TUCSON, Ariz. -- Allen Crabbe scored 31 points and fueled a big Cal run early in the second half as the unranked Bears upset No. 7 Arizona 77-69 at McKale Center on Sunday.
Crabbe scored 19 points after halftime and hit 12 of 15 shots from the field, including 4 of 7 from 3-point range.
Arizona's Mark Lyons hit a 3-point shot with 2:00 left to bring the Wildcats within 71-69, but Crabbe came back with a hanging five-foot jump shot along the baseline over 6-foot-10 Grant Jerrett. Arizona missed three shots at the rim on its next possession and Cal wasn't threatened after Justin Cobbs drove for a layup to give the Bears a six-point edge.
Crabbe, a 6-6 junior guard who came into the game averaging 19.3 points per game, finished two points off his career high of 33, set on Nov. 13 against Pepperdine. Crabbe also had seven rebounds and five assists. Cobbs added 21 points for Cal.
Lyons led Arizona with 16 points, and Solomon Hill added 13.
Arizona (20-3 overall) fell into a tie for first place in the Pac-12 with Oregon and UCLA at 8-3. Cal improved to 14-9 and 6-5.
Cal trailed 38-33 at halftime but started the second half on a 17-2 run, including a 15-0 stretch, led by Crabbe. He scored 11 points in the first 4:25 of the half, capped by a four-point play when he was fouled on a 3-point basket by Nick Johnson. The Bears started the half by making their first five shots from the field, plus all four free throw attempts, en route to a 50-40 lead.
Arizona had erased much of that deficit by the 12-minute mark of the half, pulling with 52-49 on a steal and fast-break layup by Johnson. But the Bears were excellent in transition, often beating Arizona down court on the fast break, and never surrounded the lead.
The game capped a wild week in college basketball in which No. 1 Indiana, No. 2 Florida, No. 3 Michigan and No. 5 Kansas and Arizona all lost to unranked teams.
Arizona had been plagued by slow starts in three of the past five games, and coach Sean Miller said he was contemplating changing the starting lineup. He ended up sticking with his usual five, and the teams played evenly for about the first 10 minutes before the Wildcats got some separation.
Hill made the first of two free throws with 9:48 left for a 16-15 Arizona lead. Arizona's Brandon Ashley grabbed the offensive rebound on the subsequent miss and was fouled, making both free throws. Hill hit a 3-pointer on the next possession to complete a 6-0 run.
The Wildcats led by as many as nine points when Kevin Parrom hit a 3-pointer with 5:47 to go in the half for a 28-19 lead. Cal hung in and closed to within 30-27 before Hill and Lyons hit back-to-back 3-pointers for Arizona. Cal scored the final four points of the half, including a Crabbe's fast-break layup with one second left, to go into the break trailing 38-33.
Arizona hit 10 of 13 free throws in the first half. Cal attempted only two, making both.
Notes: Cal entered Sunday's game with a 1-15 record in its past 16 trips to McKale Center, dating to the 1994-95 season. ... Arizona freshman post player Jerrett, who missed Wednesday's home game against Stanford because of a low-grade stress reaction in his left foot, entered the game with 17:06 to go in the first half. His unavailability against Stanford was the first player-game Arizona has lost to injury this season. ... The Bears entered the game with a 1-9 record against Top 100 RPI teams.