Cooper Flagg’s personal trainer dishes on offseason developments

LAS VEGAS, NV - JULY 11: Kyrie Irving #11 and Cooper Flagg #32 of the Dallas Mavericks pose for a picture during the game against the Los Angeles Lakers during the 2026 NBA Summer League game on July 11, 2026 at the Thomas & Mack Center in Las Vegas, Nevada. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. Mandatory Copyright Notice: Copyright 2026 NBAE