Flagg scored 31 points in his second start and looked more comfortable as the Mavericks' primary ball-handler. Dallas shut him down for the rest of the summer slate after his scoring outburst was the most by a No. 1 pick in summer league play since John Wall in 2010.

Flagg, the No. 1 overall pick in the 2025 NBA Draft, impressed early, erupting for 31 points in his second showing after a poor performance during his first game in the Summer League. Following his superb performance, the Mavericks opted to rest him for the rest of the Summer League.

At Duke, Flagg averaged 19.2 points, 7.5 rebounds, 4.2 assists and earned ACC Player of the Year honors while leading the Blue Devils to the Final Four. He also won the Wooden and Naismith Player of the Year awards and was an All-American.