| 55 | Joe Blanton | P | MLB | 6-2 | 220 | Right | Right | 12/11/1980 | 25 | Nashville,Tennessee | 2002 | 1 | 24 | OAK |
|
| 44 | Hiram Bocachica | CF-LF | MLB | 5-11 | 165 | Right | Right | 3/4/1976 | 30 | Ponce,Puerto Rico | 1994 | 1 | 21 | MTL |
| 22 | Milton Bradley | LF | MLB | 6-0 | 180 | Both | Right | 4/15/1978 | 28 | Harbor City,California | 1996 | 2 | 40 | MTL |
| 5 | Jeremy Brown | C | MLB | 5-10 | 210 | Right | Right | 10/25/1979 | 26 | Birmingham,Alabama | 2002 | 1 | 35 | OAK |
| 50 | Kiko Calero | P | MLB | 6-1 | 170 | Right | Right | 1/9/1975 | 31 | Santurce,Puerto Rico | 1996 | 27 | 799 | KC |
| 46 | Santiago Casilla | P | MLB | 6-0 | 160 | Right | Right | 3/7/1983 | 23 | Don Gregorio,Dominican Republic | 2000 | UDFA | | OAK |
| 3 | Eric Chavez | 3B | MLB | 6-0 | 204 | Left | Right | 12/7/1977 | 28 | Los Angeles,California | 1996 | 1 | 10 | OAK |
| 12 | Doug Clark | OF | MLB | 6-2 | 200 | Left | Right | 3/5/1976 | 30 | Springfield,Massachusetts | 1998 | 7 | 218 | SF |
| 7 | Bobby Crosby | SS | MLB | 6-3 | 195 | Right | Right | 1/12/1980 | 26 | Lakewood,California | 2001 | 1 | 25 | OAK |
| 58 | Justin Duchscherer | P | MLB | 6-3 | 164 | Right | Right | 11/19/1977 | 28 | Aberdeen,South Dakota | 1996 | 8 | 241 | BOS |
| 14 | Mark Ellis | 2B | MLB | 5-11 | 180 | Right | Right | 6/6/1977 | 29 | Rapid City,South Dakota | 1999 | 9 | 271 | KC |
| 47 | Ron Flores | P | MLB | 5-11 | 190 | Left | Left | 8/9/1979 | 26 | Whittier,California | 2000 | 29 | 870 | OAK |
| 57 | Chad Gaudin | P | MLB | 5-11 | 165 | Right | Right | 3/24/1983 | 23 | New Orleans,Louisiana | 2001 | 34 | 1009 | TB |
| 51 | Brad Halsey | P | MLB | 6-1 | 180 | Left | Left | 2/14/1981 | 25 | Houston,Texas | 2002 | 8 | 246 | NYY |
| 40 | Rich Harden | P | MLB | 6-1 | 180 | Left | Right | 11/30/1981 | 24 | Victoria,British Columbia | 2000 | 17 | 510 | OAK |
| 24 | Dan Haren | P | MLB | 6-5 | 220 | Right | Right | 9/17/1980 | 25 | Monterey Park,California | 2001 | 2 | 72 | STL |
| 12 | D'Angelo Jimenez | 2B-SS | MLB | 6-0 | 160 | Both | Right | 12/21/1977 | 28 | Santo Domingo,Dominican Republic | 1994 | UDFA | | NYY |
| 29 | Dan Johnson | 1B | MLB | 6-2 | 220 | Left | Right | 8/10/1979 | 26 | Coon Rapids,Minnesota | 2001 | 7 | 221 | OAK |
| 32 | Steve Karsay | P | MLB | 6-3 | 205 | Right | Right | 3/24/1972 | 34 | Flushing,New York | 1990 | 1 | 22 | TOR |
| 56 | Randy Keisler | P | MLB | 6-3 | 190 | Left | Left | 2/24/1976 | 30 | Richards,Texas | 1998 | 2 | 67 | NYY |
| 18 | Jason Kendall | C | MLB | 6-0 | 195 | Right | Right | 6/26/1974 | 32 | San Diego,California | 1992 | 1 | 23 | PIT |
| 37 | Joe Kennedy | P | MLB | 6-4 | 225 | Right | Left | 5/24/1979 | 27 | La Mesa,California | 1998 | 8 | 252 | TB |
| 23 | Bobby Kielty | RF | MLB | 6-1 | 215 | Both | Right | 8/5/1976 | 29 | Fontana,California | 1999 | UDFA | | MIN |
| 60 | Shane Komine | P | MLB | 5-8 | 160 | Right | Right | 10/18/1980 | 25 | Honolulu,Hawaii | 2002 | 9 | 278 | OAK |
| 21 | Mark Kotsay | LF | MLB | 6-0 | 190 | Left | Left | 12/2/1975 | 30 | Whittier,California | 1996 | 1 | 9 | FLA |
| 25 | Esteban Loaiza | P | MLB | 6-3 | 210 | Right | Right | 12/31/1971 | 34 | Tijuana,Mexico | 1991 | UDFA | | PIT |
| 17 | Adam Melhuse | C | MLB | 6-2 | 185 | Both | Right | 3/27/1972 | 34 | Santa Clara,California | 1993 | 13 | 378 | TOR |
| 16 | Jay Payton | CF-LF | MLB | 5-10 | 185 | Right | Right | 11/22/1972 | 33 | Zanesville,Ohio | 1994 | 1 | 29 | NYM |
| 4 | Antonio Perez | SS-3B | MLB | 5-11 | 175 | Right | Right | 1/26/1980 | 26 | Bani,Dominican Republic | 1998 | UDFA | | CIN |
| 52 | Matt Roney | P | MLB | 6-3 | 232 | Right | Right | 1/10/1980 | 26 | Tulsa,Oklahoma | 1998 | 1 | 28 | COL |
| 2 | Mike Rouse | SS | MLB | 5-11 | 185 | Left | Right | 4/25/1980 | 26 | San Jose,California | 2001 | 5 | 151 | TOR |
| 31 | Kirk Saarloos | P | MLB | 6-0 | 185 | Right | Right | 5/23/1979 | 27 | Long Beach,California | 2001 | 3 | 86 | HOU |
| 11,36 | Scott Sauerbeck | P | MLB | 6-3 | 197 | Right | Left | 11/9/1971 | 34 | Cincinnati,Ohio | 1994 | 23 | 624 | NYM |
| 19 | Marco Scutaro | 2B | MLB | 5-9 | 190 | Right | Right | 10/30/1975 | 30 | San Felipe,Venezuela | 1994 | UDFA | | CLE |
| 20 | Huston Street | P | MLB | 6-0 | 185 | Right | Right | 8/2/1983 | 22 | Austin,Texas | 2004 | 1 | 40 | OAK |
| 33 | Nick Swisher | RF | MLB | 6-0 | 200 | Both | Left | 11/25/1980 | 25 | Columbus,Ohio | 2002 | 1 | 16 | OAK |
| 35 | Frank Thomas | 1B-DH | MLB | 6-5 | 270 | Right | Right | 5/27/1968 | 38 | Columbus,Georgia | 1989 | 1 | 7 | CHW |
| 61 | Jason Windsor | P | MLB | 6-2 | 220 | Right | Right | 7/16/1982 | 23 | San Bernardino,California | 2004 | 3 | 97 | OAK |
| 45 | Jay Witasick | P | MLB | 6-4 | 235 | Right | Right | 8/28/1972 | 33 | Baltimore,Maryland | 1993 | 2 | 58 | STL |
| 75 | Barry Zito | P | MLB | 6-4 | 205 | Left | Left | 5/13/1978 | 28 | Las Vegas,Nevada | 1999 | 1 | 9 | OAK |