Breaking News:Omg this is not happening Cavaliers just got hit with sad and terrifying report

Haywood Highsmith scored 18 points, part of a 59-point effort by Miami’s reserves, and the Heat built what was their biggest lead in more than a decade on the way to beating the Cleveland Cavaliers 121-84 on Sunday night

Bam Adebayo had 15 points and 16 rebounds and Jimmy Butler scored 15 points for the Heat, who led by 45 in the fourth quarter. Their biggest lead this season entering Sunday was 33, also against Cleveland on Nov. 22, and the 45-point cushion was their largest since leading Chicago by 46 in a playoff game on May 8, 2013.

Miami started the day seventh in the Eastern Conference and ended there as well, tied with Philadelphia at 39-32. The 76ers won at the Los Angeles Clippers earlier Sunday, but currently trail the Heat because of the head-to-head tiebreaker.

Evan Mobley scored 15 points for Cleveland (43-28), which lost for the seventh time in 10 games but remained No. 3 in the East, a half-game ahead of New York.

Terry Rozier and Thomas Bryant each scored 14 for Miami. It was Miami’s biggest victory margin of the season and Cleveland’s most lopsided loss; the previous entry in both cases was also a Heat-Cavs game, the 129-96 win by Miami in November.

Cleveland got Mobley back after a nine-game absence with an ankle issue, but was again without Donovan Mitchell, Max Strus and Dean Wade. Miami played without Tyler Herro, Kevin Love, Duncan Robinson and Jaime Jaquez Jr.

The Heat, who snapped a three-game home slide, got a buzzer-beating layup from Rozier to end the first quarter with a 30-22 lead. Rozier did the same thing to end the second quarter, that score pushing the Miami margin out to 60-39.

And in the third, it became a runaway. A 23-2 run over a five-minute stretch wound up pushing Miami’s lead to 86-46. Cleveland pulled all five starters just 3 1/2 minutes into the third and four of them – Isaac Okoro, Jarrett Allen, Caris LeVert and Darius Garland – stayed there the rest of the way