LeBron played the first 45 minutes of the game and went 19-for-26 from the field. LeBron really had his fadeaway jump shot going in the first half and that opened up the rest of his game.
The Celtics had no answer. Rajon Rondo led Boston with 21 points and 10 assists but did have seven turnovers.
The Celtics were just 1-for-14 from three in the game. Paul Pierce went 0-for-6 from three and was 4-for-18 from the field in general and scored just nine points.
Dwyane Wade was the only other Heat player to score in double-figure with 17.
Chris Bosh played 28 minutes and scored seven points with six rebounds.
The Heat will go back home Saturday night for Game 7 to try and get past the Celtics. The winner of that game will play Game 1 of the NBA Finals in Oklahoma City Tuesday night.