| SP | Cole, G.Cole, Gerrit # >> | 28 | 2019 | R | 97 | 25 | 25 | 8 | 8 | 5.91 | .330 | 1.43 | 10.3 | 2.6 | 10.9 | 149.1 | 171 | 103 | 98 | 29 | 43 | 181 | 1 | 0 | 0 | 0 | 8 | 7 | 1 | 4.11 |
| SP | Darvish, Y.Darvish, Yu >> | 26 | 2013 | R | 78 | 24 | 24 | 6 | 11 | 4.80 | .309 | 1.33 | 8.4 | 3.7 | 11.0 | 155.2 | 144 | 86 | 83 | 24 | 63 | 189 | 1 | 0 | 0 | 1 | 12 | 2 | 6 | 3.83 |
| SP | Lester, J.Lester, Jon # >> | 32 | 2016 | L | 77 | 24 | 24 | 8 | 10 | 4.40 | .310 | 1.32 | 9.4 | 2.5 | 7.9 | 157.1 | 164 | 79 | 77 | 17 | 44 | 137 | 1 | 0 | 0 | 1 | 15 | 4 | 1 | 3.58 |
| SP | Shields, J.Shields, James >> | 30 | 2011 | R | 62 | 23 | 23 | 8 | 10 | 6.51 | .347 | 1.59 | 10.0 | 4.4 | 7.9 | 142.1 | 158 | 107 | 103 | 29 | 69 | 124 | 5 | 0 | 0 | 2 | 8 | 0 | 7 | 5.37 |
| RP | Jansen, K.Jansen, Kenley >> | 28 | 2016 | R | 98 | 58 | 0 | 7 | 4 | 2.81 | .254 | 1.00 | 6.4 | 2.6 | 12.3 | 83.1 | 59 | 26 | 26 | 7 | 24 | 113 | 0 | 4 | 2 | 0 | 0 | 2 | 0 | 2.31 |
| RP | Hochevar, L.Hochevar, Luke >> | 30 | 2013 | R | 79 | 61 | 0 | 7 | 8 | 4.52 | .321 | 1.42 | 8.8 | 4.1 | 9.5 | 77.2 | 75 | 41 | 39 | 9 | 35 | 81 | 0 | 3 | 3 | 0 | 0 | 0 | 0 | 3.78 |
| RP | Workman, B.Workman, Brandon >> | 30 | 2019 | R | 58 | 45 | 0 | 4 | 1 | 5.09 | .372 | 1.74 | 7.1 | 8.5 | 11.7 | 53.0 | 42 | 30 | 30 | 5 | 50 | 69 | 0 | 2 | 1 | 0 | 0 | 2 | 3 | 4.57 |
| RP | Papelbon, J.Papelbon, Jonathan >> | 34 | 2014 | R | 45 | 52 | 0 | 1 | 1 | 3.92 | .284 | 1.16 | 6.9 | 3.7 | 7.6 | 59.2 | 45 | 29 | 26 | 8 | 24 | 50 | 0 | 6 | 2 | 0 | 0 | 2 | 0 | 4.39 |
| RP | Smith, C.Smith, Carson >> | 25 | 2015 | R | 35 | 32 | 0 | 1 | 1 | 4.20 | .307 | 1.30 | 8.1 | 3.8 | 10.1 | 40.2 | 36 | 19 | 19 | 4 | 17 | 45 | 0 | 1 | 2 | 0 | 0 | 1 | 0 | 3.40 |
| SP | Salazar, D.Salazar, Danny >> | 25 | 2015 | R | 36 | 2 | 0 | 0 | 1 | 33.75 | .636 | 5.25 | 54.0 | 9.0 | 9.0 | 1.1 | 6 | 5 | 5 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.00 |