Brandon Ashley led the Wildcats (11-0) with 18 points and Nick Johnson had 14, including six free throws in the final 25 seconds to secure the victory.
Johnson gave Arizona the lead for good with a pair of shots from the line with 24.6 seconds left in the game. Arizona was able to weather a 3-point shot by Michigan's Spike Albrecht with 2 seconds remaining that pulled the Wolverines (6-4) to 71-70.
Albrecht ended the day with 10 points. Glenn Robinson led Michigan with 20, but scored only four points in the second half during which Michigan was outscored 44-33.
Arizona out-rebounded Michigan 32-20 and went 14-for-15 from the free throw line. Michigan was sharp from the line as well, sinking 14-of-17 attempts.
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