Joseph Parker insists he has the nerve to knock out friend and training partner Tyson Fury

The WBC champion is set to fight fellow Brit Dillian Whyte at Wembley Stadium on Sunday - but the Kiwi heavyweight will step into the ring should the challenger bow out.

Parker - who's been training with Fury to help him prepare - says he's ready to switch on his killer instinct.



You can hear the full interview tonight on Sportstalk with D'Arcy Waldegrave.