With less than a week until the start of training camp the Miami Heat continue to work through roster possibilities with veteran guard Roger Mason Jr. the latest to emerge on the team's workout list.

Even with 13 players under guaranteed contract for 2013-14 and with 18 players already invited to camp the Heat continue to audition candidates with journeyman guard Von Wafer among those at recent sessions.

Mason Jr. 33 who recently was elected vice president of the NBA's player union remains a free agent after spending last season in New Orleans.

Teams can carry up to 20 players during camp but must reduce to between 13 and 15 by the starting of the regular season which opens Oct. 29 for the Heat against the Chicago Bulls at AmericanAirlines Arena.