Anthony Joshua will defend his WBA, IBF and WBO world heavyweight titles against Oleksandr Usyk in front of what is hoped will be a crowd of over 60,000 fans at Tottenham Hotspur Stadium, London, on Sept. 25. Joshua (24-1, 22 KOs), 31, and Usyk (18-0, 13 KOs), 34, won gold medals at the 2012 Olympics at super-heavyweight and heavyweight respectively and the fight will mark the first time two gold medallists in respective categories will face off in the professional ranks.