Two weeks ago, former Duke Blue Devils star Cooper Flagg was selected No. 1 overall by the Dallas Mavericks—something that felt like a near certainty for most of his record-breaking freshman season in Durham. Now, on Thursday, he's set to make his highly anticipated Summer League debut as the Mavericks take on the Los Angeles Lakers in Las Vegas. The matchup is expected to be played in front of a sold-out crowd, with ticket prices among the highest ever for a Summer League game.