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| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
| Aguilar, Félix | CL | New York Knights | 32 | 03/08/1986 | Milpitas | USA | Right | Right | 5' 10" | 208 lbs | $800,000 |
| Aguilar, Rodrigo | SP | Vista Panthers | 25 | 05/11/1993 | Detroit | USA | Right | Right | 6' 0" | 225 lbs | $3,900,000 |
| Aicón, Alfredo | SP | Los Cabos Cartel | 34 | 11/22/1984 | Chinautla | GUA | Switch | Right | 5' 8" | 204 lbs | $15,500,000 |
| Albright, Shawn | LF | Free Agent | 32 | 12/01/1986 | Queen Creek | USA | Left | Left | 6' 0" | 216 lbs | - |
| Aldridge, Stan | SP | Maui Tropics | 24 | 11/25/1994 | Virginia Beach | USA | Left | Left | 6' 3" | 245 lbs | $400,000 |
| Alemán, José | RF | Jacksonville Jackhammers | 28 | 11/29/1990 | Baltimore | USA | Right | Left | 6' 0" | 160 lbs | $400,000 |
| Alfonso, Manuel | MR | Vista Panthers | 30 | 09/10/1988 | Palma Soriano | CUB | Right | Left | 6' 0" | 196 lbs | $690,000 |
| Allan, Bill | SP | Kansas City Cougars | 32 | 12/01/1986 | Winnipeg | CAN | Right | Left | 6' 0" | 216 lbs | $13,000,000 |
| Alomar, José | LF | Vista Panthers | 25 | 04/21/1993 | San Juan | PUR | Switch | Right | 6' 0" | 210 lbs | $450,000 |
| Alou, Luis | RF | New Orleans Looters | 30 | 03/25/1988 | Santiago | DOM | Right | Right | 6' 1" | 208 lbs | $5,500,000 |
| Alston, George | DH | San Francisco Bandits | 32 | 05/07/1986 | Burnsville | USA | Left | Left | 5' 11" | 192 lbs | $3,590,000 |
| Alvarado, António | MR | Boston Rebels | 26 | 05/21/1992 | Jovellanos | CUB | Left | Left | 6' 0" | 210 lbs | $650,000 |
| Alvarado, Fernando | MR | Seattle Pikes | 29 | 10/21/1989 | Lzpez Mateos | MEX | Left | Left | 6' 1" | 193 lbs | $760,000 |
| Álvarez, Jorge | MR | Free Agent | 31 | 04/20/1987 | Murray | USA | Left | Left | 6' 0" | 214 lbs | - |
| Álvarez, José | 1B | Chicago Machine | 31 | 02/02/1987 | Arandas | MEX | Left | Left | 6' 1" | 193 lbs | $8,000,000 |
| Anderson, Rocky | LF | Seattle Pikes | 30 | 03/13/1988 | Brooklyn | USA | Left | Right | 6' 2" | 228 lbs | $2,000,000 |
| Anderson, Roger | SS | Free Agent | 32 | 06/09/1986 | West New York | USA | Right | Right | 6' 1" | 175 lbs | - |
| Antelo, Victor | C | Austin River Sharks | 32 | 10/11/1986 | Pradópolis | BRA | Right | Right | 6' 3" | 223 lbs | $20,200,000 |
| Aoki, Kazushige | SS | Maui Tropics | 24 | 06/18/1994 | Kashiwa | JPN | Right | Right | 6' 0" | 138 lbs | $750,000 |
| Aoki, Kentaro | RF | Boston Rebels | 31 | 09/21/1987 | Obama | JPN | Right | Right | 6' 1" | 155 lbs | $800,000 |
| Arévalo, Carlos | SP | Free Agent | 33 | 06/03/1985 | Santa Catarina | MEX | Right | Right | 6' 4" | 227 lbs | - |
| Árias, Tony | MR | Jacksonville Jackhammers | 24 | 01/24/1994 | Puerto Plata | DOM | Left | Right | 6' 2" | 205 lbs | $650,000 |
| Arthur, Tony | SP | Seattle Pikes | 33 | 06/01/1985 | Lyndhurst | USA | Left | Right | 6' 3" | 201 lbs | $2,000,000 |
| Asano, Kyoshi | MR | Indianapolis Lions | 23 | 05/31/1995 | Hirara | JPN | Right | Right | 6' 3" | 235 lbs | $400,000 |
| Atkins, Jeremy | 3B | Seattle Pikes | 31 | 08/23/1987 | Grand Prairie | USA | Right | Right | 6' 2" | 164 lbs | $1,000,000 |
| Austin, Peter | SP | Seattle Pikes | 33 | 02/18/1985 | Lansing | USA | Left | Left | 6' 2" | 214 lbs | $2,400,000 |
| Ayala, Ramón | CF | New Orleans Looters | 22 | 09/11/1996 | Holguín | CUB | Left | Left | 6' 1" | 150 lbs | $400,000 |
| Ayala, Víctor | 1B | Toronto Titans | 28 | 06/11/1990 | Bowie | USA | Right | Right | 6' 3" | 210 lbs | $400,000 |
| Azuma, Masafumi | SS | St Charles Sheens | 24 | 12/03/1994 | Ueda | JPN | Switch | Right | 6' 2" | 210 lbs | $400,000 |
