Football free of doping: Ronaldo

Former Real Sociedad president Inaki Badiola claimed earlier this week that the Basque side bought banned substances during a six-year period between 2001 and 2007.

"It's a very delicate situation, but I don't think there is doping in football. It's a collective sport and I don't think it's necessary to resort to doping to improve your performances. But I can't swear that no-one has done it. Is football a clean sport? Yes, 100 per cent," Ronaldo was quoted as saying by AS.