Former double world sprint champion Tyson Gay pulled out of next month's Moscow world championships after failing an out-of-competition dope test.
Players will undergo blood tests next season as part of UEFA's new anti-doping detection regime in all competitions run by European governing body.
Veteran Fluminense midfielder Deco was seeking to clear his name on Tuesday after it emerged he tested positive to a banned substance.
Current anti-doping measures in tennis are a "disaster" and the introduction of biological passports can only improve matters, world number six Tomas Berdych said.
American cyclist Lance Armstrong, who was stripped of his seven Tour de France titles for doping, is ineligible for a masters swimming competition in Texas, the event's sanctioning body said on Thursday.
American cyclist Lance Armstrong, who was stripped of his seven Tour de France titles for doping, is ineligible for a masters swimming competition in Texas, the event's sanctioning body said on Thursday.
Unprecedented levels of skill, intensity and endurance have transformed global sports into spectacular mass entertainment and handsomely rewarded its leading exponents.
Danmark's famed cyclist Rolf Soerensen admitted Monday that he had used blood-boosting EPO and cortisone in the 1990s.
The Australian men's 4x100m freestyle relay squad has admitted using a sedative banned by their national Olympic committee in a bonding session before the London Games.
Lance Armstrong said on Wednesday he will not cooperate with a US Anti-Doping Agency investigation into dope cheats in cycling but would be willing to help other anti-doping inquiries.
China plans to investigate an allegation that 99 percent of the materials that make up illegal substances come from China, but remains doubtful about the World Anti-Doping Agency's statistics, a Chinese official said on Tuesday.
China has planned to investigate an allegation that "99 percent of illegal substances" come from China but remains doubtful of the World Anti-Doping Agency's statistics.