The champion explains how he learned from his previous win against the Briton and introduces ‘Ivan’, the left hook that closed the show The champion explains how he learned from his previous win against the Briton and introduces ‘Ivan’, the left hook that closed the show Joseph Parker:  This is the most logical next bout for Usyk as Parker, apart from being the WBO’s mandatory challenger, is in a rich vein of form.  He deserves another world title shot and, while he would be a heavy underdog,