Usain Bolt tells reporters `` I 'm clean '' ahead of London Diamond League meeting . `` If you were following me since 2002 you would know that I have been doing phenomenal things since I was 15 , '' the 100 meter and 200 meter world record holder told reporters ahead of this weekend 's Diamond League meeting in London . Powell and Gay failed drugs tests earlier this month . Tyson Gay and Tyson Gay both deny knowingly taking banned substances . A Caribbean international footballer fails a drugs test during a World Cup qualifier .
Usain Bolt tells reporters `` I 'm clean '' ahead of London Diamond League meeting . Powell and Gay failed drugs tests earlier this month . Tyson Gay and Tyson Gay both deny knowingly taking banned substances . A Caribbean international footballer fails a drugs test during a World Cup qualifier .