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Adidas suspends contract with American sprinter Tyson Gay following failed drugs test - Mirror Online
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We celebrated Michael Phelps's genetic differences. Why punish Caster Semenya for hers? - The Washington Post
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Sprinter Tyson Gay failed more than one drugs test this year, says source | Tyson Gay | The Guardian
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Shocked' Asafa Powell vows to return to athletics after failed drug test | The Independent | The Independent
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