Jamaica's Asafa Powell looks at the scoreboard after running in the men's 100m final during the London 2012 Olympic Games in this file photo taken August 5, 2012. Powell was banned for 18 months by a ... more 
Jamaica's Asafa Powell looks at the scoreboard after running in the men's 100m final during the London 2012 Olympic Games in this file photo taken August 5, 2012. 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. REUTERS/Lucy Nicholson/Files (BRITAIN - Tags: SPORT OLYMPICS ATHLETICS CRIME LAW) less 
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Reuters | Photo By LUCY NICHOLSON / REUTERS
Thu, Apr 10, 2014 11:35 AM EDT