| SP | Martinez, P.Martinez, Pedro | 29 | Warriors | R | 100 | 32 | 32 | 14 | 10 | 4.09 | .286 | 1.18 | 7.9 | 2.7 | 8.9 | 235.2 | 207 | 112 | 107 | 35 | 71 | 232 | 7 | 0 | 0 | 0 | 19 | 5 | 3 | 3.93 |
| SP | Alexander, P.Alexander, Pete | 28 | Homers | R | 88 | 32 | 32 | 14 | 12 | 3.43 | .268 | 1.07 | 7.6 | 2.1 | 4.6 | 244.1 | 205 | 94 | 93 | 23 | 57 | 126 | 5 | 0 | 0 | 3 | 19 | 7 | 5 | 3.98 |
| SP | Arrieta, J.Arrieta, Jake # | 29 | Bombers | R | 93 | 31 | 31 | 14 | 5 | 3.94 | .277 | 1.12 | 8.2 | 1.9 | 8.0 | 178.0 | 162 | 78 | 78 | 28 | 38 | 159 | 2 | 0 | 0 | 2 | 17 | 5 | 2 | 3.98 |
| RP | Kimbrel, C.Kimbrel, Craig | 24 | Bombers | R | 100 | 83 | 0 | 7 | 4 | 2.44 | .236 | 0.92 | 5.4 | 2.9 | 9.4 | 121.2 | 73 | 33 | 33 | 8 | 39 | 126 | 0 | 14 | 4 | 0 | 0 | 1 | 13 | 2.77 |
| RP | Gregerson, L.Gregerson, Luke | 26 | Frogs | R | 73 | 74 | 0 | 6 | 3 | 2.33 | .255 | 0.97 | 6.5 | 2.3 | 8.6 | 88.2 | 64 | 25 | 23 | 5 | 22 | 84 | 0 | 11 | 2 | 0 | 0 | 5 | 0 | 2.75 |
| CL | Betances, D.Betances, Dellin | 26 | Monarchs | R | 94 | 84 | 0 | 5 | 4 | 3.45 | .296 | 1.26 | 7.2 | 4.2 | 9.2 | 91.1 | 73 | 35 | 35 | 9 | 42 | 93 | 0 | 48 | 7 | 0 | 0 | 0 | 2 | 3.63 |
| CL | Chapman, A.Chapman, Aroldis | 26 | Homers | L | 93 | 54 | 0 | 1 | 2 | 3.70 | .311 | 1.29 | 6.9 | 4.9 | 9.0 | 48.2 | 37 | 23 | 20 | 7 | 26 | 48 | 0 | 41 | 6 | 0 | 0 | 3 | 1 | 4.71 |