Arsalan Kazemi and Johnathan Loyd each scored 15 points for the Ducks (22-6, 11-4 Pac-12), who used a 16-6 second-half run to put away the victory following Thursday's last-second loss to California.
E.J. Singler supplied 12 as Oregon recorded its fourth win in five games overall.
The Cardinal (16-12, 7-8) were paced by Dwight Powell with 16 points.
Celebrity Families of 2014 [PHOTOS]