Dominic Artis scored 10 for Oregon (11-2), which has won all 10 games at Matthew Knight Arena this season.
Emory, who started the second half in place of injured forward Arsalan Kazemi, scored nine of his 13 points after halftime. His 3-pointer with 9:26 to play snapped an 8-0 run by the Wolf Pack which had cut the Ducks' double-digit lead to 39-33. Emory's shot sparked a 14-4 run which put Oregon up 53-37 with 6:05 to play.
Despite missing his first nine shots from the field, Deonte Burton scored 12 to lead Nevada (9-6), which had won five straight.
Kazemi left the game with 2:01 left in the first half after a collision under the Nevada basket.
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Mike Krzyzewski says he has good reason to be excited for next season thanks to a combination of Duke's incoming freshmen and a core of experienced upperclassmen.
Georgia guard Juwan Parker has been awarded a medical redshirt, leaving him with two years of eligibility, after missing the 2015-16 season with a partially torn Achilles tendon.
Forward Trevon Bluiett has withdrawn from consideration from the NBA draft and will return to Xavier for his junior season.