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| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
| Ramírez, Jesús | 2B | Wisconsin Rapids Rangers | 24 | 06/05/1994 | Garden Grove | USA | Right | Right | 6' 4" | 180 lbs | - |
| Ramírez, Manuel | CF | Erie Jaxx | 25 | 10/27/1993 | Santiago de Cuba | CUB | Left | Right | 6' 0" | 185 lbs | - |
| Ramírez, Paolo | MR | Wisconsin Rapids Rangers | 31 | 07/24/1987 | Bend | USA | Right | Right | 5' 8" | 190 lbs | - |
| Ramírez, Rafael | MR | Manhatten Meatheads | 18 | 08/28/2000 | Cocoyoc | MEX | Right | Right | 6' 7" | 230 lbs | - |
| Ramos, António | C | Bemidji Benders | 24 | 02/26/1994 | Jersey City | USA | Right | Right | 6' 1" | 180 lbs | - |
| Ramos, Francisco | SP | Erie Jaxx | 26 | 03/26/1992 | Managua | NCA | Right | Right | 6' 0" | 220 lbs | - |
| Ramos, Jesús | 2B | Manhatten Meatheads | 19 | 06/01/1999 | Panama | PAN | Right | Right | 5' 9" | 175 lbs | - |
| Ramos, Jesús | MR | Manhatten Meatheads | 21 | 06/26/1997 | Worcester | USA | Left | Right | 5' 11" | 200 lbs | - |
| Ramos, Marcos | MR | Free Agent | 25 | 05/31/1993 | Peñuelas | PUR | Right | Left | 6' 3" | 227 lbs | - |
| Ramos, Pablo | 3B | Wisconsin Rapids Rangers | 32 | 11/02/1986 | New York | USA | Right | Right | 6' 1" | 191 lbs | - |
| Ramsey, Bailey | SS | Wisconsin Rapids Rangers | 22 | 01/26/1996 | Omaha | USA | Right | Right | 6' 1" | 195 lbs | - |
| Randall, Joseph | LF | Manhatten Meatheads | 22 | 11/02/1996 | North Charleston | USA | Right | Right | 6' 0" | 185 lbs | - |
| Rego, Felipe | LF | Columbia 08s | 19 | 09/27/1999 | Barcelona | VEN | Right | Right | 6' 0" | 190 lbs | - |
| Reid, Jim | CF | Cincinnati Pride | 21 | 12/19/1997 | Phoenix | USA | Left | Right | 6' 0" | 170 lbs | - |
| Reyes, Felipe | MR | Barry's Bay Orioles | 23 | 12/23/1995 | New York | USA | Right | Right | 6' 6" | 245 lbs | - |
| Rhodes, John | SP | Free Agent | 28 | 05/19/1990 | Chicago | USA | Right | Right | 6' 0" | 217 lbs | - |
| Rice, Micheal | 1B | Lee's Summit Tigers | 32 | 10/05/1986 | Glenview | USA | Right | Right | 6' 3" | 146 lbs | - |
| Ríos, José | CF | Wisconsin Rapids Rangers | 22 | 04/22/1996 | Juana Díaz | PUR | Right | Right | 5' 9" | 165 lbs | - |
| Rivera, Andrés | MR | Barry's Bay Orioles | 23 | 03/01/1995 | Caracas | VEN | Switch | Right | 6' 0" | 240 lbs | - |
| Rivera, Ramiro | MR | Columbia 08s | 19 | 04/04/1999 | Celaya | MEX | Left | Right | 6' 5" | 245 lbs | - |
| Roach, Terry | MR | Free Agent | 29 | 10/18/1989 | Quincy | USA | Right | Right | 6' 7" | 234 lbs | - |
| Robinson, Don | 2B | Barry's Bay Orioles | 24 | 04/18/1994 | Joliet | USA | Right | Right | 6' 1" | 176 lbs | - |
| Rodríguez, Cisco | MR | Bemidji Benders | 24 | 04/12/1994 | Columbia | USA | Switch | Right | 6' 2" | 260 lbs | - |
| Rodríguez, Jorge | SS | Erie Jaxx | 22 | 05/31/1996 | Chula Vista | USA | Right | Right | 6' 0" | 180 lbs | - |
| Rodríguez, José | 3B | Lee's Summit Tigers | 21 | 11/07/1997 | Montgomery | USA | Left | Right | 6' 1" | 180 lbs | - |
| Rodríguez, Ramón | 2B | Plumstead Eagles | 22 | 09/15/1996 | Rosario | ARG | Right | Right | 6' 0" | 210 lbs | - |
| Rogers, Dan | SP | Plumstead Eagles | 19 | 03/20/1999 | Chicago | USA | Left | Left | 6' 0" | 195 lbs | - |
| Rogers, Phil | 1B | Minnesota Death Stars | 23 | 04/24/1995 | New York | USA | Left | Right | 6' 4" | 235 lbs | - |
| Rojas, Juan Jose | C | Erie Jaxx | 23 | 08/02/1995 | Arecibo | PUR | Left | Right | 6' 3" | 215 lbs | - |
| Romero, Ricardo | 3B | Columbia 08s | 24 | 11/15/1994 | Hormigueros | PUR | Left | Right | 5' 11" | 187 lbs | - |
| Rosado, Miguel | 2B | Free Agent | 22 | 12/09/1996 | Bayamón | PUR | Switch | Right | 5' 11" | 210 lbs | - |
| Ross, Todd | 3B | Free Agent | 26 | 05/04/1992 | Moorhead | USA | Switch | Right | 6' 1" | 180 lbs | - |
| Ruíz, Aurelius | 1B | Cincinnati Pride | 24 | 05/18/1994 | San Juan | PUR | Right | Right | 6' 0" | 233 lbs | - |
| Rutherford, Sherman | SP | Lee's Summit Tigers | 31 | 11/25/1987 | Schaumburg | USA | Right | Right | 6' 6" | 204 lbs | - |
