LeBron James again rose to the occasion for Miami, posting 32 points, 11 assists and 10 rebounds to lead the Heat to a 103-100 overtime victory over the visiting San Antonio Spurs, knotting their NBA Final series at three games apiece.

Also coming up big for the defending champion Heat was veteran guard Ray Allen, who sent the game into overtime with a three-pointer just 5.2 seconds before the buzzer.

Mario Chalmers chipped in 20 points for the Heat, while a struggling Dwyane Wade scored only 14 points.

The Spurs were led by 37-year-old Tim Duncan, with 30 points and 17 rebounds, though he went scoreless after the third quarter. Kawhi Leonard had 22 points and 11 rebounds for San Antonio, who are looking for their first NBA title since 2007.

The decisive Game 7 is set for Thursday night at Miami's American Airlines Arena. EFE