At Duke, he averaged 19.2 points, 7.5 rebounds, and 4.2 assists per game, earning a litany of awards, including ACC Player of the Year and Freshman of the Year honors while leading the Blue Devils to the Final Four. Nationally, he won the Wooden and Naismith Awards for Player of the Year, and he was also a consensus All-American.

Draymond Green criticized the Dallas Mavericks for shutting down Duke Blue Devils basketball great Cooper Flagg after two Summer League games.