Dion Waiters watched his 3-point try bounce off the rim, ricochet off the top of the backboard, then hit the rim again and somehow drop through the net.

It was a huge shot in the final moments, and a lucky one.

That's what it took to end the Boston Celtics' 16-game winning streak.

Goran Dragic scored 27 points, Waiters had 26 with a pair of big 3-pointers in the final minutes and the Miami Heat held on to win 104-98 on Wednesday night and become the first team to beat the Celtics since Oct 18.

"You can tell they were locked into this game," Celtics star Kyrie Irving said. "They wanted it and proved it."

Boston trailed by as many as 18, and was down by 14 midway through the fourth quarter.

Rallies were a hallmark throughout Boston's winning streak - the comeback Celtics had overcome 18-point deficits against Oklahoma City and Charlotte, a 17-point hole against Golden State, a 16-pointer against Atlanta and rallied from 13 down to win in Dallas earlier this week.

They almost did it again.

A 13-0 run got Boston to 91-90 with 3:14 left, and that's when Waiters took over. The next six points were his - first the 3-pointer that bounced three times before falling, then another one from the left corner when the words of Heat coach Erik Spoelstra were echoing in his head.

When Waiters drives and a bigger defender comes his way, he likes to go airborne for a pass or some sort of acrobatic layup.

Spoelstra has tried to break him of that habit, and Waiters kept going all the way to the corner with the Celtics' Al Horford forced to cover him. Waiters created space, then let fly with a 3-pointer for a 97-90 lead.

"I knew I had what I wanted," Waiters said.

For a change, so did the Heat. An up-and-down start to the season is on an upswing again, and Spoelstra, who put Miami through intense practices on Monday and Tuesday after a 25-point home loss Sunday to Indiana, moved on quickly after the win.

"Our identity is to be tough and we haven't shown that consistently enough," Spoelstra said.

"Pockets, here and there. It's that kind of effort to get a six-point win. Nothing is guaranteed, but that has to be what we embrace all the time. So, good. How about next game?"

Tyler Johnson scored 16 points for Miami, which shot 49 percent and outrebounded the Celtics 48-37. Irving scored 23 points for Boston. Jayson Tatum added 18, and Jaylen Brown and Marcus Morris each had 14.

The Celtics started 0-2, and hadn't lost since. But coach Brad Stevens insisted he hadn't spent time thinking about the streak, focusing instead on the bigger picture.

"Like I said, 16 straight is a little bit of a mirage," Stevens said.

The run is the joint fourth longest in Celtics history. Boston won 19 in a row in the 2008-09 season, 18 straight in 1981-82 and 17 straight in 1959-60.

The other 16-game run was in 1964-65. In NBA history, 21 streaks have lasted longer than 16 games.

Miami won the third quarter 25-22, which doesn't sound like much - but it was significant to the Heat.

That three-point margin, somewhat unbelievably, is their fourth best in a third quarter this season. Miami had been outscored 60-29 in its previous two third quarters.