The Dallas Mavericks had their first Summer League game on Thursday night, meaning Cooper Flagg had his first official NBA moment in a Mavs uniform. He didn't have the greatest game scoring the ball, having 10 points on a shockingly poor 5/21 shooting, but he impacted the game in other ways with his playmaking, defense, and transition game.

Kyrie Irving has strong words for his Cooper Flagg after making his Summer League debut for the Dallas Mavericks.

After the game, Flagg called his performance “one of the worst games of my life.” Ryan Nembhard and Miles Kelly picked up Flagg’s poor shooting by combining for 38 points as the Mavericks snuck past the Lakers 87-85.