| 12/31/2018 | ||||||
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| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
| Fernández, Santiago | MR | La Crosse Loggers | 25 | 06/04/1993 | Lewisville | USA | Left | Right | 6' 6" | 225 lbs | - |
| Fernández, Vicente | MR | Free Agent | 29 | 02/10/1989 | Cataño | PUR | Left | Left | 5' 9" | 174 lbs | - |
| Flores, Guillermo | LF | Free Agent | 30 | 09/01/1988 | San Antonio | USA | Right | Right | 6' 3" | 217 lbs | - |
| Flores, Jaime | 2B | Oakland Giants | 28 | 01/14/1990 | Ancón | PAN | Right | Right | 6' 2" | 208 lbs | - |
| Flores, Raúl | MR | Balzac Rams | 24 | 10/29/1994 | Pittsburgh | USA | Right | Right | 6' 2" | 235 lbs | - |
| Flynn, Tim | MR | Red Deer Wranglers | 27 | 06/11/1991 | San Diego | USA | Switch | Right | 6' 2" | 194 lbs | - |
| Foster, Paul | MR | Menlo Maniacs | 30 | 03/09/1988 | Wilmette | USA | Right | Right | 6' 1" | 207 lbs | - |
| Foster, Richie | LF | Oakland Giants | 29 | 08/18/1989 | Blue Springs | USA | Right | Left | 6' 3" | 227 lbs | - |
| Fox, Daniel | CF | Free Agent | 31 | 08/28/1987 | San Diego | USA | Right | Right | 5' 10" | 196 lbs | - |
| Francis, Dan | LF | Moose Jaw Ghostbusters | 25 | 01/16/1993 | Havelock | USA | Right | Left | 6' 4" | 168 lbs | - |
| Franco, Eduardo | SP | Oakland Giants | 27 | 05/14/1991 | West Mifflin | USA | Left | Left | 6' 0" | 228 lbs | - |
| Frazier, Danny | C | Free Agent | 28 | 01/14/1990 | San Diego | USA | Right | Right | 6' 0" | 180 lbs | - |
| Fredrick, David | MR | La Crosse Loggers | 32 | 08/10/1986 | Southborough | USA | Left | Left | 6' 1" | 213 lbs | - |
| Frías, Oliver | LF | Menlo Maniacs | 23 | 07/10/1995 | Havana | CUB | Left | Left | 6' 4" | 150 lbs | - |
| Futscher, Virisimo | CF | San Diego Smashers | 25 | 07/07/1993 | Monte Carmelo | BRA | Right | Right | 5' 9" | 166 lbs | - |
