Oleksandr Usyk faces Britain’s Daniel Dubois for their re-match at Wembley Stadium on Saturday night 23 months after their previous meeting which Usyk won but not without controversy.

Suppose Usyk beats Dubois and intends to keep hold of his undisputed titles before he retires. In that case, the politics of boxing dictates he will have to fight his mandatory challenger – the big Kiwi and training partner of Tyson Fury, Joseph Parker.