I don't believe a word he said other then he used. I bet he has used or is using untraceable substances. The only way to put this to rest is to, test all the athletes, test them regularly, keep the samples, retest the samples as new testing abilities come up. Ban any players that get caught doping FOREVER. If they dispute the drug test, then put them on a lie detector. If they find a way to fake a test, ban them permanently as well. This should be coordinated by an organization outside of any sport and should be subject to ALL major sports. If they do that, and subject all athletes that if they fail a test they lose all money from the teams, medals, records, hall of fame induction eligibility, and be listed somewhere within each hall of fame as a cheater then they would all stop, stop immediately, and it wouldn't happen.