Stanford has been picked by the Pac-12 coaches to win the conference title again this season behind reigning Player of the Year Chiney Ogwumike.
Caught in a late-season slump, Washington hopes the home-court advantage at Seattle's KeyArena will help it turn things around in the Pac-12 tournament.
Layshia Clarendon scored 26 points as No. 6 California beat Washington State, 73-60, on Thursday night to stay in first place in the Pac-12.
Stanford and Cal struggled but earned their places in the Pac-12 final.
The Pac-10 is considering a compromise that would have California and Stanford placed with the Northwest region schools to secure a north-south division split.
Ashley Walker scored 18 points and grabbed 11 rebounds as No. 3 California beat Washington State 77-57 on Sunday, to extend their school record with a 12th consecutive win.
Ashley Walker had 25 points and 10 rebounds to lead California (No. 9 ESPN/USA Today, No. 13 AP) to a 68-45 win over Washington State on Thursday night.
Devanei Hampton scored 16 points and Ashley Walker added 15, helping No. 9 California tie the school record for victories in a season with a 61-47 win over Washington State.
Alexis Gray-Lawson scored 19 points to lead No. 11 California to an easy 99-44 win over Washington State on Sunday.
Devanei Hampton scored 26 and Ashley Walker had 25 as No. 20 California got back on track by beating Washington State 72-45 at Haas Pavilion on Saturday.
Ashley Walker scored 16 of her 20 points in the second half to help No. 22 California rally for a 55-48 victory over Washington State on Thursday night.
California 61, Washington State 51
Washington State 79, California 69
California 64, Washington State 56