During a recent NBA Summer League game, the former Duke standouts greeted each other courtside before tipoff, sharing a quick handshake and smile. The wholesome exchange didn’t go unnoticed, especially by Flagg’s mom, Kelly, who responded to the clip on social media with a heartfelt message: “Brothers forever.”

Cooper Flagg's first and likely only NBA Summer League is over.The Dallas Mavericks have shut down the No. 1 pick in this year's draft after two summer league games, according to a person who spoke Sunday to The Associated Press on condition of anonymity because the team had not revealed the move publicly.

LAS VEGAS — He missed 16 of 21 shots, including all five attempts from deep, and airballed his first and final shots. And those who saw his NBA 2K26 Summer League debut still came away with a consensus gut feeling: Cooper Flagg is right on pace to be a problem.

The Dallas Mavericks have reportedly ended Cooper Flagg's Summer League participation after just two games. He had a rough shooting night in his debut against the Lakers, scoring 16 points but making only 5 of 21 shots.

Dallas Mavericks forward Cooper Flagg ’s NBA Summer League run is expected to be over in Las Vegas. The Mavericks will shut down the rookie for the rest of the exhibition tournament after just two games, according to ESPN 's Tim MacMahon.

No. 1 pick Cooper Flagg leads the Dallas Mavericks against the Charlotte Hornets in today’s NBA Summer League slate.