The Heat almost had an epic collapse after leading by 29 points in the third quarter. Led by a hard-charging Lou Williams and Evan Turner, the Sixers sliced Miami’s lead to four points.
James, though, refused to let the lead completely slip away. He hit a pull-up jumper and sank a pair of free throws in the final 90 seconds to help the Heat end a four-game road losing streak.
The Heat had lost two consecutive games overall.
Turner had 13 points, Williams 12, and Andre Iguodala had 11 points and 10 rebounds.
MAGIC 86, NETS 70
In Orlando, Fla., Dwight Howard scored 18 points, Jameer Nelson and Glen Davis each had 13 and Orlando easily beat New Jersey.
Ryan Anderson added 12 points and 11 rebounds for the Magic, who built a 20-point lead and cruised from there.
Orlando won for the fourth time in five games and extended its winning streak against the Nets to 10.
Reserve Gerald Green scored 15 points to lead the Nets. DeShawn Stevenson, who scored 11 points, was the only New Jersey starter to reach double figures.
The Nets have lost three of their past four games.
KNICKS 115, PACERS 100
In New York, Tyson Chandler scored 16 points, Jeremy Lin had 13, and New York rolled to its second consecutive dominant victory under Mike Woodson.
Reserves JR Smith (16 points) and Steve Novak (12) had big games again for the Knicks in the opener of a home-and-home series.
Two nights after beating Portland by 42 on the day Mike D’Antoni resigned, New York led this one by as much as 32 and shut down Pacers star Danny Granger, who had angered them by saying Friday and Saturday were two “very winnable games.”
TRAIL BLAZERS 100, BULLS 89
In Chicago, LaMarcus Aldridge scored 21 points and Wesley Matthews added 18 as Portland beat Chicago, which was without leading scorer Derrick Rose.
After an emotional win over the Heat without Rose on Wednesday, the Bulls were unable to win a second game in a row with the reigning MVP sitting on the bench with a strained groin.
One day after trading starters Gerald Wallace and Marcus Camby, and firing head coach Nate McMillan, the Blazers hung with the Bulls through three quarters and pulled away in the fourth.
Carlos Boozer finished with 22 points and 14 rebounds and Luol Deng added 19 points for the Bulls, who fell to 8-4 this season with Rose sidelined.