Frenzy became bedlam on the next play. Flagg talked trash to James, ran to his spot on the left wing, pivoted off the catch and nailed the shot before turning to exult with his future Mavericks varsity teammates, who cheered him on decked out in casual wear from their courtside seats.

The much-anticipated Summer League matchup between the Los Angeles Lakers and Dallas Mavericks featuring Bronny James Jr. and this year's first overall pick, Cooper Flagg, more than lived up to the hype on the first day of the tournament in Las Vegas.