Colby Covington accuses Kamaru Usman of PED usage: "He's been doing EPO his whole career"

It would be an understatement to suggest Colby Covington is outspoken. The no. 1 contender in the welterweight division, who will face division champion Kamaru Usman in a rematch for the UFC's 170 pound title at UFC 268, even has nicknames for those he is not too fond of. Whether...