| Roster | ||||||||
| No | STARTERS | AGE | B | T | HT | WT | DOB | 2012 SALARY |
| 24 | Haren, Dan | 31 | R | R | 6-5 | 215 | 09/17/1980 | $12,750,000 |
| 54 | Santana, Ervin | 29 | R | R | 6-2 | 185 | 12/12/1982 | $11,200,000 |
| 36 | Weaver, Jered | 29 | R | R | 6-7 | 215 | 10/04/1982 | $14,200,000 |
| 57 | Williams, Jerome | 30 | R | R | 6-3 | 240 | 12/04/1981 | $820,000 |
| 33 | Wilson, C.J. | 31 | L | L | 6-1 | 210 | 11/18/1980 | $10,500,000 |
| No | BULLPEN | AGE | B | T | HT | WT | DOB | 2012 SALARY |
| 52 | Carpenter, David | 24 | 6-3 | 180 | 09/01/1987 | Not available | ||
| 38 | Cassevah, Bobby | 26 | R | R | 6-3 | 225 | 09/11/1985 | $490,000 |
| 37 | Downs, Scott | 36 | L | L | 6-2 | 215 | 03/17/1976 | $5,000,000 |
| 49 | Frieri, Ernesto | 26 | R | R | 6-2 | 200 | 07/19/1985 | $489,100 |
| 32 | Hawkins, LaTroy (DL) | 39 | R | R | 6-5 | 220 | 12/21/1972 | $3,000,000 |
| 55 | Isringhausen, Jason | 39 | R | R | 6-3 | 230 | 09/07/1972 | $650,000 |
| 58 | Kohn, Michael (DL) | 25 | R | R | 6-0 | 200 | 06/26/1986 | $481,500 |
| 49 | Ramirez, Horacio | 32 | L | L | 6-1 | 221 | 11/24/1979 | Not available |
| 21 | Takahashi, Hisanori | 37 | L | L | 5-10 | 175 | 04/02/1975 | $4,200,000 |
| 51 | Walden, Jordan | 24 | R | R | 6-5 | 235 | 11/16/1987 | $495,000 |
| No | CATCHERS | AGE | B | T | HT | WT | DOB | 2012 SALARY |
| 41 | Hester, John | 28 | R | R | 6-4 | 228 | 09/14/1983 | Not available |
| 17 | Iannetta, Chris (DL) | 29 | R | R | 6-0 | 230 | 04/08/1983 | $3,550,000 |
| 46 | Wilson, Bobby | 29 | R | R | 6-0 | 210 | 04/08/1983 | $487,500 |
| No | INFIELDERS | AGE | B | T | HT | WT | DOB | 2012 SALARY |
| 2 | Aybar, Erick | 28 | S | R | 5-10 | 180 | 01/14/1984 | $5,075,000 |
| 6 | Callaspo, Alberto | 29 | S | R | 5-9 | 200 | 04/19/1983 | $3,150,000 |
| 13 | Izturis, Maicer | 31 | S | R | 5-8 | 170 | 09/12/1980 | $3,966,666 |
| 47 | Kendrick, Howard | 28 | R | R | 5-10 | 210 | 07/12/1983 | $4,850,000 |
| 5 | Pujols, Albert | 32 | R | R | 6-3 | 230 | 01/16/1980 | $12,000,000 |
| 18 | Romine, Andrew | 26 | S | R | 6-1 | 190 | 12/24/1985 | Not available |
| 44 | Trumbo, Mark | 26 | R | R | 6-4 | 220 | 01/16/1986 | $500,000 |
| No | OUTFIELDERS | AGE | B | T | HT | WT | DOB | 2012 SALARY |
| 25 | Bourjos, Peter | 25 | R | R | 6-1 | 185 | 03/31/1987 | $500,000 |
| 56 | Calhoun, Kole | 24 | 5-10 | 200 | 10/14/1987 | Not available | ||
| 48 | Hunter, Torii | 36 | R | R | 6-2 | 225 | 07/18/1975 | $18,500,000 |
| 39 | Langerhans, Ryan (DL) | 32 | L | L | 6-3 | 220 | 02/20/1980 | Not available |
| 28 | Moore, Jeremy (DL) | 24 | L | R | 6-1 | 195 | 06/29/1987 | $480,000 |
| 27 | Trout, Mike | 20 | R | R | 6-1 | 200 | 08/07/1991 | Not available |
| 10 | Wells, Vernon (DL) | 33 | R | R | 6-1 | 230 | 12/08/1978 | $24,187,500 |
| No | DESIGNATED HITTERS | AGE | B | T | HT | WT | DOB | 2012 SALARY |
| 8 | Morales, Kendrys | 28 | S | R | 6-1 | 225 | 06/20/1983 | $2,975,000 |