| 37 | Matt Albers | P | MLB | 6-0 | 195 | Left | Right | 1/20/1983 | 24 | Sugar Land,Texas | 2001 | 23 | 686 | HOU |
|
| 20 | Josh Anderson | OF | MLB | 6-2 | 195 | Left | Right | 8/10/1982 | 24 | Somerset,Kentucky | 2003 | 4 | 119 | HOU |
| 11 | Brad Ausmus | C | MLB | 5-11 | 195 | Right | Right | 4/14/1969 | 38 | New Haven,Connecticut | 1987 | 48 | 1151 | NYY |
| 41 | Brandon Backe | P | MLB | 6-0 | 185 | Right | Right | 4/5/1978 | 29 | Galveston,Texas | 1998 | 18 | 552 | TB |
| 17 | Lance Berkman | 1B | MLB | 6-1 | 205 | Both | Left | 2/10/1976 | 31 | Waco,Texas | 1997 | 1 | 16 | HOU |
| 7 | Craig Biggio | 2B-C | MLB | 5-11 | 180 | Right | Right | 12/14/1965 | 41 | Smithtown,New York | 1987 | 1 | 22 | HOU |
| 58 | Dave Borkowski | P | MLB | 6-1 | 200 | Right | Right | 2/7/1977 | 30 | Detroit,Michigan | 1995 | 11 | 294 | DET |
| 4 | Eric Bruntlett | SS-2B | MLB | 6-0 | 200 | Right | Right | 3/29/1978 | 29 | Lafayette,Indiana | 2000 | 9 | 277 | HOU |
| 2 | Chris Burke | 2B | MLB | 5-11 | 183 | Right | Right | 3/11/1980 | 27 | Louisville,Kentucky | 2001 | 1 | 10 | HOU |
| 38 | Travis Driskill | P | MLB | 6-0 | 225 | Right | Right | 8/1/1971 | 35 | Omaha,Nebraska | 1993 | 4 | 111 | CLE |
| 14 | Morgan Ensberg | 3B | MLB | 6-2 | 210 | Right | Right | 8/26/1975 | 31 | Hermosa Beach,California | 1998 | 9 | 272 | HOU |
| 28 | Adam Everett | 3B | MLB | 6-0 | 156 | Right | Right | 2/2/1977 | 30 | Austell,Georgia | 1998 | 1 | 12 | BOS |
| 71 | Juan Gutierrez | P | MLB | 6-3 | 200 | Right | Right | 7/14/1983 | 23 | Puerto La Cruz,Venezuela | 2000 | UDFA | | HOU |
| 23 | Jason Jennings | P | MLB | 6-2 | 242 | Right | Right | 7/17/1978 | 28 | Dallas,Texas | 1999 | 1 | 16 | COL |
| 26 | Mike Lamb | 1B | MLB | 6-1 | 185 | Left | Right | 8/9/1975 | 31 | West Covina,California | 1997 | 7 | 227 | TEX |
| 16 | Jason Lane | P | MLB | 6-2 | 215 | Right | Left | 12/22/1976 | 30 | Santa Rosa,California | 1999 | 6 | 203 | HOU |
| 45 | Carlos Lee | 1B | MLB | 6-2 | 220 | Right | Right | 6/20/1976 | 31 | Aguadulce,Panama | 1994 | UDFA | | CHW |
| 54 | Brad Lidge | P | MLB | 6-5 | 200 | Right | Right | 12/23/1976 | 30 | Sacramento,California | 1998 | 1 | 17 | HOU |
| 8 | Mark Loretta | 2B-SS | MLB | 6-0 | 190 | Right | Right | 8/14/1971 | 35 | Santa Monica,California | 1993 | 7 | 207 | MIL |
| 62 | Mark McLemore | P | MLB | 6-2 | 210 | Left | Left | 10/9/1980 | 26 | Sacramento,California | 2002 | 4 | 131 | HOU |
| 47 | Trever Miller | P | MLB | 6-4 | 195 | Right | Left | 5/29/1973 | 34 | Louisville,Kentucky | 1991 | 1 | 41 | DET |
| 36 | Brian Moehler | P | MLB | 6-3 | 235 | Right | Right | 12/31/1971 | 35 | Rockingham,North Carolina | 1993 | 6 | 165 | DET |
| 13 | Eric Munson | 3B | MLB | 6-3 | 220 | Left | Right | 10/3/1977 | 29 | San Diego,California | 1999 | 1 | 3 | DET |
| 44 | Roy Oswalt | P | MLB | 6-0 | 170 | Right | Right | 8/29/1977 | 29 | Weir,Mississippi | 1996 | 23 | 684 | HOU |
| 19 | Orlando Palmeiro | LF-RF | MLB | 5-11 | 175 | Left | Left | 1/19/1969 | 38 | Hoboken,New Jersey | 1991 | 33 | 871 | CAL |
| 65 | Troy Patton | P | MLB | 6-1 | 185 | Both | Left | 9/3/1985 | 21 | Magnolia,Texas | 2004 | 9 | 274 | HOU |
| 52 | Felipe Paulino | P | MLB | 6-2 | 180 | Right | Right | 10/5/1983 | 23 | Santo Domingo,Dominican Republic | 2001 | UDFA | | HOU |
| 9 | Hunter Pence | RF | MLB | 6-4 | 210 | Right | Right | 4/13/1983 | 24 | Fort Worth,Texas | 2004 | 2 | 64 | HOU |
| 50 | Chad Qualls | P | MLB | 6-5 | 205 | Right | Right | 8/17/1978 | 28 | Lomita,California | 2000 | 2 | 67 | HOU |
| 55 | Humberto Quintero | C | MLB | 6-1 | 190 | Right | Right | 8/2/1979 | 27 | Maracaibo,Venezuela | 1997 | UDFA | | CHW |
| 63 | Stephen Randolph | P | MLB | 6-3 | 185 | Left | Left | 5/1/1974 | 33 | Okinawa,Japan | 1995 | 18 | 506 | NYY |
| 10 | Cody Ransom | SS-3B | MLB | 6-2 | 190 | Right | Right | 2/17/1976 | 31 | Mesa,Arizona | 1998 | 9 | 278 | SF |
| 51 | Wandy Rodriguez | P | MLB | 5-11 | 160 | Both | Left | 1/18/1979 | 28 | Santiago Rodriguez,Dominican Republic | 1999 | UDFA | | HOU |
| 43 | Chris Sampson | P | MLB | 6-0 | 170 | Right | Right | 5/23/1978 | 29 | Pasadena,Texas | 1999 | 8 | 263 | HOU |
| 59 | Dennis Sarfate | P | MLB | 6-4 | 210 | Right | Right | 4/9/1981 | 26 | Queens,New York | 2001 | 9 | 268 | MIL |
| 30 | Luke Scott | DH | MLB | 6-0 | 210 | Left | Right | 6/25/1978 | 29 | De Leon Springs,Florida | 2001 | 9 | 277 | CLE |
| 46 | J.R. Towles | C | MLB | 6-2 | 190 | Right | Right | 2/11/1984 | 23 | Crosby,Texas | 2004 | 20 | 604 | HOU |
| 35 | Dan Wheeler | P | MLB | 6-3 | 222 | Right | Right | 12/10/1977 | 29 | Providence,Rhode Island | 1996 | 34 | 1024 | TB |
| 21 | Rick White | P | MLB | 6-4 | 215 | Right | Right | 12/23/1968 | 38 | Springfield,Ohio | 1990 | 15 | 390 | PIT |
| 21 | Ty Wigginton | 1B | MLB | 6-0 | 210 | Right | Right | 10/11/1977 | 29 | San Diego,California | 1998 | 17 | 514 | NYM |
| 29 | Woody Williams | P | MLB | 6-0 | 195 | Right | Right | 8/19/1966 | 40 | Houston,Texas | 1988 | 28 | 732 | TOR |