Duke, a consistent national power that prides itself as being above the fray, has tested Krzyzewski this season, with star Grayson Allen tripping a third opponent in a year. Krzyzewski suspended him indefinitely as he and the school came under fire for allowing Allen’s serial tripping to go on so long.
http://nypost.com/2017/01/02/a-bizarre-duke-season-takes-turn-as-krzyzewski-steps-away/
http://nypost.com/2017/01/02/a-bizarre-duke-season-takes-turn-as-krzyzewski-steps-away/