| - | Tim Alderson | P | AAA | 6-6 | 217 | Right | Right | 11/3/1988 | 20 | Phoenix,Arizona | 2007 | 1 | 22 | SF |
|
| 55 | Mike Ambort | C | AA | 6-1 | 215 | Both | Right | 4/23/1985 | 24 | Rockville Centre,New York | 2007 | 6 | 194 | SF |
| - | Rich Aurilia | SS | MLB | 6-1 | 185 | Right | Right | 9/2/1971 | 37 | Brooklyn,New York | 1992 | 24 | 678 | TEX |
| 46 | Scott Barnes | P | MLB | 6-3 | 175 | Left | Left | 9/5/1987 | 21 | Springfield,Massachusetts | 2008 | 8 | 237 | SF |
| 9 | Brian Bocock | 2B-SS | MLB | 5-11 | 185 | Right | Right | 3/9/1985 | 24 | Harrisonburg,Virginia | 2006 | 9 | 266 | SF |
| 25 | T.J. Brewer | P | AAA | 6-2 | 200 | Right | Right | 8/30/1984 | 24 | Bloomington,Indiana | 2007 | 35 | 1060 | SF |
| 40 | Garrett Broshuis | P | AAA | 6-2 | 188 | Right | Right | 12/18/1981 | 27 | Cape Girardeau,Missouri | 2004 | 5 | 160 | SF |
| - | Madison Bumgarner | P | MLB | 6-4 | 215 | Right | Left | 8/1/1989 | 19 | Hudson,North Carolina | 2007 | 1 | 10 | SF |
| 16 | Craig Clark | P | AA | 6-3 | 203 | Right | Left | 7/9/1984 | 24 | Phoenixville,Pennsylvania | 2007 | 14 | 434 | SF |
| - | Ben Copeland | RF | AAA | 6-1 | 195 | Left | Left | 12/17/1983 | 25 | Bradford,Pennsylvania | 2005 | 4 | 132 | SF |
| 40 | Rafael Cova | P | AAA | 6-2 | 174 | Right | Right | 3/5/1982 | 27 | Cariaco,Venezuela | 2005 | UDFA | | NYM |
| - | Adam Cowart | P | AA | 6-2 | 190 | Right | Right | 8/18/1983 | 25 | Houston,Texas | 2006 | 35 | 1046 | SF |
| - | Brandon Crawford | SS | MLB | 6-2 | 200 | Left | Right | 1/21/1987 | 22 | Mountain View,California | 2008 | 4 | 117 | SF |
| 17 | Steve Edlefsen | P | MLB | 6-2 | 195 | Right | Right | 6/27/1985 | 24 | Minneapolis,Minnesota | 2007 | 16 | 494 | SF |
| 14 | Darren Ford | CF | MLB | 6-1 | 195 | Right | Right | 10/1/1985 | 23 | Vineland,New Jersey | 2004 | 18 | 526 | MIL |
| - | Vladimir Frias | RF-LF | AA | 6-2 | 170 | Both | Right | 9/6/1986 | 22 | Los Alcanzzas,Dominican Republic | 2008 | 30 | 897 | SF |
| 34 | Conor Gillaspie | 3B | MLB | 6-1 | 195 | Left | Right | 7/18/1987 | 21 | Omaha,Nebraska | 2008 | 1 | 37 | SF |
| 18 | Tyler Graham | LF-CF | MLB | 6-0 | 180 | Right | Right | 1/25/1984 | 25 | Great Falls,Montana | 2006 | 19 | 566 | SF |
| 2 | Shane Jordan | OF | A+ | 5-7 | 160 | Left | Left | 11/26/1984 | 24 | Sarasota,Florida | 2007 | 43 | 1279 | SF |
| 39 | Roger Kieschnick | LF | AAA | 6-3 | 215 | Left | Right | 1/21/1987 | 22 | Dallas,Texas | 2008 | 3 | 82 | SF |
| 28 | Trent Kline | C | A+ | 5-9 | 160 | Both | Right | 7/22/1984 | 24 | York,Pennsylvania | 2007 | 49 | 1420 | SF |
| - | Mitch Lively | P | AAA | 6-5 | 230 | Right | Right | 9/7/1985 | 23 | Susanville,California | 2007 | 16 | 492 | COL |
| 49 | Ryan Lormand | SS | AAA | 6-0 | 170 | Right | Right | 10/30/1985 | 23 | Lafayette,Louisiana | 2008 | 26 | 777 | SF |
| 23 | Aaron Lowenstein | C | AA | 6-1 | 195 | Right | Right | 6/9/1985 | 24 | Los Angeles,California | 2008 | 44 | 1317 | SF |
| 50 | David Maroul | SS | AAA | 6-2 | 210 | Right | Right | 2/15/1983 | 26 | Fort Worth,Texas | 2005 | 23 | 702 | SF |
| - | Joe Martinez | P | MLB | 6-3 | 185 | Left | Right | 2/26/1983 | 26 | South Orange,New Jersey | 2005 | 12 | 372 | SF |
| 43 | David Mixon | P | AAA | 6-3 | 190 | Right | Right | 9/10/1984 | 24 | Americus,Georgia | 2007 | 20 | 614 | SF |
| 17 | Mike Musgrave | P | AAA | 6-2 | 185 | Right | Right | 4/10/1984 | 25 | Ocala,Florida | 2002 | 7 | 217 | SF |
| 21 | Thomas Neal | RF-LF | MLB | 6-1 | 205 | Right | Right | 8/17/1987 | 21 | Inglewood,California | 2005 | 36 | 1092 | SF |
| 55 | Kyle Nicholson | P | A+ | 5-11 | 205 | Right | Right | 7/31/1985 | 23 | Erie,Pennsylvania | 2007 | 7 | 224 | SF |
| 48 | Nick Noonan | SS | MLB | 6-0 | 180 | Left | Right | 5/4/1989 | 20 | Poway,California | 2007 | 1 | 32 | SF |
| 35 | Oliver Odle | P | AAA | 6-0 | 225 | Right | Right | 7/11/1985 | 23 | Pryor,Oklahoma | 2007 | 22 | 674 | SF |
| 48 | Paul Oseguera | P | AA | 6-0 | 190 | Left | Left | 1/6/1984 | 25 | La Jolla,California | 2006 | 16 | 476 | SF |
| 7 | Buster Posey | C | MLB | 6-1 | 205 | Right | Right | 3/27/1987 | 22 | Leesburg,Georgia | 2008 | 1 | 5 | SF |
| - | Edwin Quirarte | P | AA | 6-2 | 205 | Right | Right | 12/20/1986 | 22 | Ventura,California | 2008 | 5 | 147 | SF |
| 37 | Wilmin Rodriguez | P | AAA | 6-2 | 175 | Left | Left | 5/13/1985 | 24 | La Romana,Dominican Republic | 2006 | UDFA | | SF |
| - | Nestor Rojas | C | AAA | 6-0 | 200 | Right | Right | 11/18/1983 | 25 | Cabimas,Venezuela | 2005 | UDFA | | SF |
| - | Sergio Romo | P | MLB | 6-0 | 185 | Right | Right | 3/4/1983 | 26 | Brawley,California | 2005 | 28 | 852 | SF |
| 51 | Dan Runzler | P | MLB | 6-4 | 215 | Left | Left | 3/30/1985 | 24 | Santa Monica,California | 2007 | 9 | 284 | SF |
| - | Ryan Sadowski | P | MLB | 6-3 | 185 | Right | Right | 10/4/1982 | 26 | Miami,Florida | 2003 | 12 | 363 | SF |
| 38 | Ryan Shaver | P | A+ | 6-5 | 175 | Right | Right | 12/17/1984 | 24 | Fairbanks,Alaska | 2004 | 29 | 880 | SF |
| 1 | Skyler Stromsmoe | SS-RF | AAA | 5-10 | 170 | Both | Right | 3/30/1984 | 25 | Bow Island,Alberta | 2007 | UDFA | | SF |
| 33 | Clayton Tanner | P | AAA | 6-2 | 185 | Left | Left | 12/5/1987 | 21 | Mona Vale,Australia | 2006 | 3 | 89 | SF |
| - | Andres Torres | CF | MLB | 5-10 | 175 | Both | Right | 1/26/1978 | 31 | Aguadilla,Puerto Rico | 1998 | 4 | 117 | DET |
| 36 | Daniel Turpen | P | AAA | 6-4 | 215 | Right | Right | 8/17/1986 | 22 | McMinnville,Oregon | 2007 | 8 | 254 | SF |
| 29 | Angel Villalona | IF | A+ | 6-3 | 240 | Right | Right | 8/13/1990 | 18 | La Romana,Dominican Republic | 2007 | UDFA | | SF |
| 19 | Trey Webb | SS | AA | 6-0 | 170 | Right | Right | 2/11/1982 | 27 | Dallas,Texas | 2003 | 5 | 147 | MTL |
| 10 | Craig Whitaker | P | AAA | 6-4 | 170 | Right | Right | 11/19/1984 | 24 | Lufkin,Texas | 2003 | 1 | 34 | SF |
| - | Eliezer Zambrano | C | AA | 5-10 | 184 | Both | Right | 9/16/1986 | 22 | Valencia,Venezuela | 2007 | UDFA | | SF |
| 45 | C.J. Ziegler | 1B | AAA | 6-4 | 225 | Right | Right | 11/27/1985 | 23 | Tucson,Arizona | 2008 | 16 | 477 | SF |