Boxing referee weighs in on McGregor's controversial knockdown of Paulie Malignaggi

Referees are rarely praised for making the right call and, when a slip-up happens, you can be sure to see their names in the headlines for all the wrong reasons. Conor McGregor 's controversial sparring footage with Paulie Malignaggi has stirred up debate as to whether the Irishman actually knocked down the former two-weight boxing world champion.