| No. | Player | Pos | Bat | Thw | Ht | Wt | DOB | Exp | Birthplace |
|---|---|---|---|---|---|---|---|---|---|
| 61 | Arroyo, Bronson | P | R | R | 6-4 | 194 | 02/24/77 | 10 | Key West, FL |
| 34 | Bailey, Homer | P | R | R | 6-3 | 210 | 05/03/86 | 3 | La Grange, TX |
| 45 | Bray, Bill | P | L | L | 6-3 | 221 | 06/05/83 | 3 | Virginia Beach, VA |
| 51 | Burton, Jared | P | R | R | 6-5 | 228 | 06/02/81 | 3 | Westminster, SC |
| 48 | Cordero, Francisco | P | R | R | 6-3 | 238 | 05/11/75 | 11 | Santo Domingo, Dominican Republic |
| 47 | Cueto, Johnny | P | R | R | 5-10 | 201 | 02/15/86 | 2 | San Pedro de Macoris, Dominican Republic |
| 46 | Fisher, Carlos | P | R | R | 6-4 | 225 | 02/22/83 | R | Duarte, CA |
| 39 | Harang, Aaron | P | R | R | 6-7 | 261 | 05/09/78 | 8 | San Diego, CA |
| 52 | Herrera, Daniel Ray | P | L | L | 5-6 | 165 | 10/21/84 | R | Odessa, TX |
| 56 | Maloney, Matt | P | L | L | 6-4 | 220 | 01/16/84 | R | Sandusky, OH |
| 40 | Masset, Nick | P | R | R | 6-4 | 235 | 05/17/82 | 4 | St. Petersburg, FL |
| 33 | Owings, Micah | P | R | R | 6-5 | 220 | 09/28/82 | 3 | Cumming, GA |
| 58 | Ramirez, Ramon | P | R | R | 6-0 | 188 | 09/16/82 | R | Cagua, Venezuela |
| 53 | Rhodes, Arthur | P | L | L | 6-2 | 212 | 10/24/69 | 18 | Waco, TX |
| 54 | Thompson, Daryl | P | R | R | 6-0 | 184 | 11/02/85 | 1 | La Plata, MD |
| 50 | Viola, Pedro | P | R | L | 6-1 | 185 | 06/29/83 | R | San Juan de la Maguana, Dominican Republic |
| 38 | Wells, Kip | P | R | R | 6-3 | 205 | 04/21/77 | 11 | Houston, TX |
| No. | Player | Pos | Bat | Thw | Ht | Wt | DOB | Exp | Birthplace |
|---|---|---|---|---|---|---|---|---|---|
| 29 | Hanigan, Ryan | C | R | R | 6-0 | 201 | 08/16/80 | R | Washington, DC |
| 55 | Hernandez, Ramon | C | R | R | 6-0 | 225 | 05/20/76 | 11 | Caracas, Venezuela |
| 30 | Tatum, Craig | C | R | R | 6-1 | 224 | 03/18/83 | R | Hattiesburg, MS |
| No. | Player | Pos | Bat | Thw | Ht | Wt | DOB | Exp | Birthplace |
|---|---|---|---|---|---|---|---|---|---|
| 64 | Francisco, Juan | 3B | L | R | 6-2 | 180 | 06/24/87 | R | Bonao, Dominican Republic |
| 7 | Janish, Paul | SS | R | R | 6-2 | 193 | 10/12/82 | R | Houston, TX |
| 4 | Phillips, Brandon | 2B | R | R | 6-0 | 195 | 06/28/81 | 8 | Raleigh, NC |
| 27 | Rolen, Scott | 3B | R | R | 6-4 | 250 | 04/04/75 | 14 | Jasper, IN |
| 23 | Rosales, Adam | 3B | R | R | 6-2 | 195 | 05/20/83 | R | Chicago, IL |
| 15 | Sutton, Drew | SS | S | R | 6-3 | 185 | 06/30/83 | R | Jackson, TN |
| 19 | Votto, Joey | 1B | L | R | 6-3 | 233 | 09/10/83 | 3 | Toronto, Canada |
| No. | Player | Pos | Bat | Thw | Ht | Wt | DOB | Exp | Birthplace |
|---|---|---|---|---|---|---|---|---|---|
| 28 | Balentien, Wladimir | LF | R | R | 6-2 | 218 | 07/02/84 | 3 | Willemstad, Netherlands Antilles |
| 32 | Bruce, Jay | RF | L | L | 6-3 | 225 | 04/03/87 | 2 | Beaumont, TX |
| 21 | Dickerson, Chris | LF | L | L | 6-3 | 228 | 04/10/82 | R | Hollywood, CA |
| 31 | Gomes, Jonny | LF | R | R | 6-1 | 225 | 11/22/80 | 7 | San Francisco, CA |
| 17 | Nix, Laynce | LF | L | L | 6-1 | 220 | 10/30/80 | 7 | Houston, TX |
| 6 | Stubbs, Drew | CF | R | R | 6-4 | 205 | 10/04/84 | R | Texarkana, TX |
| 3 | Taveras, Willy | CF | R | R | 6-0 | 160 | 12/25/81 | 6 | Tenares, Dominican Republic |
| No. | Player | Pos | Injury | Status | Comment |
|---|---|---|---|---|---|
| 26 | Castillo, Wilkin | C | Right shoulder surgery - out for season | On 60-day DL | Expected return 03/30/10 |
| 57 | Lincoln, Mike | P | Bulging disc in neck | On 60-day DL | Expected return 04/01/10 |
| 36 | Volquez, Edinson | P | Right elbow surgery - out for season | On 60-day DL | Expected return 04/05/10 |