Cooper Flagg made his first appearance for the Mavericks in Las Vegas during his professional debut at the NBA Summer League.

Cooper Flagg debuted his New Balance sneakers during his first Dallas Mavericks media day. When will Flagg debut his own signature shoe?

Cooper Flagg strolled into UNLV’s Thomas and Mack Center at 4:17 p.m., wearing Dallas Mavericks gear, bright white New Balance shoes, and an emotionless look on his face as he passed