Oleksandr Usyk knocks out Daniel Dubois in round nine of heavyweight world title fight in Poland

Ukrainian champion Oleksandr Usyk has knocked out Britain's Daniel Dubois in the ninth round to retain his WBA, WBO and IBF heavyweight world titles.

Usyk, fighting in front of a partisan 40,000-strong crowd in Poland, knocked Dubois down at the end of round eight.

In the next round, a tiring Dubois was sent to the canvas again and failed to beat the count.

Usyk took almost four minutes to recover in round five after being hit with a punch that the referee deemed to be low.

He insisted he should be the heavyweight world champion after being "cheated out".

[Source: BBC Sports]