| # | Pitchers | B/T | Ht | Wt | DOB |
|---|---|---|---|---|---|
| 55 | Joe Blanton | R-R | 6'2" | 220 | Dec 11, 1980 |
| 62 | Ryan Brasier * | R-R | 6'0" | 205 | Aug 26, 1987 |
| 31 | Billy Buckner | R-R | 6'2" | 205 | Aug 27, 1983 |
| 24 | Sean Burnett | L-L | 6'1" | 180 | Sep 17, 1982 |
| 28 | David Carpenter * | R-R | 6'3" | 180 | Sep 1, 1987 |
| 59 | Robert Coello | R-R | 6'5" | 250 | Nov 23, 1984 |
| 65 | Dane De La Rosa | R-R | 6'7" | 245 | Feb 1, 1983 |
| 37 | Scott Downs | L-L | 6'2" | 220 | Mar 17, 1976 |
| 49 | Ernesto Frieri | R-R | 6'2" | 205 | Jul 19, 1985 |
| 48 | Tommy Hanson Restricted ** | R-R | 6'6" | 220 | Aug 28, 1986 |
| 40 | Kevin Jepsen
 15-day DL *
|
R-R | 6'3" | 235 | Jul 26, 1984 |
| 58 | Michael Kohn | R-R | 6'0" | 200 | Jun 26, 1986 |
| 38 | Mark Lowe | L-R | 6'3" | 210 | Jun 7, 1983 |
| 46 | Ryan Madson
15-day DL *
|
L-R | 6'6" | 210 | Aug 28, 1980 |
| 63 | Nick Maronde * | S-L | 6'3" | 205 | Sep 5, 1989 |
| 43 | Garrett Richards | R-R | 6'3" | 215 | May 27, 1988 |
| 51 | Michael Roth * | L-L | 6'1" | 210 | Feb 15, 1990 |
| 51 | Brandon Sisk * | L-L | 6'2" | 220 | Jul 13, 1985 |
| 64 | Andrew Taylor
60-day DL **
|
R-L | 6'2" | 205 | Aug 18, 1986 |
| 60 | Jason Vargas | L-L | 6'0" | 215 | Feb 2, 1983 |
| 36 | Jered Weaver
15-day DL *
|
R-R | 6'7" | 210 | Oct 4, 1982 |
| 57 | Jerome Williams | R-R | 6'3" | 240 | Dec 4, 1981 |
| 33 | C.J. Wilson | L-L | 6'1" | 210 | Nov 18, 1980 |
| # | Catchers | B/T | Ht | Wt | DOB |
| 16 | Hank Conger | S-R | 6'1" | 220 | Jan 29, 1988 |
| 22 | John Hester * | R-R | 6'4" | 230 | Sep 14, 1983 |
| 17 | Chris Iannetta | R-R | 6'0" | 230 | Apr 8, 1983 |
| # | Infielders | B/T | Ht | Wt | DOB |
| 2 | Erick Aybar | S-R | 5'10" | 180 | Jan 14, 1984 |
| 6 | Alberto Callaspo | S-R | 5'9" | 225 | Apr 19, 1983 |
| 12 | Tommy Field * | R-R | 5'10" | 185 | Feb 22, 1987 |
| 20 | Brendan Harris | R-R | 6'1" | 200 | Aug 26, 1980 |
| 18 | Luis Jimenez * | R-R | 6'1" | 205 | Jan 18, 1988 |
| 47 | Howie Kendrick | R-R | 5'10" | 205 | Jul 12, 1983 |
| 8 | Chris Nelson | R-R | 5'11" | 205 | Sep 3, 1985 |
| 5 | Albert Pujols | R-R | 6'3" | 230 | Jan 16, 1980 |
| 7 | Andrew Romine * | L-R | 6'1" | 190 | Dec 24, 1985 |
| # | Outfielders | B/T | Ht | Wt | DOB |
| 25 | Peter Bourjos
15-day DL *
|
R-R | 6'1" | 185 | Mar 31, 1987 |
| 56 | Kole Calhoun * | L-L | 5'10" | 190 | Oct 14, 1987 |
| 32 | Josh Hamilton | L-L | 6'4" | 225 | May 21, 1981 |
| 39 | J.B. Shuck | L-L | 5'11" | 195 | Jun 18, 1987 |
| 27 | Mike Trout | R-R | 6'2" | 230 | Aug 7, 1991 |
| 44 | Mark Trumbo | R-R | 6'4" | 235 | Jan 16, 1986 |
| 19 | Travis Witherspoon * | R-R | 6'2" | 190 | Apr 16, 1989 |
