Cooper Flagg had 21 points, eight rebounds and seven assists in his Duke-North Carolina rivalry debut, helping the second-ranked Blue Devils roll past the Tar Heels 87-70 on Saturday night.
Fellow freshman Kon Knueppel scored 22 points for Duke (19-2, 11-0 Atlantic Coast Conference), which shot 52.8% and made 10 of 20 from 3-point range to win their 15th straight game.
RJ Davis and Drake Powell each scored 12 points to lead the Tar Heels (13-10, 6-5), who fell behind 40-13 and trailed by as many as 32 points.