| SP | Kershaw, C.Kershaw, Clayton >> | 24 | 2012 | L | 100 | 25 | 25 | 10 | 11 | 2.62 | .265 | 1.06 | 7.0 | 2.5 | 9.8 | 178.1 | 139 | 57 | 52 | 12 | 50 | 193 | 5 | 0 | 0 | 0 | 17 | 4 | 5 | 2.62 |
| SP | Billingsley, C.Billingsley, Chad # >> | 28 | 2012 | R | 59 | 25 | 25 | 6 | 13 | 3.30 | .270 | 1.08 | 7.3 | 2.4 | 7.7 | 163.2 | 133 | 65 | 60 | 22 | 43 | 140 | 1 | 0 | 0 | 1 | 15 | 6 | 2 | 3.94 |
| SP | Delgado, R.Delgado, Randall >> | 22 | 2012 | R | 47 | 25 | 25 | 3 | 14 | 7.40 | .382 | 1.80 | 12.0 | 4.2 | 8.2 | 101.0 | 135 | 85 | 83 | 20 | 47 | 92 | 0 | 0 | 0 | 0 | 3 | 5 | 8 | 5.30 |
| SP | Hanson, T.Hanson, Tommy >> | 25 | 2012 | R | 35 | 23 | 23 | 8 | 9 | 4.45 | .330 | 1.46 | 10.1 | 3.1 | 7.4 | 123.1 | 138 | 66 | 61 | 13 | 42 | 101 | 0 | 0 | 0 | 0 | 11 | 2 | 2 | 3.80 |
| SP | Axelrod, D.Axelrod, Dylan >> | 26 | 2012 | R | 26 | 17 | 17 | 2 | 6 | 4.66 | .314 | 1.37 | 9.3 | 3.2 | 8.1 | 67.2 | 69 | 39 | 35 | 9 | 24 | 60 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4.03 |
| RP | Balfour, G.Balfour, Grant >> | 35 | 2012 | R | 95 | 61 | 0 | 4 | 2 | 1.75 | .286 | 1.19 | 6.5 | 4.2 | 6.8 | 87.1 | 63 | 23 | 17 | 6 | 41 | 66 | 0 | 2 | 3 | 0 | 0 | 1 | 2 | 3.83 |
| RP | Collins, T.Collins, Tim # >> | 22 | 2012 | L | 67 | 61 | 0 | 5 | 6 | 3.98 | .321 | 1.41 | 8.3 | 4.5 | 11.4 | 74.2 | 68 | 36 | 33 | 3 | 37 | 94 | 0 | 3 | 2 | 0 | 0 | 1 | 3 | 2.53 |
| RP | Valverde, J.Valverde, Jose >> | 33 | 2012 | R | 57 | 51 | 0 | 3 | 1 | 3.06 | .349 | 1.61 | 10.3 | 4.3 | 6.8 | 61.2 | 70 | 26 | 21 | 1 | 29 | 46 | 0 | 4 | 0 | 0 | 0 | 0 | 4 | 3.13 |
| RP | Rogers, E.Rogers, Esmil >> | 26 | 2012 | R | 30 | 34 | 0 | 1 | 2 | 3.93 | .313 | 1.37 | 10.3 | 2.1 | 9.0 | 34.1 | 39 | 17 | 15 | 4 | 8 | 34 | 0 | 3 | 1 | 0 | 0 | 0 | 3 | 3.24 |
| RP | Simon, A.Simon, Alfredo >> | 31 | 2012 | R | 27 | 24 | 0 | 1 | 1 | 2.02 | .262 | 1.04 | 5.9 | 3.6 | 8.5 | 35.2 | 23 | 8 | 8 | 2 | 14 | 33 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3.14 |
| SP | Keuchel, D.Keuchel, Dallas >> | 24 | 2012 | L | 16 | 9 | 0 | 1 | 2 | 5.06 | .294 | 1.13 | 7.9 | 2.3 | 6.2 | 16.0 | 14 | 9 | 9 | 3 | 4 | 11 | 0 | 3 | 0 | 0 | 0 | 2 | 0 | 5.19 |