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.

The presumptive No. 1 overall pick in next Thursday’s NBA draft graced the cover of the latest issue of Sports Illustrated, which details the former Duke star’s versatile two-way skillset that combines athleticism, elite basketball IQ and an extraordinary poise for an 18-year-old.