United States' Brianna Rollins, second from left, crosses the finish line ahead of Australia's Sally Pearson, third from left, Britain's Tiffany Porter, right, United States' Dawn Harper, second from right, and Russia's Yuliya Kondakova in the women's 100-meter hurdles final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Saturday, Aug. 17, 2013. (AP Photo/Martin Meissner)