Daniel Dubois, Oleksandr Usyk and Ukrainian champ
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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
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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 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.