Posted on July 25, 2019July 25, 2019Dillian Whyte has tested positive for a banned substance. View this post on Instagram Dillian Whyte has tested positive for a banned substance prior to his fight against Oscar Rivas July 20. The substances are epimethandienone and hydroxymethandienone A post shared by The Bible Of Boxing (@ringtv) on Jul 25, 2019 at 11:42am PDT This week in boxing is getting even crazier. Whyte tested dirty for his fight with Oscar Rivas.