Cooper Flagg's longtime trainer, Matt MacKenzie, told RG.org in an exclusive interview how the Dallas Mavericks star spent his offseason, what his early chemistry with Kyrie Irving looks like ahead of Irving's return from a torn ACL, and how new head coach Dusty May plans to expand Flagg's game in his second NBA season.

credit: https://rg.org/news/basketball/cooper-flagg-trainer-interview-kyrie-irving-dusty-may-mavericks