The Razorbacks had five 3-pointers during that 17-5 run, including a pair by Young. Auburn center Rob Chubb was called for a foul after Powell's 3, setting up Wade's own long-range shot.
Auburn came back over the next five minutes and cut it to 61-58 on Jordon Granger's alley oop from Denson with 5:08 remaining.
Powell and Young aborted that comeback.
The Tigers trailed twice by nine points in the first half, but took a 35-33 lead into the locker room. Asauhn Dixon-Tatum scored on a putback with 4 seconds left.
The Razorbacks scored the first seven points of the second half to go ahead 40-35 and didn't give it up.