Greek sprinter Tassos Gousis has failed a doping test days before he was due to compete at the Beijing Olympics.
State television says the 29-year-old, who was due to compete in the 200 metres, tested positive during doping controls conducted by the Greek anti-doping agency ESKAN before the team left for training in Japan.
Several Greek athletes, including 11 weightlifters, a boxer and a swimmer, have tested positve for banned substances in the past months following tougher controls imposed by the Hellenic Olympic Committee and the federations ahead of the Games.
