Olympic champion Elaine Thompson's mentor Jerry Holness joins as Indian women's 400m coach
Shelly-Ann Fraser surged to Jamaica's first Olympic women's 100 metres gold medal on Sunday and led compatriots Sherone Simpson and Kerron Stewart to the event's first national podium sweep.
Sportswear company Adidas has suspended its contract with Tyson Gay after the former double world sprint champion failed an out-of-competition dope test, it said on Monday.
Chris Xuereb, the masseur and fitness advisor of Asafa Powell and Sherone Simpson, has denied providing the two Jamaican sprinters with performance-enhancing drugs and said they should take responsibility for their failed dope tests.
The World Anti-Doping Agency expressed its frustration after plans to launch an ''extraordinary'' audit into allegations that Jamaica's athletes were rarely drug-tested before the London 2012 Games were pushed back until 2014.
Jamaican sprinter Sherone Simpson, who tested positive for a banned substance last year, told a disciplinary panel on Tuesday that she saw no "red flags" before taking a supplement supplied by her trainer.
Jamaican sprinter Asafa Powell, who tested positive for a banned substance last year, told a disciplinary panel on Tuesday he did not list the supplements he was taking because he could not remember their names.
The under-fire Jamaica Anti-Doping Commission (JADCO) has appointed a new executive director just three days before the start of a World Anti-doping Agency (WADA) audit of its operations, the Jamaican government said on Friday.
Former 100 metres world record holder Asafa Powell was banned for 18 months by a Jamaican anti-doping disciplinary panel on Thursday after he tested positive for a banned substance last year.
The coach of Jamaican sprinters Asafa Powell and Sherone Simpson said on Tuesday they were not to blame after the Olympic medallists failed dope tests.
World Anti-Doping Agency (WADA) chief John Fahey has slammed Jamaican authorities for failing to accommodate an independent audit of their anti-doping regime until next year.
The Jamaica Anti-Doping Commission (JADCO) has hit back at allegations of poor administration and a lack of controls by a former official, insisting the authority's practices meet global standards.
Jamaica's Olympic sprint champion Usain Bolt has "no problem" with plans by the World Anti-Doping Agency (WADA) to test the hair follicles of athletes in a bid to clamp down on drug cheats in sport.
Olympic sprint champion Usain Bolt said on Saturday that controversy over Jamaica's anti-doping programme is scaring off potential sponsors and costing him money.
Olympic discus thrower Allison Randall on Monday became the third athlete to confirm a positive drugs test from the Jamaican trials in June following Sunday's revelations by sprinters Asafa Powell and Sherone Simpson.
The Jamaican was cagey when asked about the latest batch of positive tests and though he stopped short of condemning his rivals, he did issue a reminder of the principle that every athlete is responsible for what they put into their body.
A summary of Thursday's events at the World Athletics Championships.
Summary of sports events and persons who made news on Thursday.
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