CHAPEL HILL, N.C. -- Duke guard Grayson Allen was given a technical foul on a first half drive to the basket for elbowing North Carolina freshman Brandon Robinson.
Officials initially only called a blocking foul on Robinson and did not assess the technical on Allen until going to the monitor to review.
Robinson reacted to the contact immediately on the play, grabbing his nose in the process.
Allen then made two free throws before Joel Berry II hit the two foul shots awarded to North Carolina for the technical.
Allen, who has 10 points at halftime, has been booed by the Dean E.