Britain's Tyson Fury, left, and Ukraine's Oleksandr Usyk. Photo: Francisco Seco/AP
The long-awaited clash of the two undefeated holders of all the heavyweight gold is finally happening - Briton Tyson Fury taking on Ukrainian Oleksandr Usyk. Between them, there is a veritable alphabet of titles, but the best way to describe this is that the winner will become the first undisputed heavyweight world champion since Lennox Lewis in 2000.
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