Keys to victory: Heat 107, Nets 86

The four regular-season wins the Brooklyn Nets had over the Miami Heat proved to be irrelevant to Game 1 of their Eastern Conference semifinal matchup.

The Heat remained the only unbeaten team in this year’s playoffs, asserting their dominance with a 21-point win over the Nets.

The Heat never led the Nets by more than seven points in any of their regular-season meetings, but won by triple that in this contest.

Difference in the game: Points in the paint

The Heat outscored the Nets 52-28 in the paint, their most paint points scored against the Nets in any game this season. LeBron James scored as many points in the paint (10) in the first half as the whole Nets team en route to a 22-point night.

The Elias Sports Bureau noted that James became the youngest player in NBA history to record 4,000 playoff points. He’s also one of three players to have 4,000 points, 900 rebounds and 900 assists in postseason play. The other two are Michael Jordan and Kobe Bryant.

Big Three plays some defense

The Nets were 7-for-21 (1-for-8 from 3-point range) when shooting against James, Dwyane Wade and Chris Bosh. They shot 49 percent from the field when shooting against anyone else.

Ray Allen makes up for past struggles

Ray Allen scored 19 points off the bench for the Heat, more than anyone scored for the Nets in this game. He totaled 13 points in the first four games between the teams this season.

Garnett a nonfactor

Kevin Garnett had a double-double in Game 7 against the Toronto Raptors but was held scoreless in this contest. It is the first time in his 139-game playoff career that he did not score.