British heavyweight boxer Ali Adams banned for two years after failed drugs test The Chelsea-based fighter, who was beaten in four rounds by Harrison, failed a drug test for stanazolol immediately after the bout - the same steroid for which former Canadian sprinter Ben Johnson tested positive at the Seoul Olympics in 1988. Adams, who had been provisionally suspended since July pending disciplinary proceedings, had previously protested his innocence by claiming that the substance was contained in a medication he was using to treat a neck injury. But UK Anti-Doping (UKAD) announced on Thursday that his drug violation had been confirmed and banned him from competition until June 2014. The anti-doping agency said Adams had been targeted for drug-testing based on prior intelligence. In a statement, UKAD said: "Stanozolol is banned at all times in sport. There is no reason for it to be found in an athlete's system and the repercussions for using such substances are serious, as can be seen from this finding.