Lyons ended with 12 points and four assists.
Solomon Hill racked up 19 points for Arizona (13-0, 2-0 Pac-12), which was coming off a controversial overtime win over Colorado Thursday. Brandon Ashley also reached double figures for the Wildcats with 12 points and four assists.
The Utes (8-6, 0-2) got 13 points apiece from Jordan Loveridge and Jason Washburn.
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