(Miami, FL) -- The Spurs cruised to a 107-86 win over the Heat in Game Four of the NBA Finals at AmericanAirlines Arena behind 20 points, 14 rebounds, three steals and three blocks from Kawhi Leonard. Boris Diaw filled up the stat sheet with eight points, nine boards and nine assists as San Antonio took a commanding 3-1 lead over the Heat. Tony Parker added 19 points, while Tim Duncan posted 10 points and 11 boards in the victory. LeBron James showed up for the Heat, but he didn't get much help from his teammates. James dropped in 28 points on 10-of-17 shooting with eight rebounds. Dwyane Wade shot 3-of-13 from the field and 4-of-8 from the line on his way to 10 points. The rest of Miami's starting lineup besides James scored 28 points, the same amount as LeBron. San Antonio can close out the series in Game Five at home on Sunday.