DURHAM, N.C. (AP) — Cooper Flagg had 21 points, eight rebounds and seven assists in his Duke-North Carolina rivalry debut to help the second-ranked Blue Devils beat the Tar Heels 87-70. Fellow freshman Kon Knueppel added 22 points for Duke. The Blue Devils shot 53% and made 10 of 20 from 3-point range to win their 15th straight game. The Blue Devils are also 11-0 in the Atlantic Coast Conference. RJ Davis and Drake Powell each scored 12 to lead the Tar Heels. UNC fell behind 40-13 and trailed by as many as 32 points. The Tar Heels have lost four of five.… Continue Reading