Clement clears a hurdle as he competes with Zyl in the men's hurdles final during the IAAF World Athletics...
Kerron Clement of the U.S. (L) clears a hurdle as he competes with L.J. Van Zyl of Russia (R) in the men's 400 metres hurdles final during the IAAF World Athletics Final at Kaftazoglio Stadium in Thessaloniki September 12, 2009. REUTERS/Grigoris Siamidis (GREECE SPORT ATHLETICS)