<P> In basketball, a free throw is an unopposed attempt to score points from behind the free throw line . The National Basketball Association's (NBA) free throw percentage leader is the player with the highest free throw percentage in a given season . José Calderón holds the record for best free throw percentage in a season, which he accomplished with the Toronto Raptors in the 2008--09 NBA season . To qualify as a free throw percentage leader, the player must have at least 125 free throws made . Aside from the strike shortened 1998--99 and 2011--12 seasons, this has been the entry criteria since the 1974--75 season . </P> <Table> <Tr> <Td_colspan="2"> </Td> <Td_colspan="5"> Denotes player who is still active in the NBA </Td> </Tr> <Tr> <Td_colspan="2"> * </Td> <Td_colspan="5"> Inducted into the Naismith Memorial Basketball Hall of Fame </Td> </Tr> <Tr> <Td_colspan="2"> Player (X) </Td> <Td_colspan="5"> Denotes the number of times the player had been the free throw percentage leader up to and including that season </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="2"> Guard </Td> <Td> </Td> <Td> Forward </Td> <Td> </Td> <Td> Center </Td> </Tr> </Table>

Who has the highest free throw percentage in nba history