What happened: Cooper Flagg threw down a two-handed slam for his first basket of the preseason. The highlight occurred during the Dallas Mavericks' exhibition matchup against the Houston Rockets in Macao.

Why it matters: The sequence offered an early look at the forward in game action as he prepares for his rookie campaign. He continues to draw attention following an active offseason, which included signing an autographed NBA debut card.

What to watch: Dallas continues its preseason preparation ahead of the regular season.