(Reuters) - There is no credible evidence that future Hall of Fame quarterback Peyton Manning used human growth hormone or performance-enhancing drugs as was alleged in an Al-Jazeera documentary, the ...

Serena Williams shuts down return to tennis after reentering anti-doping test pool - The tennis legend retired from the sport ...

Tennis players involved in doping or match-fixing investigations are now eligible for free legal help, confidential counseling or money to test products they've taken that might have led to a positive ...

Olympic sprinter Marvin Bracy-Williams has agreed to a 45-month doping ban in a case investigated by federal drug-enforcement authorities that the head of the U.S. Anti Doping-Agency said has led to ...