| SP | Mitre, S.Mitre, Sergio >> | 23 | 2004 | R | 10 | 2 | 4 | 6.62 | .358 | .390 | 1.78 | 12.5 | 3.5 | 6.5 | 51 | 71 | 6 | 20 | 37 | 0 | 0 | 5 | 76 | 17 | U |
| SP | Madritsch, B.Madritsch, Bobby >> | 28 | 2004 | L | 94 | 6 | 3 | 3.27 | .281 | .300 | 1.22 | 7.6 | 3.4 | 6.1 | 88 | 74 | 3 | 33 | 60 | 1 | 0 | 2 | 104 | 16 | F |
| RP | Putz, J.Putz, J.J. >> | 27 | 2004 | R | 46 | 0 | 3 | 4.71 | .311 | .340 | 1.43 | 9.4 | 3.4 | 6.7 | 63 | 66 | 10 | 24 | 47 | 0 | 9 | 1 | 24 | 16 | U |
| SP | Burnett, S.Burnett, Sean >> | 22 | 2004 | L | 15 | 5 | 5 | 5.02 | .338 | .360 | 1.61 | 10.9 | 3.5 | 3.8 | 71 | 86 | 9 | 28 | 30 | 1 | 0 | 2 | 97 | 14 | F |
| RP | Cormier, L.Cormier, Lance >> | 24 | 2004 | R | 3 | 1 | 4 | 8.14 | .375 | .410 | 1.93 | 12.4 | 5.0 | 4.8 | 45 | 62 | 13 | 25 | 24 | 0 | 0 | 2 | 49 | 14 | U |
| SP | Wood, M.Wood, Mike >> | 24 | 2004 | R | 45 | 3 | 8 | 5.94 | .311 | .330 | 1.40 | 10.1 | 2.5 | 4.9 | 100 | 112 | 16 | 28 | 54 | 0 | 0 | 6 | 104 | 14 | U |
| RP | Balfour, G.Balfour, Grant >> | 27 | 2004 | R | 62 | 4 | 1 | 4.35 | .306 | .340 | 1.44 | 8.1 | 4.8 | 9.7 | 39 | 35 | 4 | 21 | 42 | 0 | 0 | 3 | 23 | 20 | A |
| SP | Claussen, B.Claussen, Brandon >> | 25 | 2004 | L | 14 | 2 | 8 | 6.14 | .356 | .380 | 1.74 | 10.9 | 4.8 | 6.1 | 66 | 80 | 9 | 35 | 45 | 0 | 0 | 3 | 84 | 16 | U |
| SP | Greinke, Z.Greinke, Zack >> | 21 | 2004 | R | 88 | 8 | 11 | 3.97 | .275 | .290 | 1.17 | 8.9 | 1.6 | 6.2 | 145 | 143 | 26 | 26 | 100 | 0 | 0 | 1 | 107 | 16 | S |
| RP | Howard, B.Howard, Ben >> | 25 | 2004 | R | 38 | 1 | 1 | 5.50 | .324 | .360 | 1.57 | 9.0 | 5.1 | 8.0 | 37 | 37 | 6 | 21 | 33 | 0 | 0 | 3 | 24 | 18 | U |
| RP | Cordero, C.Cordero, Chad >> | 22 | 2004 | R | 74 | 7 | 3 | 2.94 | .302 | .320 | 1.35 | 7.5 | 4.7 | 9.1 | 82 | 68 | 8 | 43 | 83 | 0 | 14 | 5 | 24 | 19 | U |
| RP | Harikkala, T.Harikkala, Tim >> | 33 | 2004 | R | 72 | 6 | 6 | 4.74 | .285 | .310 | 1.26 | 8.0 | 3.3 | 4.4 | 62 | 55 | 10 | 23 | 30 | 0 | 0 | 0 | 23 | 15 | F |
| SP | Hendrickson, B.Hendrickson, Ben >> | 23 | 2004 | R | 13 | 1 | 8 | 6.22 | .345 | .380 | 1.70 | 11.3 | 3.9 | 5.7 | 46 | 58 | 6 | 20 | 29 | 0 | 0 | 1 | 82 | 15 | U |
| RP | Aquino, G.Aquino, Greg >> | 26 | 2004 | R | 92 | 0 | 2 | 3.06 | .263 | .290 | 1.17 | 6.2 | 4.4 | 6.7 | 35 | 24 | 4 | 17 | 26 | 0 | 16 | 4 | 23 | 18 | U |
| SP | Francis, J.Francis, Jeff >> | 23 | 2004 | L | 32 | 3 | 2 | 5.15 | .318 | .350 | 1.53 | 10.5 | 3.3 | 8.0 | 36 | 42 | 8 | 13 | 32 | 0 | 0 | 2 | 91 | 18 | F |
| SP | Riley, M.Riley, Matt >> | 25 | 2004 | L | 46 | 3 | 4 | 5.63 | .340 | .370 | 1.63 | 8.4 | 6.2 | 8.4 | 64 | 60 | 11 | 44 | 60 | 0 | 0 | 2 | 82 | 18 | A |
| SP | Tadano, K.Tadano, Kazuhito >> | 24 | 2004 | R | 46 | 1 | 1 | 4.65 | .313 | .340 | 1.46 | 9.9 | 3.2 | 7.0 | 50 | 55 | 6 | 18 | 39 | 0 | 0 | 2 | 65 | 17 | U |
| RP | Duchscherer, J.Duchscherer, Justin >> | 27 | 2004 | R | 78 | 7 | 6 | 3.27 | .282 | .300 | 1.22 | 8.0 | 3.0 | 5.5 | 96 | 85 | 13 | 32 | 59 | 0 | 0 | 1 | 35 | 15 | F |
| RP | Otsuka, A.Otsuka, Akinori >> | 32 | 2004 | R | 98 | 7 | 2 | 1.75 | .254 | .280 | 1.06 | 6.5 | 3.0 | 10.2 | 77 | 56 | 6 | 26 | 87 | 0 | 2 | 0 | 23 | 20 | U |
| RP | Corey, M.Corey, Mark >> | 30 | 2004 | R | 21 | 1 | 2 | 4.54 | .335 | .370 | 1.66 | 10.0 | 4.9 | 7.2 | 35 | 39 | 3 | 19 | 28 | 0 | 0 | 4 | 23 | 19 | U |
| RP | Adams, M.Adams, Mike >> | 26 | 2004 | R | 77 | 2 | 3 | 3.40 | .275 | .300 | 1.21 | 8.5 | 2.4 | 6.6 | 53 | 50 | 5 | 14 | 39 | 0 | 0 | 2 | 24 | 17 | F |
| SP | Lowry, N.Lowry, Noah >> | 24 | 2004 | L | 79 | 6 | 0 | 3.82 | .294 | .320 | 1.29 | 8.9 | 2.7 | 7.0 | 92 | 91 | 10 | 28 | 72 | 2 | 0 | 2 | 102 | 17 | F |
| RP | Horgan, J.Horgan, Joe >> | 27 | 2004 | L | 61 | 4 | 1 | 3.15 | .305 | .340 | 1.43 | 7.9 | 5.0 | 6.8 | 40 | 35 | 5 | 22 | 30 | 0 | 2 | 0 | 23 | 17 | U |
| RP | Norton, P.Norton, Phil >> | 28 | 2004 | L | 20 | 2 | 5 | 5.07 | .347 | .370 | 1.68 | 9.8 | 5.3 | 6.6 | 65 | 71 | 5 | 38 | 48 | 0 | 0 | 2 | 23 | 16 | U |
| RP | Wagner, R.Wagner, Ryan >> | 22 | 2004 | R | 16 | 3 | 2 | 4.70 | .345 | .370 | 1.69 | 10.4 | 4.8 | 6.5 | 51 | 59 | 7 | 27 | 37 | 0 | 0 | 6 | 23 | 17 | U |
| RP | Cotts, N.Cotts, Neal >> | 24 | 2004 | L | 61 | 4 | 4 | 5.65 | .307 | .330 | 1.40 | 8.4 | 4.2 | 8.0 | 65 | 61 | 13 | 30 | 58 | 0 | 0 | 8 | 24 | 18 | F |
| SP | Cabrera, D.Cabrera, Daniel >> | 23 | 2004 | R | 36 | 12 | 8 | 5.00 | .342 | .360 | 1.59 | 8.9 | 5.4 | 4.7 | 147 | 145 | 14 | 89 | 76 | 1 | 1 | 12 | 93 | 14 | A |
| RP | Nageotte, C.Nageotte, Clint >> | 24 | 2004 | R | 3 | 1 | 6 | 7.36 | .389 | .420 | 2.08 | 12.0 | 6.8 | 6.0 | 36 | 48 | 3 | 27 | 24 | 0 | 0 | 3 | 55 | 16 | F |
| RP | Beltran, F.Beltran, Francis >> | 25 | 2004 | R | 48 | 2 | 2 | 5.47 | .320 | .350 | 1.51 | 8.6 | 5.0 | 8.8 | 49 | 47 | 11 | 27 | 48 | 0 | 1 | 2 | 23 | 19 | U |
| SP | Vogelsong, R.Vogelsong, Ryan >> | 27 | 2004 | R | 25 | 6 | 13 | 6.50 | .345 | .360 | 1.62 | 10.0 | 4.5 | 6.2 | 133 | 148 | 22 | 67 | 92 | 0 | 0 | 3 | 77 | 16 | A |
| RP | Diaz, F.Diaz, Felix >> | 24 | 2004 | R | 16 | 2 | 5 | 6.75 | .332 | .360 | 1.59 | 11.4 | 2.9 | 6.1 | 49 | 62 | 13 | 16 | 33 | 0 | 0 | 0 | 50 | 16 | F |
| RP | Gallo, M.Gallo, Mike >> | 27 | 2004 | L | 27 | 2 | 0 | 4.74 | .323 | .350 | 1.53 | 10.1 | 3.7 | 6.2 | 49 | 55 | 12 | 20 | 34 | 0 | 0 | 3 | 23 | 16 | U |
| RP | Dohmann, S.Dohmann, Scott >> | 26 | 2004 | R | 76 | 0 | 3 | 4.11 | .288 | .320 | 1.30 | 8.0 | 3.7 | 9.6 | 46 | 41 | 8 | 19 | 49 | 0 | 0 | 3 | 23 | 19 | S |
| SP | Bedard, E.Bedard, Erik >> | 25 | 2004 | L | 31 | 6 | 10 | 4.59 | .343 | .360 | 1.61 | 9.8 | 4.7 | 7.9 | 137 | 149 | 13 | 71 | 121 | 0 | 0 | 7 | 90 | 18 | F |
| RP | Camp, S.Camp, Shawn >> | 29 | 2004 | R | 47 | 2 | 2 | 3.92 | .302 | .330 | 1.36 | 10.1 | 2.2 | 7.0 | 66 | 74 | 10 | 16 | 51 | 0 | 2 | 2 | 31 | 17 | F |
| RP | Leicester, J.Leicester, Jon >> | 25 | 2004 | R | 63 | 5 | 1 | 3.89 | .293 | .320 | 1.34 | 8.8 | 3.3 | 7.7 | 41 | 40 | 7 | 15 | 35 | 0 | 0 | 0 | 26 | 18 | F |
| SP | Capuano, C.Capuano, Chris >> | 26 | 2004 | L | 56 | 6 | 8 | 4.99 | .318 | .340 | 1.45 | 9.3 | 3.8 | 8.2 | 88 | 91 | 18 | 37 | 80 | 0 | 0 | 3 | 92 | 18 | S |
| RP | Francisco, F.Francisco, Frank >> | 25 | 2004 | R | 91 | 5 | 1 | 3.33 | .282 | .310 | 1.25 | 6.4 | 4.9 | 10.6 | 51 | 36 | 4 | 28 | 60 | 0 | 0 | 4 | 23 | 22 | S |
| RP | Chulk, V.Chulk, Vinnie >> | 26 | 2004 | R | 33 | 1 | 3 | 4.66 | .326 | .350 | 1.54 | 9.5 | 4.3 | 7.1 | 56 | 59 | 6 | 27 | 44 | 0 | 2 | 2 | 24 | 17 | U |
| RP | Rodriguez, E.Rodriguez, Eddy >> | 23 | 2004 | R | 54 | 1 | 0 | 4.78 | .322 | .350 | 1.53 | 7.5 | 6.3 | 7.7 | 43 | 36 | 5 | 30 | 37 | 0 | 0 | 2 | 29 | 19 | A |
| SP | Hancock, J.Hancock, Josh >> | 26 | 2004 | R | 21 | 5 | 2 | 5.09 | .337 | .360 | 1.60 | 10.4 | 4.0 | 5.1 | 63 | 73 | 17 | 28 | 36 | 0 | 0 | 5 | 71 | 15 | F |
| RP | Harville, C.Harville, Chad >> | 28 | 2004 | R | 40 | 3 | 2 | 4.69 | .322 | .350 | 1.51 | 9.2 | 4.4 | 7.5 | 55 | 56 | 8 | 27 | 46 | 0 | 0 | 5 | 23 | 17 | F |
| SP | Hudson, L.Hudson, Luke >> | 27 | 2004 | R | 93 | 4 | 2 | 2.42 | .284 | .310 | 1.27 | 6.8 | 4.7 | 7.1 | 48 | 36 | 3 | 25 | 38 | 0 | 0 | 5 | 95 | 17 | A |
| RP | Simpson, A.Simpson, Allan >> | 27 | 2004 | R | 24 | 2 | 1 | 5.08 | .335 | .370 | 1.64 | 10.2 | 4.6 | 10.6 | 39 | 44 | 4 | 20 | 46 | 0 | 0 | 3 | 25 | 21 | S |
| RP | Grabow, J.Grabow, John >> | 26 | 2004 | L | 14 | 2 | 5 | 5.11 | .361 | .390 | 1.79 | 12.0 | 4.1 | 9.4 | 61 | 81 | 8 | 28 | 64 | 0 | 1 | 5 | 23 | 20 | F |
| RP | Takatsu, S.Takatsu, Shingo >> | 36 | 2004 | R | 97 | 6 | 4 | 2.31 | .237 | .260 | 0.98 | 5.8 | 3.0 | 7.3 | 62 | 40 | 6 | 21 | 50 | 0 | 19 | 1 | 23 | 18 | A |
| RP | Cerda, J.Cerda, Jaime >> | 26 | 2004 | L | 40 | 1 | 4 | 3.15 | .329 | .360 | 1.58 | 8.2 | 6.0 | 6.6 | 45 | 41 | 1 | 30 | 33 | 0 | 2 | 4 | 23 | 16 | F |
| RP | Frasor, J.Frasor, Jason >> | 27 | 2004 | R | 52 | 4 | 6 | 4.08 | .318 | .340 | 1.47 | 8.5 | 4.8 | 7.1 | 68 | 64 | 4 | 36 | 54 | 0 | 17 | 4 | 23 | 17 | U |
| SP | Grilli, J.Grilli, Jason >> | 28 | 2004 | R | 21 | 2 | 3 | 7.40 | .332 | .360 | 1.60 | 10.4 | 4.0 | 5.2 | 45 | 52 | 11 | 20 | 26 | 1 | 0 | 2 | 100 | 15 | U |
| RP | Bennett, J.Bennett, Jeff >> | 24 | 2004 | R | 34 | 1 | 5 | 4.79 | .318 | .340 | 1.46 | 9.9 | 3.3 | 5.7 | 71 | 78 | 12 | 26 | 45 | 0 | 0 | 6 | 24 | 16 | U |
| RP | Gregg, K.Gregg, Kevin >> | 26 | 2004 | R | 68 | 5 | 2 | 4.21 | .296 | .320 | 1.31 | 8.9 | 2.9 | 8.7 | 87 | 86 | 6 | 28 | 84 | 0 | 1 | 13 | 31 | 19 | U |
| SP | Gonzalez, E.Gonzalez, Edgar >> | 21 | 2004 | R | 4 | 0 | 9 | 9.32 | .378 | .410 | 1.96 | 14.1 | 3.5 | 6.1 | 46 | 72 | 15 | 18 | 31 | 0 | 0 | 3 | 82 | 16 | U |
| RP | Neal, B.Neal, Blaine >> | 26 | 2004 | R | 39 | 1 | 1 | 4.07 | .306 | .340 | 1.43 | 10.5 | 2.4 | 7.7 | 42 | 49 | 6 | 11 | 36 | 0 | 0 | 0 | 23 | 19 | A |
| RP | Madson, R.Madson, Ryan >> | 24 | 2004 | R | 86 | 9 | 3 | 2.34 | .265 | .290 | 1.13 | 7.9 | 2.2 | 6.4 | 77 | 68 | 6 | 19 | 55 | 0 | 1 | 7 | 29 | 16 | F |
| RP | Yates, T.Yates, Tyler >> | 27 | 2004 | R | 7 | 2 | 4 | 6.36 | .368 | .400 | 1.87 | 11.9 | 4.9 | 6.8 | 46 | 61 | 6 | 25 | 35 | 0 | 0 | 1 | 41 | 17 | U |
| RP | Field, N.Field, Nate >> | 29 | 2004 | R | 67 | 2 | 3 | 4.26 | .294 | .320 | 1.34 | 8.2 | 3.9 | 6.1 | 44 | 40 | 5 | 19 | 30 | 0 | 3 | 2 | 23 | 17 | U |
| RP | Walker, T.Walker, Tyler >> | 28 | 2004 | R | 36 | 5 | 1 | 4.24 | .318 | .340 | 1.48 | 9.9 | 3.4 | 6.9 | 63 | 69 | 8 | 24 | 48 | 0 | 1 | 1 | 25 | 16 | U |
| SP | Daigle, C.Daigle, Casey >> | 23 | 2004 | R | 2 | 2 | 3 | 7.16 | .364 | .390 | 1.84 | 11.6 | 5.0 | 3.1 | 49 | 63 | 9 | 27 | 17 | 0 | 0 | 1 | 87 | 13 | A |
| RP | Sanchez, D.Sanchez, Duaner >> | 25 | 2004 | R | 52 | 3 | 1 | 3.38 | .302 | .320 | 1.35 | 9.1 | 3.0 | 5.0 | 80 | 81 | 9 | 27 | 44 | 0 | 0 | 6 | 24 | 15 | U |
| RP | Adkins, J.Adkins, Jon >> | 27 | 2004 | R | 24 | 2 | 3 | 4.65 | .326 | .350 | 1.53 | 10.9 | 2.9 | 6.4 | 62 | 75 | 13 | 20 | 44 | 0 | 0 | 1 | 25 | 17 | U |
| RP | Miller, M.Miller, Matt >> | 33 | 2004 | R | 92 | 4 | 1 | 3.09 | .271 | .300 | 1.18 | 6.9 | 3.8 | 9.0 | 55 | 42 | 1 | 23 | 55 | 0 | 1 | 1 | 23 | 19 | U |
| SP | Young, C.Young, Chris >> | 25 | 2004 | R | 80 | 3 | 2 | 4.71 | .280 | .310 | 1.28 | 9.0 | 2.5 | 6.8 | 36 | 36 | 7 | 10 | 27 | 0 | 0 | 1 | 91 | 16 | U |
| RP | Gonzalez, M.Gonzalez, Mike >> | 26 | 2004 | L | 99 | 3 | 1 | 1.25 | .215 | .240 | 0.88 | 6.7 | 1.3 | 11.5 | 43 | 32 | 2 | 6 | 55 | 0 | 1 | 4 | 23 | 23 | U |
| RP | Geary, G.Geary, Geoff >> | 28 | 2004 | R | 23 | 1 | 0 | 5.44 | .324 | .350 | 1.55 | 10.6 | 3.3 | 6.1 | 44 | 52 | 8 | 16 | 30 | 0 | 0 | 2 | 27 | 17 | U |