Haywood Highsmith scored 18 points 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 as many as 45 in the fourth quarter. The 45-point edge was their largest since leading Chicago by 46 in a playoff game on May 8, 2013. Evan Mobley scored 15 points for Cleveland.

Both teams were short-handed Sunday. 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.

“Mentally, physically, we’re worn,” Cavaliers coach J.B. Bickerstaff said. “It’s on us all to figure it out. There’s no excuses. It doesn’t get any easier. But I just think tonight was one of those nights where collectively, it just set in on us.”

It was the first time since Jan. 30, 2008, that Cleveland had only one player in double figures; it was LeBron James that night.

“Just one of those nights,” Bickerstaff said.

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