BBC Sport looks at where Oleksandr Usyk ranks among the all-time heavyweight greats and who in the current generation could beat him.

Oleksandr Usyk noqueó a Daniel Dubois en el quinto asalto de su combate del sábado y se convirtió en el campeón mundial indiscutido de los pesados por

Oleksandr Usyk has now laid waste to a generation of top tier British undisputed heavyweight hopes in Tyson Fury, Anthony Joshua and Daniel Dubois.

Promoter Frank Warren says Oleksandr Usyk is a "once-in-a-generation" fighter after he beats Daniel Dubois to become a two-time undisputed heavyweight champion.

The Ukranian's demolition of Daniel Dubois was further evidence of why he should be considered the best heavyweight fighter since Lennox Lewis