The Wildcats shot to a 22-point lead in the first half and rolled to a 99-84 victory over the bumbling Bruins on February 19.
Jason Gardner had 16 points, 11 assists and seven steals for the Wildcats. His steals, two short of the school record, came in the first half, when the Bruins committed 17 of their 23 turnovers.
Gilbert Arenas scored 23 and Michael Wright 22 for Arizona.
Freshman Jason Kapono matched his high game with 27 points for UCLA, including 5-of-9 3-pointers, and Dan Gadzuric added 17.
The Wildcats used a harassing, quick defense to ignite a 17-5 run to build a 34-19 lead with 4:50 left in the first half.
UCLA had a 9-0 run, cutting Arizona's lead to 68-53 on Kapono's three-point play with 10:44 remaining, but Gardner's stopped the rally with a 3-pointer. The Bruins cut the lead to 12 in the final seconds against Arizona's seldom-used, non-scholarship reserves.