TUCSON, Ariz. — Kevin Parrom scored five of his 16 points in overtime after No. 3 Arizona staged an improbable late rally in regulation and the Wildcats escaped with a 92-83 victory over Colorado in their Pac-12 opener on Thursday night.
Colorado's Sabatino Chen banked in a 3-pointer at the end of regulation but officials waved it off after reviewing the video, saying the ball was on his fingertips as the backboard lights went on to show time had expired.
Arizona (13-0, 1-0) outscored the Buffaloes 10-2 over the final 1:35 of regulation to force the overtime. The Buffaloes missed four of six free throws in that stretch.
The Wildcats were down by 17 points in the first half and 16 with 12:40 to go in regulation.
It was the third close win for the Wildcats, who beat Florida 65-64 on Mark Lyons' layup at the buzzer and San Diego State 68-67 on Nick Johnson's blocked shot.
Askia Booker led Colorado (10-3, 0-1) with 18 points.
Arizona's 13-0 start is the second-best in school history and best since the Wildcats won their first 16 in 1932-33.
But they survived this one by a fraction of a second.
Chen scored a career-high 15 points, 12 in the second half. Josh Scott scored 15 points and Xavier Johnson had 13 for the Buffaloes, who beat Arizona by two points to win the Pac-12 tournament last season.
Lyons overcame an awful start to score a season-high 24 points, including two free throws that tied it at 80 with 9.2 seconds left in regulation.
Solomon Hill scored 15 points for the Wildcats. His 3-pointer with 1:35 to go in the second half cut the lead to 78-73.
Nick Johnson stole the ball from Andre Roberson and was fouled. Johnson made one of two free throws to cut it to 78-74 with 1:15 to play.
Scott made one of two free throws to make it 79-74 with 1:13 left. Lyons missed but Booker threw the ball away to Arizona's Jordin Mayes, whose layup cut the lead to 79-76 with 51 seconds on the clock.
Spencer Dinwiddie could make just one of two free throws with 44 seconds to go and it was 80-76. Lyons' driving layup cut it to 80-78 with 27 seconds to go.
Jeremy Adams was fouled and missed both free throws, then Lyons drove to the hoop, was fouled by Johnson and made both free throws as the crowd went crazy with 9.2 seconds left.
They fell silent when Chen banked in the shot at the end of regulation. But officials huddled around the monitor for several minutes before ruling the shot no good. Some replays seemed to show it had left his hands, while from other angles it appeared it didn't.
Referee James Breeding said the ball was on Chen's fingertips when the clock expired.
UCLA 79, California 65
At Los Angeles, Kyle Anderson had 19 points and 12 rebounds, and UCLA won its sixth straight.
Shabazz Muhammad added 16 points and Travis Wear had 15 for the Bruins (11-3), who have won six in a row for the first time since the 2010-11 season when they had two such streaks and last made the NCAA tournament.
USC 71, Stanford 69
At Los Angeles, Jio Fontan scored 15 points including a pair of tiebreaking free throws with 6.9 seconds to play and USC pulled out a victory over Stanford.
Eric Wise added 14 points for USC (6-8). Four of the Trojans' losses have come against schools that are currently among the top 20 in the nation.