Beijing Olympics 100 metres hurdles champion Dawn Harper-Nelson has been banned for three months after she tested positive for the banned diuretic hydrochlorothiazide, the United States Anti-Doping Agency (USADA) said on Tuesday.
Summary of sports events and persons who made news on Tuesday.
A summary of sports events and persons who made news on Monday.
American champion Tyson Gay continued his impressive buildup to next month's World championships on Thursday by winning the 100 metres at Lausanne's Athletissima Diamond League meeting in 9.79 seconds.
Usain Bolt answered questions over his fitness ahead of the world championships with a season's best of 9.87 seconds in the 100 metres with a workmanlike performance at the London Anniversary Games on Friday.
Justin Gatlin blasted out a warning that he is ready to challenge Usain Bolt's 100 metres hegemony when he stormed to a lifetime best 9.74 seconds to win the event in the opening Diamond League meeting of the season on Friday.
Ethiopia's Genzebe Dibaba eased through to the finals of the women's 5,000 metres on Thursday to stay on course for a world athletics championships double, while American Brittney Reese saw her six-year long jump reign end.
Australia's Sally Pearson completed one of the great sporting comebacks when she overcame two years of injury agony to win the world 100 metres hurdles title at the age of 30.
Hansle Parchment of Jamaica was second in 13.03 and Olympic champion and world record holder Aries Merritt claimed bronze in 13.04 seconds.
American swimmer Michael Phelps, the most decorated Olympian of all time, said on Tuesday he hopes this year's Rio Olympics can help heal a sports world hit by recent doping and corruption cases.