LeBron James and Jimmy Butler went toe-to-toe like heavyweight champions, with the Lakers trying to close out another title and the Heat trying to stave off elimination. And Butler landed the punch he needed.

Butler, battling through fatigue for a triple-double, carried Miami to a 111-108 victory in Game 5 of the NBA Finals on Friday night in Lake Buena Vista, Fla., a tilt the Heat seemed to have won, then lost, then won again.

The Heat blew an 11-point edge, and there were seven lead changes in the final three minutes. The last came on Butler’s free throws that gave Miami a 109-108 edge. But it wasn’t safe until the Lakers’ Danny Green missed a 3-pointer with 7.1 seconds left and teammate Markieff Morris threw the ball away with just 2.2 on the clock.

The Heat clinched the game on the turnover, but won it thanks to Butler. Miami coach Erik Spoelstra did his part, calling timeout after timeout just to give Butler breathers and exact every bit that his star wing had left.

“Nothing. I left it all out there on the floor, along with my guys. That’s how we’re going to have to play from here on out. It’s win or win for us,” said Butler, who finished with 35 points, 12 rebounds and 11 assists. “That’s what my team asked of me. That’s what they need me to do.”

They needed every bit of that, playing without injured Goran Dragic and with Bam Adebayo at less than his usual self since returning from his Game 1 neck injury. Adebayo mustered just 13 points and four boards, but Duncan Robinson, an undrafted second-year pro out of Michigan, picked up the slack with 26 points.

James was dominant with 40 points, 13 rebounds and seven assists. And Anthony Davis, despite aggravating his heel contusion in the first quarter and hurting it again in the fourth, had 28 points and 12 boards. But it wasn’t enough to keep the Heat from sending it to Game 6 on Sunday.

“He was able to make one more play than I was able to make tonight and come away with a victory,” James said of Butler.

“We live for these moments. The work we put in, we’re built for this,” Butler said. “We’re still fighting. We’re in it to win it. We’re not backing down. We’re not scared of nobody.”

Clearly not. They had command most of the night, and led 93-82 early in the fourth quarter after a pair of Adebayo free throws. The Lakers responded with a 17-3 run, spurred by James. A breakaway by Kentavious Caldwell-Pope capped the spurt and put the Lakers up by three with 5 ½ to play.

That’s when Butler and James turned this into a classic duel.

After Butler found Robinson for a 27-footer that gave Miami a 101-99 lead with 3:16 remaining, he and James scored every point until 21.8 seconds left.

James’ free throws knotted it, but Butler’s pull-up broke the tie. James’ and-one gave the Lakers a 104-103 lead with 1:34 left, but Butler responded with a 7-footer. And after James’ basket put Los Angeles up inside a minute, Butler sank two more foul shots to put Miami back ahead with 47.6 seconds to play.

Davis’ put-back beat the shot clock for a 108-107 lead with 21.8 ticks remaining, but it didn’t stand. Butler went up strong into Davis, earning another trip to the line. He sank both with 16.8 seconds on the clock to put Miami back ahead.

James drew Butler and Robinson, and kicked out to Green, but he missed. And though Morris grabbed the offensive rebound, he threw away a lob to Davis. The Lakers’ Tyler Herro iced it from the line.

“Both teams were throwing haymakers,” Lakers coach Frank Vogel said.

“We just needed to get one stop. We felt like if we could get one stop, we could do something on the offensive end,” James said. “But we got a hell of a look to win the series. Didn’t go down. And we got the offensive rebound, we turned the ball over.”