Pascal Martinot-Lagarde of France (R) clears a hurdle next to Xie Wenjun of China in the men's 110 meters hurdles heats during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow Aug 11, 2013.  [Photo/Agencies]

Ding Changqin of China (R) and Valeria Straneo of Italy run through the streets of Moscow in the women's marathon during the IAAF World Athletics Championships, Aug 10, 2013. [Photo/Agencies]