Patrick Beverley got off to a fast start for No. 18 Arkansas, and Sonny Weems did the rest.
"I thought Sonny was the best player on the court in the second half. When you play the game that way, you get rewarded for it," said coach John Pelphrey, who took over at Arkansas in April after Stan Heath was fired.
The Razorbacks will meet Providence in Friday's semifinals. The Friars beat Temple 66-64 earlier Thursday.
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