Tyson Fury's sparring partner Jai Opetaia has left his training camp after only five rounds. The former cruiserweight world champion will fight Mairis Briedis on the undercard of the undisputed heavyweight world title fight between Fury and Oleksandr Usyk next month. Run rabbit, run rabbit, run, run, run," he boasted. When you sleep at night ugly man you're going to think of me for the next eight weeks. He's a champion, I'm a champion.