Quicker and more athletic than the veteran Celtics, who were hampered by a series of nagging injuries, the Heat again met the challenge of the defending Eastern Conference champions and have a commanding lead in the best-of-seven second-round series with Game Three set for Saturday in Boston.
In the Western Conference, the Oklahoma City Thunder slowed the inside force of the Memphis Grizzlies in a 111-102 victory that levelled their series 1-1.
Kevin Durant scored 26 points and the Thunder held red-hot Zach Randolph to 2-for-13 shooting as Oklahoma City bounced back from their series-opening loss to the giant-killing Grizzlies.
In Miami, LeBron James took his turn to carry the load with 24 of his game-high 35 points coming in the second half, while Game One standout Dwyane Wade added 28.
“This is a great team we’re going against right now,” James told reporters. “We’re playing as hard as we can defensively and just trying to wear them down throughout the course of the game.”