Alexyz Vaioletama had 10 points, and Brianna Barrett had 10 points and nine assists for the Trojans (5-8, 2-0 Pac-12). Christina Marinacci had 11 rebounds and seven points.
USC led 32-30 at halftime and never trailed in the second half, but the Ducks tied the game three times in the final 5 minutes.
Oregon shot 39 percent from the field for the game—compared with just 33 percent for USC—and outrebounded the Trojans 49-40. Oregon committed 17 turnovers, which USC converted to 19 points.
Amanda Delgado and Ariel Thomas scored 15 points apiece for Oregon (2-12, 0-2). Thomas also had seven assists. Jillian Alleyne had nine points and 10 rebounds.