DURHAM, N.C.—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 percent and made 10 of 20 from 3-point range to win their 15th straight game.
