What to Know
Josh Richardson scored 20 points for Miami, which lost its fourth straight. Hassan Whiteside added 19 points and 14 rebounds.
The Heat have now started their last two homestands with losses against the last-place teams in the Eastern and Western Conferences.
Kelly Olynyk left with a left shoulder strain midway through the first quarter and didn't return.
The Orlando Magic found the right setting for a rare road win.
Mario Hezonja scored 20 points and Jonathan Simmons made the tiebreaking dunk with 1:31 remaining as the Magic beat the Miami Heat 111-109 on Monday night.
Starting for the injured Aaron Gordon, Hezonja shot 7 of 14 from the field and 4 of 9 on 3-pointers as the Magic won their third road game in the last 24. They dropped Miami to just 13-11 at home.
"I'm not paying attention too much to my game because I know my game, I know what I can do, but as long as we are winning I am happy that I am helping my teammates," Hezonja said.
The Heat appeared to tie the game after Tyler Johnson was credited with a basket when Orlando's Bismack Biyombo was called for goaltending with 2.8 seconds remaining. A video review overturned the call.
"I think they can't review it unless the whistle blows so I think they're told if it's close, blow the whistle and we'll look at it," Orlando coach Frank Vogel said. "I didn't think it was really close. I would have been shocked if they called it a goaltend."
Marreese Speights' consecutive 3-pointers capped a 12-2 surge and his second one extended Orlando's lead to 99-89 with 11 minutes remaining. Speights finished with 12 points.
The Magic withstood a 16-2 Miami run late in the fourth quarter. Josh Richardson's layup with 2:53 remaining tied it at 109 before Simmons' dunk put Orlando ahead for good.
"It's a game of runs and we just were able to sustain their run long enough to win the game," Simmons said. "I just made plays down the stretch. My teammates and coach trusted me with the ball and I just made a play."
Richardson scored 20 points for Miami, which lost its fourth straight. Hassan Whiteside added 19 points and 14 rebounds, and Justise Winslow finished with 16 points.
The Heat have now started their last two homestands with losses against the last-place teams in the Eastern and Western Conferences in Orlando and Sacramento.
"We can't change our offense and be too drastic," Richardson said. "We just have to approach like any other day and be ready to work and fix what we do wrong."
Simmons and D.J. Augustin scored 16 points apiece for Orlando. Evan Fournier finished with 13 points.
The Heat missed all 12 3-point attempts in the first half. But 16 points in the paint helped Miami build a 29-17 lead in the first quarter.
Consecutive 3-pointers from Simmons keyed a 10-2 run the final 1:13 of the second quarter that got the Magic within 60-59 at halftime. Orlando then scored 34 points in the third.
"It's hard to explain what happened in that third quarter," Heat coach Erik Spoelstra said. "The first quarter and obviously the fourth quarter you love the way your team is competing and just laying it all out there to the end. I just don't have an explanation for the third quarter — very uninspiring."
Kelly Olynyk left with a left shoulder strain midway through the first quarter and didn't return. Olynyk fell hard to the floor after positioning for a charging foul on Biyombo. . Olynyk was scoreless, ending a streak of 11 consecutive games in double figures. . Miami made 20 free throws in the first two periods, a season high for a half.
The Heat have lost by six points or less in their current losing streak. The two-point margin against Orlando coupled the two-point deficit that started the streak in Cleveland Jan. 31. Miami also lost by six and four points against Philadelphia and Detroit, respectively.
"Just a few small breakdowns. In the last few games they've been critical," Richardson said.