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

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

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.

LONDON -- Oleksandr Usyk knocked out Daniel Dubois in the fifth round and became the undisputed world heavyweight champion for a second time on Saturday. The undefeated southpaw retained his WBA, WBC and WBO belts and regained the IBF belt he relinquished just over a year ago.

Oleksandr Usyk ppd. Lapsed fan's guide to the heavyweight division: So really, when are we getting Tyson Fury-Oleksandr Usyk? Oleksandr Usyk knocks Daniel Dubois down a second time to finally finish the fight and retain his belts.

The boxing world is set for another epic showdown when Oleksandr Usyk and Daniel Dubois meet in the much-anticipated rematch on Saturday, July 19.

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