Tournament MVP Azura Stevens had 19 points and five rebounds for the Blue Devils (5-1), who had 11 players on the roster put up points. Haley Gorecki added 11 points.
The Bobcats (2-3) got nine points from Toshua Leavitt.
Duke shot better than 58 percent from the field and forced 21 turnovers. The Blue Devils also had a 45-26 edge in rebounding.
Also on the all-tournament team were: Rebecca Greenwell of Duke, Walla, Christina Salvatore and Geraldine McCorkell of Idaho, and Seanna Johnson of Iowa State.