Once Usyk established a rhythm, he began to hurt Dubois with heavy counters.

Oleksandr Usyk is not only the best heavyweight in the world today, he's surely in the running for the best of a generation and is climbing all-time lists, too.

Usyk has not just cleaned out his biggest rivals - Tyson Fury, Anthony Joshua and Dubois - but he has gone all the way round the block and defeated each of them twice.