Gold medalist Lashinda Demus of the U.S. (C) stands on the podium between silver medalist Melaine Walker of Jamaica (L) and bronze medalist Natalya Antyukh of Russia (R) after their women's 400 metres hurdles event at the IAAF World Championships in Daegu September 2, 2011. REUTERS/Lee Jae-Won (SOUTH KOREA - Tags: SPORT ATHLETICS)