Cooper Flagg won't officially be a member of the Dallas Mavericks until the NBA draft on June 25, but he is reportedly already making quite the first impression on his future team.

Cooper Flagg NBA draft profile: strengths, stats, and scouting insights on the top prospect's game-changing potential.

From Maine to Montverde Academy to Duke, Flagg has been building step by step to do exactly this: be the first pick in next week's draft.