Article Photos: Kirdyapkin wins 50K walk; Bolt aiming for record



Ethiopia's Meseret Defar reacts as she crosses the finish line to win the 5000-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 10, 2012. (AP Photo/Anja Niedringhaus)

Ethiopia's Meseret Defar reacts as she crosses the finish line to win the 5000-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 10, 2012. (AP Photo/Anja Niedringhaus)