Russia's Natalya Antyukh, right, beats United States' Lashinda Demus in the women's 400-meter hurdle finals during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Wednesday, Aug. 8, 2012. (AP Photo/Mark Duncan)
Russia's Natalya Antyukh, right, beats United States' Lashinda Demus in the women's 400-meter hurdle finals during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Wednesday, Aug. 8, 2012. (AP Photo/Mark Duncan)