Kiana Williams keyed a decisive stretch late in the third quarter to finish with 20 points and nine assists, leading No. 5 Stanford to a 77-56 win against Washington.
Lexie Hull scored eight points and grabbed a big rebound in the final 3 minutes and finished with 20 points as No. 3 Stanford beat Gonzaga 76-70 in overtime.
KZ Okpala scored 22 points, and three others reached double figures in scoring for the Cardinal, who snapped a two-game losing streak. Stanford has won six of eight overall.
Ionescu had 27 points and No. 3 Oregon used stellar defense to extend its NCAA-best winning streak to 16 games by running away from 11th-ranked Stanford 88-48.
Stanford celebrated on the court Sunday in an 85-64 victory by the sixth-ranked Cardinal against WSU that helped Hall of Fame coach Tara VanDerveer reach her 900th win.
In the fourth quarter, Gonzaga's Chandler Smith scored 10 late points to help the Bulldogs held off the #6 Stanford Cardinal's pressure run for a 79-73 victory.
Alanna Smith and Brittany McPhee combined for 45 points as Stanford beat Florida Gulf Coast 90-70 and is going back to the Lexington for a third straight March.
Reid Travis scored 23 of his career-high 33 points in the first half as Stanford jumped to an early lead on the way to a 94-78 victory over the Huskies.
Dorian Pickens had a career-high 28 points, including a key 3-pointer with 76 seconds left, to help Stanford Cardinal beat Washington State Cougars 79-70.