On the first attempt, Bronny ended up fouling Flagg, so the Mavericks had the ball to inbound on the sideline. The ESPN cameras zoomed in on the Lakers' second-year guard and the Dallas No. 1 overall pick having a quick conversation.

LeBron James' son, Bronny James, and Dallas Mavericks rookie Cooper Flagg have been grabbing headlines after their face-off in an NBA Summer League matchup on July 11.

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.

Thursday's matchup between the Los Angeles Lakers and Dallas Mavericks is one of the most anticipated Summer League games of all time.

Bronny James matched up with Cooper Flagg in their summer league game, and later revealed how he feels about the No. 1 NBA Draft pick.