Payton Pritchard led five Ducks players in double figures with 20 points as No. 13 Oregon's early scoring outburst pulled away from California and cruise to a 90-56 win.
UCLA to play rival Southern California with the Pac-12 regular-season title on the line. The Bruins can earn a share of their first conference title since 2012-13.
It was an emotional Senior's day for the Huskies as Amber Melgoza scored 20 points, Rita Pleskevich added 15 and Washington upset No. 8 UCLA 74-68 on Sunday.
Michaela Onyenwere scored 23 points and Chrisma Osborne added 16 as No. 10 UCLA recovered from a slow start to earn a 66-50 victory over Washington State.
Chris Duarte scored 20 of his 24 points in the first half and No. 12 Oregon took full advantage of 23 UCLA turnovers for a 96-75 win over the Bruins on Sunday.
South Carolina still sits atop The AP women's college basketball poll with Baylor in second place. UConn moved up to third. Northwestern entered the poll at No. 22.
The UConn Huskies is sitting at the top of the women's AP Top 25 poll, received 19 first-place votes from a 30-member media panel to stay ahead of second-ranked Oregon.