What next for Oleksandr Usyk after controversial win over Daniel Dubois?

There was controversy over a punch deemed a low blow by Dubois in the fifth round that left Usyk on the canvas.

Ukraine’s Oleksandr Usyk, right, lands a blow on Britain’s Daniel Dubois (Czarek Sokolowski/AP)

Oleksandr Usyk maintained his unbeaten record with a knockout victory over Daniel Dubois in Poland on Saturday night.

The Ukrainian put down Dubois in the ninth round to retain his WBA, IBF and WBO heavyweight belts, although there was controversy over a punch deemed a low blow by the British fighter in the fifth round that left Usyk on the canvas.