Sun Yang: Wada appeals after Chinese swimmer cleared of missing doping test
Olympic gold medallist Sun Yang faces a hearing at the Court of Arbitration for Sport after the World Anti-doping Agency appealed against a decision to clear him of a doping offence.
World swimming governing body Fina gave Sun a warning when he missed an out of competition test at his home in China.
Sun, 27, has won three Olympic golds, one at Rio 2016 and two at London 2012 .
He was previously banned for three months in 2014 for taking prohibited stimulant trimetazidine.
Freestyle specialist Sun missed a doping test in September 2018. In January, Fina's doping panel cleared Sun of wrongdoing on the grounds that testers had breached several rules, including failing to produce authorisation letters and a nursing licence, according to Sun's lawyers. He was issued with a warning.
Sun was called a "drug cheat" by Australian swimmer Mack Horton at the Rio Olympics.