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DAEGU, SOUTH KOREA - AUGUST 29: Cornel Fredericks of South Africa competes in the men's 400 metres hurdles heats during day three of the 13th IAAF World Athletics Championships at the Daegu Stadium on August 29, 2011 in Daegu, South Korea. (Photo by Andy Lyons/Getty Images)

DAEGU, SOUTH KOREA - AUGUST 29: Cornel Fredericks of South Africa competes in the men's 400 metres hurdles heats during day three of the 13th IAAF World Athletics Championships at the Daegu Stadium on August 29, 2011 in Daegu, South Korea.  (Photo by Andy Lyons/Getty Images)