Oleksandr Usyk is the new WBA, WBO and IBF heavyweight champion of the world after, in a riveting display of skill and nerve, he outpointed Anthony Joshua to win a clear and unanimous decision. His commanding victory was not a shock because the unbeaten Ukrainian is a former undisputed world cruiserweight champion and, before the fight, there was widespread consensus among boxing’s cognoscenti that Usyk is a much more natural and gifted fighter than Joshua.