Last updated on .From the section Olympics

Chen Xinyi missed out on a bronze medal in the 100m butterfly final in Rio by nine-hundredths of a second

Two competitors who failed doping tests at the Rio Olympics have been kicked out of the Games, the Court of Arbitration for Sport has confirmed. external-link

Chinese swimmer Chen Xinyi, 18, tested positive on the day she finished fourth in the women's 100m butterfly.

Brazilian cyclist Kleber Ramos, 30, failed a pre-Olympics test before the men's road race on 31 July.

Governing bodies Fina - for swimming - and the UCI for cycling are responsible for delivering further sanctions.

Chen was disqualified from the Games for use of the diuretic hydrochlorothiazide, while Ramos tested positive for banned blood-booster EPO.

Diuretics are outlawed because they can be used as masking agents for other doping products.