MIAMI — Cleveland moved into Round 2 with the most lopsided series win in NBA playoff history.
Donovan Mitchell scored 22 points, De'Andre Hunter added 19 and the Cavaliers led by as many as 60 points before beating the Miami Heat 138-83 on Monday night to sweep their Eastern Conference first-round series in four games.
Ty Jerome had 18 points, Evan Mobley added 17 and Jarrett Allen had 14 points, 12 rebounds and six steals for the Cavaliers. Cleveland won the series by a combined 122 points, one more than the previous record for series margin set by Denver over New Orleans in 2009.
''We came out here with a goal in mind," Mitchell said.
The 55-point margin in Game 4 was the fourth-biggest playoff win ever. The record is 58 points, done twice: Minneapolis over St. Louis in 1956 and Denver over New Orleans in 2009. The Los Angeles Lakers beat Golden State by 56 points in 1973.
Nikola Jovic led the Heat with 24 points. Ban Adebayo scored 13, while Pelle Larsson and Andrew Wiggins each added 12 for Miami.
''Damn, it was humbling. This series was humbling. These last two games were embarrassing,'' Heat coach Erik Spoelstra said. ''But Cleveland's also a very good team. ... They showed us why we weren't ready for that.''
Cleveland will play either Indiana or Milwaukee in the Eastern Conference semifinals. The Pacers lead that series 3-1; regardless of whether the Pacers or Bucks advance, Game 1 of that series would be in Cleveland and not played until Saturday at the earliest.