Cooper Flagg recorded only two points in the first half against Georgia Tech before exiting the game with an ankle injury. (Photo by Jared C. Tilton/Getty Images)

Cooper Flagg left Thursday’s Duke-Georgia Tech ACC tournament quarterfinal near the end of the first half with an ankle injury and is doubtful to return.

With the Blue Devils trailing, Flagg grabbed a rebound and landed awkwardly, injuring his ankle. After spending time on the bench getting treatment, he went back to the Duke locker room needing assistance.

Flagg was taken for further examination and for x-rays in a wheelchair by medical staff. Duke announced at the start of the second half that he was “doubtful” to return. Maliq Brown, who injured his shoulder during the first half, was ruled out.

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According to Sports Illustrated’s Bryan Fischer, Flagg left the locker room still in a wheelchair with a “heavily swollen” ankle.

No. 1 Duke trailed Georgia Tech 31-26 at the half. The Blue Devils had a tough start shooting-wise, missing their first 13 3-point attempts and going 36.7% from the field.

Flagg netted only two points on 1-of-7 shooting before he exited the game.

The 18-year-old Flagg is projected to be the No. 1 pick in June’s NBA Draft. In his freshman season with Duke was named ACC Player of the Year, ACC Rookie of the Year and voted First-team All-ACC and to the ACC All-Defensive and All-Freshman teams.