Dillian Whyte (16-0, 13ko) has questioned bitter rival Anthony Joshua’s (14-0, 14ko) mental strength ahead of their much-hyped, grudge British and Commonwealth heavyweight title clash on Saturday night, saying that he feels the gold medal winning Olympian is too heavily reliant on his promotional ‘hype-machine’ and myriad elite resources, stating mentally, the man he calls ‘Fake-J’ is feeling the heat inside.