Nick Johnson scored 22 points and No. 1 Arizona withstood UCLA's late 15-1 run to beat the Bruins 79-75 Thursday night, equaling the best start in school history at 16-0.
The Wildcats (3-0 Pac-12) held on despite blowing a 13-point lead with 6:16 to play and committing a season-worst 17 turnovers.
Kaleb Tarczewski made all six of his field goal attempts and scored 16 points for the Wildcats, who snapped a three-game skid against the Bruins in the lone regular-season meeting between the longtime conference powers.
The 1931-32 Wildcats also began the season 16-0.
Freshman Zach LaVine hit a 3-pointer that got UCLA to 77-75 with 15 seconds left, but he missed another one with 2 seconds to go that would have left the Bruins down one.