Duke star Cooper Flagg left Thursday’s Atlantic Coast Conference Tournament quarterfinal game with a left ankle injury and had to be helped to the locker room.

Duke basketball star freshman Cooper Flagg went down with an apparent ankle injury on Saturday vs Georgia Tech.

Duke University’s men’s basketball success over the years—the national championships, the Final Four appearances, all the NBA players who’ve honed their craft down in Durham—has created a blue-chip brand.

Duke said at halftime that his return to the game was doubtful but later ruled him out. Footage taken by Ross Martin of CBS Sports, who is on press row in Charlotte, showed Flagg participating in Duke's timeout huddles during the second half but walking gingerly back to the bench.

Duke University basketball star Cooper Flagg has suffered injury to his left ankle Thursday in the Blue Devil's first game of the postseason against Georgia Tech. The injury happened with 2:46 remaining in the first half of the game.