The Blue Devils' star sustained an apparent left ankle injury in the first half of Thursday's ACC quarterfinal win over Georgia Tech that kept him out for the entirety of the second half. Flagg exited the game with just two points on 1 of 7 shooting from the field with four rebounds, two steals and a block.

Each program has won five ACC Tournament titles in Charlotte, with the Blue Devils beating the Tar Heels in the 2019 semifinals before cutting down the nets at Spectrum Center. Duke rallied from a 14-point deficit to beat Georgia Tech in Thursday’s quarterfinals, but the Blue Devils could be without two of their top players against UNC.