| SP | Greinke, Z.Greinke, Zack >> | 26 | 2009 | R | 97 | 10 | 10 | 6 | 2 | 3.36 | .326 | 1.39 | 9.3 | 3.2 | 8.6 | 67.0 | 69 | 26 | 25 | 6 | 24 | 64 | 0 | 0 | 0 | 0 | 7 | 4 | 1 | 3.51 |
| SP | Santana, J.Santana, Johan # >> | 30 | 2009 | L | 75 | 10 | 10 | 4 | 3 | 3.61 | .344 | 1.53 | 10.1 | 3.8 | 8.4 | 57.1 | 64 | 26 | 23 | 2 | 24 | 53 | 0 | 0 | 0 | 0 | 7 | 2 | 2 | 2.96 |
| SP | Rodriguez, W.Rodriguez, Wandy >> | 30 | 2009 | L | 70 | 10 | 10 | 5 | 2 | 4.50 | .333 | 1.50 | 10.0 | 3.5 | 6.8 | 56.0 | 62 | 28 | 28 | 5 | 22 | 42 | 0 | 0 | 0 | 0 | 4 | 0 | 2 | 3.84 |
| SP | Zambrano, C.Zambrano, Carlos >> | 28 | 2009 | R | 43 | 9 | 9 | 4 | 3 | 3.35 | .303 | 1.22 | 6.2 | 4.9 | 7.1 | 48.1 | 33 | 19 | 18 | 1 | 26 | 38 | 0 | 0 | 0 | 0 | 4 | 4 | 0 | 3.56 |
| RP | Papelbon, J.Papelbon, Jonathan >> | 29 | 2009 | R | 67 | 20 | 0 | 0 | 0 | 5.29 | .282 | 1.12 | 6.4 | 3.7 | 11.6 | 17.0 | 12 | 10 | 10 | 2 | 7 | 22 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3.35 |
| RP | Howell, J.Howell, J.P. >> | 26 | 2009 | L | 62 | 27 | 0 | 0 | 0 | 7.58 | .380 | 1.84 | 11.4 | 5.2 | 9.5 | 19.0 | 24 | 16 | 16 | 2 | 11 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4.00 |
| CL | Bailey, A.Bailey, Andrew >> | 25 | 2009 | R | 99 | 16 | 0 | 0 | 0 | 0.00 | .226 | 0.80 | 5.5 | 2.1 | 7.6 | 13.2 | 8 | 0 | 0 | 0 | 3 | 11 | 0 | 16 | 0 | 0 | 0 | 1 | 0 | 2.23 |
| RP | Madson, R.Madson, Ryan >> | 29 | 2009 | R | 37 | 8 | 0 | 1 | 0 | 13.50 | .467 | 2.63 | 21.6 | 3.6 | 9.0 | 5.1 | 12 | 8 | 8 | 0 | 2 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.20 |
| RP | Okajima, H.Okajima, Hideki >> | 34 | 2009 | L | 33 | 24 | 0 | 2 | 0 | 3.60 | .274 | 1.13 | 7.2 | 3.0 | 6.0 | 15.0 | 12 | 6 | 6 | 2 | 5 | 10 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 4.40 |
| RP | Qualls, C.Qualls, Chad >> | 31 | 2009 | R | 41 | 10 | 0 | 4 | 0 | 3.14 | .306 | 1.33 | 10.9 | 1.3 | 6.4 | 14.1 | 17 | 5 | 5 | 1 | 2 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.93 |