Atlanta won its second in a row to climb above the .500 mark and ended what had been the first two-game winning streak of the season for the Cavaliers.
Horford was one of seven Atlanta players to reach double figures with 22 points. The Hawks outscored Cleveland 37-20 in the opening period and were not threatened the rest of the way.
Dion Waiters led Cleveland with 30 points, his largest total of the season.
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