| SP | Kluber, C.Kluber, Corey # >> | 31 | 2017 | R | 96 | 13 | 13 | 6 | 6 | 3.27 | .281 | 1.16 | 8.7 | 1.8 | 10.2 | 96.1 | 93 | 39 | 35 | 11 | 19 | 109 | 4 | 0 | 0 | 0 | 10 | 1 | 0 | 2.84 |
| SP | Hamels, C.Hamels, Cole >> | 28 | 2011 | L | 79 | 12 | 12 | 4 | 7 | 4.84 | .331 | 1.48 | 10.0 | 3.3 | 7.3 | 80.0 | 89 | 48 | 43 | 14 | 29 | 65 | 0 | 0 | 0 | 0 | 6 | 1 | 0 | 4.78 |
| SP | Shields, J.Shields, James >> | 30 | 2011 | R | 62 | 12 | 12 | 6 | 5 | 3.83 | .292 | 1.20 | 7.2 | 3.8 | 7.4 | 84.2 | 67 | 37 | 36 | 9 | 35 | 69 | 4 | 0 | 0 | 1 | 8 | 3 | 0 | 4.11 |
| SP | Paxton, J.Paxton, James >> | 29 | 2018 | L | 45 | 12 | 12 | 2 | 5 | 4.40 | .298 | 1.28 | 8.4 | 3.2 | 10.2 | 73.2 | 68 | 37 | 36 | 13 | 26 | 83 | 0 | 0 | 0 | 0 | 6 | 0 | 6 | 4.11 |
| RP | Parker, B.Parker, Blake >> | 32 | 2017 | R | 79 | 25 | 0 | 0 | 1 | 3.56 | .266 | 0.99 | 5.7 | 3.3 | 11.4 | 30.1 | 19 | 12 | 12 | 6 | 11 | 38 | 0 | 2 | 2 | 0 | 0 | 3 | 0 | 4.47 |
| RP | Ottavino, A.Ottavino, Adam >> | 32 | 2018 | R | 59 | 17 | 0 | 2 | 3 | 6.00 | .348 | 1.60 | 9.0 | 5.4 | 12.0 | 15.0 | 15 | 10 | 10 | 5 | 9 | 20 | 0 | 1 | 1 | 0 | 0 | 0 | 3 | 6.47 |
| RP | Papelbon, J.Papelbon, Jonathan >> | 34 | 2014 | R | 44 | 15 | 0 | 1 | 0 | 4.32 | .286 | 1.20 | 9.0 | 2.3 | 9.6 | 16.2 | 16 | 8 | 8 | 3 | 4 | 17 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 4.06 |
| SP | Berrios, J.Berrios, Jose >> | 24 | 2018 | R | 34 | 0 | 0 | 0 | 0 | - | .000 | - | - | - | - | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| SP | Kennedy, I.Kennedy, Ian >> | 27 | 2011 | R | 43 | 8 | 0 | 1 | 1 | 10.29 | .475 | 2.71 | 16.7 | 7.7 | 6.4 | 7.0 | 13 | 8 | 8 | 4 | 6 | 5 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 11.57 |