Cooper Flagg's Summer League: Fantasy Basketball Insights

Cooper Flagg's Summer League participation ended after two games. His performance improved significantly in the second game against the Spurs compared to his debut against the Lakers. Against the Lakers, he relied heavily on contested mid-range jumpers, but against the Spurs, he attacked the basket more aggressively, leading to better efficiency. In both games, he appeared most comfortable and effective in transition, utilizing his size and athleticism effectively on the fast break.

Although Ryan Nembhard handled primary point guard duties, Flagg was tasked with creating offense in the halfcourt. This often resulted in shots for himself or simple passes rather than assists, though it's expected his assist numbers will increase during the regular season compared to Summer League. His low turnover rate (1.5 per game) given his usage was impressive, though handling the ball against stronger NBA defenders may present challenges.

Flagg struggled with his three-point shot during Summer League, despite doubling his attempt volume from his college rate of 39%. While he will need to space the floor for the Mavericks, he likely won't be asked to take as many threes as he did in Summer League. The shots he does take are expected to be more open, catch-and-shoot opportunities rather than pull-ups, though concerns about his shooting mechanics remain.

Defensively, Flagg showcased strong instincts and athleticism. He was consistently in good help position, active in disrupting drivers without fouling, and contested shots effectively. However, playing alongside Anthony Davis and other bigs like Dereck Lively or Daniel Gafford in the NBA may limit his opportunities to accumulate high steal or block totals. Rebounding numbers were also modest, and his role might emphasize leaking out in transition over crashing the offensive glass.

Regarding fantasy basketball potential for his rookie 2025-26 season, Flagg's two Summer League games reinforced existing views. Supporters saw his athleticism and instincts, while critics noted his halfcourt growing pains. He has the upside to potentially be a co-second offensive option alongside D'Angelo Russell behind Anthony Davis in Dallas. However, achieving significant rebounds or blocks will be difficult within the Mavericks' lineup, and establishing himself as a reliable perimeter shooting threat (both on and off the ball) is crucial for maximizing his fantasy impact.