Usain Bolt delivers message to Australian sprint talent Gout Gout - video

Speaking in Tokyo ahead of the upcoming World Athletics Championships, Olympic champion Usain Bolt said there will be 'a lot of factors' that will determine whether Australia's 200m national record holder Gout Gout is 'going to be great'. 'I used to do great things when I was young,' Bolt said. 'But the transition to senior from junior is always tougher.'Bolt warns very talented Gout about step up to seniors ahead of worldsGout frenzy drives huge Australian in...