From left, Thailand's Jumrut Rittidech, Malaysia's Rayzam Shah Wan Sofian, Jamaica's Andrew Riley, United States' David Oliver, Greece's Konstadinos Douvalidis and Poland's Artur Noga compete in a men's 110-meter heat at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Sunday, Aug. 11, 2013. (AP Photo/Martin Meissner)