Athletes 'given supplements'

Paul Boyle, manager of Asafa Powell and Sherone Simpson, has told ITV News the athletes were given 'supplements' by their physiotherapist. He says if any of the supplements were not legal, they had been supplied unwittingly.

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Sprinter Tyson Gay 'fails dope test'

Tyson Gay is one of the fastest men in history, with a personal best of 9.69 seconds Credit: Kansas City Star/ABACA

American sprinter Tyson Gay says he has failed a dope test, Reuters are reporting.

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