We don't believe that the problem is widespread. If people don't trust our product, they'll turn us off. And we know that. Australian sports authorities have vowed an extensive inquiry into the recent allegations made by a former Olympic athlete that some of the country's top athletes were taking drugs. The Chinese government has made efforts to counter the widely-held image of rampant doping by Chinese athletes.
Officials say they're more aggressively testing on athletes.
But more often than not, national Olympic organizations seem either unwilling or unable to crack down too aggressively, critics say. United States Olympic Committee drug enforcement chief Wade Exum quit his post in June, accusing the USOC of turning a blind eye to banned drug use. In a move many think could be a significant reform, testing of U.S. Olympic athletes is set to be transferred from the USOC to a newly created, independent U.S. Anti-Doping Agency. U.S. Olympic Committee officials said they didn't have enough time to make the change before the games. Ruling Delayed For the rest of the day's sports news, click here .