Into his junior NBA season, Dereck Lively II is already playing the role of teacher for the Mavs' highly touted rookie.

This article was originally published on www.si.com/nba/mavericks as First Cooper Flagg Mavericks jersey sells for nearly $100,000. If you didn't believe there was significant hype for Cooper Flagg entering the NBA, his first game used jersey for the Dallas Mavericks, a Summer League jersey, just sold for nearly $100,000.

Dallas Mavericks wing/forward and 2025 NBA Draft No. 1 overall pick Cooper Flagg gave fans a glimpse of his game-changing potential at the NBA Summer League in Las Vegas. Flagg exploded for 31 points in his final appearance during Summer League play—catching the eye of NBA Hall of Fame center Shaquille O’Neal.