Quinn Cook scored 11 of his 15 points in the final 7:46, including No. 5 Duke's last eight of the game, and the Blue Devils beat No. 2 Louisville 76-71 on Saturday night in the championship game of the Battle 4 Atlantis.
Neither team led by more than four points over the final 10 minutes until Cook's second free throw with 6.7 seconds left made it 76-71.
The sophomore point guard had six assists and just four turnovers against Louisville's pressure defense. He was 4 for 8 from the field and 6 of 6 from the line.
Mason Plumlee had 16 points for Duke (6-0).
Peyton Siva had 19 points for the Cardinals (5-1) and Russ Smith added 17.