| SP | Beachy, B.Beachy, Brandon >> | 25 | 2012 | R | 99 | 17 | 17 | 6 | 6 | 3.48 | .318 | 1.36 | 7.6 | 4.6 | 7.6 | 106.0 | 90 | 42 | 41 | 3 | 54 | 89 | 1 | 0 | 0 | 0 | 10 | 4 | 5 | 3.33 |
| SP | Hudson, T.Hudson, Tim # >> | 37 | 2012 | R | 51 | 16 | 16 | 6 | 7 | 4.30 | .319 | 1.39 | 8.9 | 3.6 | 6.6 | 92.0 | 91 | 47 | 44 | 6 | 37 | 67 | 0 | 0 | 0 | 0 | 11 | 1 | 0 | 3.63 |
| SP | Maholm, P.Maholm, Paul # >> | 30 | 2012 | L | 49 | 13 | 13 | 4 | 3 | 4.22 | .295 | 1.22 | 9.0 | 1.9 | 5.6 | 79.0 | 79 | 38 | 37 | 5 | 17 | 49 | 0 | 0 | 0 | 0 | 8 | 3 | 0 | 3.34 |
| CL | Kimbrel, C.Kimbrel, Craig >> | 24 | 2012 | R | 100 | 30 | 0 | 2 | 2 | 2.10 | .204 | 0.77 | 4.5 | 2.4 | 8.4 | 30.0 | 15 | 7 | 7 | 2 | 8 | 28 | 0 | 18 | 0 | 0 | 0 | 0 | 1 | 2.80 |
| SU | Soria, J.Soria, Joakim >> | 23 | 2007 | R | 88 | 34 | 0 | 0 | 1 | 2.13 | .245 | 0.97 | 6.4 | 2.4 | 9.9 | 38.0 | 27 | 11 | 9 | 2 | 10 | 42 | 0 | 1 | 3 | 0 | 0 | 0 | 2 | 2.26 |
| RP | Medlen, K.Medlen, Kris >> | 26 | 2012 | R | 81 | 35 | 0 | 5 | 0 | 2.34 | .240 | 0.92 | 6.6 | 1.7 | 7.3 | 42.1 | 31 | 11 | 11 | 2 | 8 | 34 | 0 | 2 | 0 | 0 | 0 | 1 | 2 | 2.64 |
| RP | Gearrin, C.Gearrin, Cory >> | 26 | 2012 | R | 58 | 35 | 0 | 0 | 0 | 3.56 | .260 | 1.05 | 7.5 | 2.1 | 8.1 | 30.1 | 25 | 12 | 12 | 2 | 7 | 27 | 0 | 2 | 0 | 0 | 0 | 0 | 3 | 2.77 |
| RP | Avilan, L.Avilan, Luis >> | 22 | 2012 | L | 75 | 38 | 0 | 2 | 1 | 2.76 | .267 | 1.09 | 8.1 | 1.9 | 8.7 | 29.1 | 26 | 12 | 9 | 2 | 6 | 28 | 0 | 1 | 0 | 0 | 0 | 0 | 4 | 2.59 |
| RP | O'Flaherty, E.O'Flaherty, Eric >> | 27 | 2012 | L | 49 | 13 | 0 | 3 | 0 | 2.25 | .385 | 1.88 | 12.4 | 4.5 | 10.1 | 8.0 | 11 | 2 | 2 | 0 | 4 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.25 |
| RP | Martinez, C.Martinez, Cristhian >> | 30 | 2012 | R | 17 | 8 | 0 | 1 | 1 | 5.87 | .303 | 1.30 | 9.0 | 3.9 | 1.3 | 7.2 | 7 | 5 | 5 | 0 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.00 |