Maite Cazorla added 17 points and Lexi Bando finished with 14 points to help Oregon (22-13) become the first No. 10 seed in a decade to reach the round of 16.
The Ducks, in their first tournament since 2005, had never advanced past the second round in their 12 previous appearances. Now they're on to Bridgeport, Connecticut, to take on third-seeded Maryland (32-2) in a regional semifinal.
Lexie Brown scored 25 points for the second-seeded Blue Devils (28-6), who have been upset at home in the tournament's second round twice since 2014. They played without guard Kyra Lambert, who tore her left anterior cruciate ligament in the first round against Hampton.
Oregon was in control all night — never trailing after the first 3 minutes, methodically stretching its lead to 15 on back-to-back 3s by Bando and Cazorla early in the fourth quarter and holding off Duke's last-gasp push to get back in the game.
Brown pulled Duke to 68-63 with three free throws with 26.7 seconds left before Sabrina Ionescu iced it by hitting six free throws in the final 24.5 seconds.Read more at CNSNews