DAEGU, SOUTH KOREA - SEPTEMBER 02: Bershawn Jackson of the USA celebrates victory in the men's 4x400 metres relay final during day seven of 13th IAAF World Athletics Championships at Daegu Stadium on... more 
DAEGU, SOUTH KOREA - SEPTEMBER 02: Bershawn Jackson of the USA celebrates victory in the men's 4x400 metres relay final during day seven of 13th IAAF World Athletics Championships at Daegu Stadium on September 2, 2011 in Daegu, South Korea. (Photo by Mark Dadswell/Getty Images) less 
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Getty Images | Photo By Mark Dadswell / Getty Images
Fri, Sep 2, 2011 9:07 AM EDT