Wladimir Klitschko has extended his 10 year winning run by beating Australia's Alex Leapai with a fifth round knockout to retain his world heavyweight titles.

The 38 year old Ukrainian scored a knock down after just over a minute in the 5th round and was always in control.

Australia's Leapai is known as a big puncher, but never got the chance to trouble the champion and the one way traffic ended in the fifth round.

Story by: Watisoni Butabua
Source: BBC Sport