The Rio Olympics is unusual, in that some medalists are greeted with "Boos" and jeers - not as a result of misplaced national loyalty, but in protest against "dirty" athletes. Many anti-doping advocates and athletesare of the view that the silver medal won by South Africa's Chad Le Clos in the men's 200m freestyle final is the real gold. China's Sun Yang took first placebut as Swim Vortex reported, following the revelation of a positive test that was hidden by China, the crowd was muted, hardly anyone clapped and his win was greeted with booing and hissing.

Dopers no longer viewed as legitimate athletes

In the minds of anti-doping advocates, those who have tainted their sport through using drugs are no longer accepted as top athletesand should not be allowed to compete at all. Support for clean athletes such as Le Clos is at an all time high at the Rio Olympics. The tragedy of this is that while le Clos took home a respectable silver, 4th placedWorld Champion James Guy - another clean athlete can only accept the knowledge that theclean sports fans wish he had been able to step up to claim the bronze.

Yang's impressive record

Sun Yang isacknowledgedin Asian circles as being one the most successful swimmers in history, and he has an impressive record.

He won his first international medal at the World Championships in Rome in 2009 and set the second fastest time in history the following year in the 1500m long distance freestyle race. He took two gold medals home from the London 2012 Olympics and in 2013 at the Wold Championships in Barcelona he swept the medal table with three wins in the long distance events.

Drug test failure

Yang's glory was greatly tarnished in 2014 when he tested positivefor the stimulant, trimetazidine which had recently been added to the WADA list ofbanned drugs. Using a similar defense to Maria Sharapova, that he did not know it was on the banned list, and it was prescribed by a doctor - he too was found not guilty of intent to cheat.

Unlike Sharapova who ended up with a two-year tennis ban - he merely got a slap on the wrist, and the Chinese Anti-doping Agency banned him from competition for three months. His suspension was not made public at the time and after his suspension ended he was applauded once again for his medal winning performance at the 2014Asian games.

Perhaps in support of his original claim that the drug found in his system was prescribed for a heart condition, in 2015 Yang failed to appear to swim in the 1500m freestyle race in the World Championship in Kazan, citing his heart condition as the reason for his absence. This was despite the fact that the doctor who prescribed his medication also received a suspension by Chinese authorities.

Two years is a short time in athletic careers

2014 might seem like a long time ago, but for athletes who have a limited number of years to stay at the top of their game, two years is a lifetime, and disgust at dirty athletes is on the rise amongst fellow competitors and sports fans. Public opinion has also swung againstFINA, as the executive director of FINA, Cornel Marculescu hugged Yang in congratulation of his win in Rio.

Sarcasm and irony are zooming around Twitter as the platform grants clean sports supporters a place to let their displeasure show.

The Osaka Rule

The IOC's Osaka rule that athletes who had a six-month suspension could not compete in the next Olympic games was thrown out by The International Court of Arbitration for Sport in 2011. Whilst the IOC wish to revisit the ruling, the three-month ban imposed on Yang would not have prevented him from competing in Rio. Nevertheless, pressure from athletes and advocates for Clean Sport will hopefully see some new rules introduced before the Tokyo Olympics in 2020.

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