On that play, Flagg drove to the basket on big man Hunter Dickinson. Adams arrived to help and swatted Flagg’s shot. He tried to recover the ball but knocked it out of bounds. On the next Duke possession, Adams stopped a three-on-one fast break by swatting Kon Knueppel’s shot at the rim.

Tyrese Proctor led Duke (4-2) with 15 points, Flagg scored 13, Kon Knueppel had 11 and Sion James finished with 10. Mayo put Kansas ahead for good when he made a jumper with 1:57 left for a 73-71 lead. Flagg hit a free throw for Duke and Rylan Griffen answered with two foul shots with 2 seconds left.