Simon Cotton and Daniel Johnson query doping in athletics
Both football and athletics were rocked by doping allegations this summer, and two molecules with very similar structures were at the heart of the matter.
First came athletics, as two of Jamaica's finest sprinters, Asafa Powell and Sherone Simpson, tested positive for the banned stimulant oxilofrine. Tyson Gay, holder of the third fastest 100m time in history, also tested positive for a banned substance, but the drug in question is as yet unknown.
The second scandal threatens to rewrite decades of sporting history.
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