Justin Cobbs made a pair of free throws with 20.8 seconds left in overtime, and California kept alive its slim NCAA tournament hopes with a 66-65 win over Colorado on Saturday.
Fifth-ranked Stanford could come back to Pauley Pavilion next month for the NCAA tournament, and that would be fine with Chiney Ogwumike.
Reshanda Gray scored 22 points and grabbed 11 rebounds to lead No. 18 California past USC 76-67 on Sunday.
Afure Jemerigbe scored a career-high 23, and Brittany Boyd had 21 points, eight rebounds and six assists on Sunday night to lead No. 22 California past No. 15 Arizona State 74-63.
No. 6 Stanford beat Arizona 74-48 on Sunday to move closer to a 14th straight conference regular-season crown.
Tyrone Wallace scored 20 points, and California rallied from a 12-point first-half deficit for a 72-59 win over Washington on Saturday to remain on the edge of the Pac-12 Conference regular season title race.
Kelsey Plum scored 23 points, Mercedes Wetmore added 18 and Washington held off a late charge by No. 3 Stanford for an 87-82 upset victory Sunday.
Reshanda Gray scored 24 points and Brittany Boyd added 23 as No. 23 California pulled away for an 87-70 win over Washington State on Sunday.
Chiney Ogwumike had 29 points, eight rebounds and four assists and No. 4 Stanford ran its winning streak to 20 games by beating 21st-ranked Cal 79-64 on Sunday.
Dwight Powell matched his season high with 28 points, helping Stanford beat Arizona State 76-70 on Saturday.