Kiwi heavyweight Hemi Ahio maintains his perfect record with KO win in the US

Kiwi heavyweight Hemi Ahio has maintained his unbeaten professional record with a second-round knockout win in the US today.

The 29-year-old outclassed Joshua Tufte, with the American knocked down twice, once in each round of the fight.

Ahio then finished the fight with a right hand that caught Tufte around the ear and forced the referee to step in.

The win means Ahio has a 16-0 record with 11 knockouts.