52 |
| SP | Mengden, D.Mengden, Daniel # >> | 26 | 2019 | R | 31 | 36 | 33 | 5 | 13 | 5.78 | .337 | 1.49 | 9.7 | 3.8 | 7.9 | 157.1 | 169 | 101 | 101 | 28 | 66 | 138 | 0 | 0 | 0 | 0 | 4 | 5 | 1 | 4.92 |
| CL | Wendelken, J.Wendelken, J.B. † >> | 26 | 2019 | R | 95 | 88 | 0 | 3 | 3 | 3.10 | .286 | 1.17 | 7.1 | 3.4 | 10.9 | 90.0 | 71 | 32 | 31 | 11 | 34 | 109 | 0 | 49 | 10 | 0 | 0 | 3 | 3 | 3.40 |
| RP | Wittgren, N.Wittgren, Nick >> | 28 | 2019 | R | 83 | 112 | 0 | 8 | 5 | 3.60 | .283 | 1.14 | 7.0 | 3.3 | 10.9 | 132.1 | 103 | 56 | 53 | 14 | 48 | 160 | 0 | 2 | 3 | 0 | 0 | 6 | 0 | 3.18 |
| RP | Swanson, E.Swanson, Erik >> | 25 | 2019 | R | 63 | 90 | 0 | 15 | 4 | 4.18 | .310 | 1.32 | 9.2 | 2.7 | 8.7 | 131.1 | 134 | 64 | 61 | 16 | 39 | 126 | 0 | 3 | 2 | 0 | 0 | 4 | 3 | 3.65 |
| RP | Doolittle, S.Doolittle, Sean >> | 32 | 2019 | L | 53 | 123 | 0 | 7 | 3 | 4.66 | .338 | 1.49 | 10.1 | 3.3 | 10.9 | 102.1 | 115 | 57 | 53 | 17 | 37 | 124 | 0 | 0 | 5 | 0 | 0 | 5 | 0 | 3.97 |