Rio de Janeiro, Aug 12: Chinese swimmer Chen Xinyi has failed a doping test at the Rio Olympic Games, the Chinese Swimming Association (CSA) announced in its statement on Friday. The Chen, 18, tested positive for hydrochlorothiazide, a diuretic, on the August 7 test. Chen has applied to the Intertiol Olympic Committee for a test of sample B and a hearing to look into the matter, said the CSA. IANS