"Grayson Allen did not make a dirty play," Gates told ESPN on Wednesday morning. "That was not a dirty play. He plays hard, he dove after a loose ball. I should have been sitting down, but I wasn't.

Duke junior guard Grayson Allen scored 15 points in a 110-57 rout of Georgia Tech in his return to the lineup after a one-game suspension for tripping an opponent in a December game.

Duke star Grayson Allen tripped Florida State's Xavier Rathan-Mayes during the Blue Devils' 80-65 win on Thursday night for the second time Allen has tripped an opponent in a month.