Sankey run for a touchdown and Keith Price threw for two more on 14-of-25 attempts for 165 yards as the Huskies (4-0, 1-0 Pac-12) recorded a fourth straight win to start a season for the first time since 2001.
B.J. Denker was intercepted twice for the Wildcats (3-1, 0-1), gaining just 119 yards on 14-of-35 passes.
Ka'Deem Carey rushed for 132 yards and a touchdown for Arizona.
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