Sofia Assefa of Ethiopia, foreground left, and Asli Cakir of Turkey, foreground right, clear the water jump in a women's 3000m steeplechase heat. (AP Photo/Petr David Josek)
China's Chen Xiaoli, center, scrambles for a loose ball with Mali's Nagnouma Coulibaly, left, and Djenebou Sissoko, right. (AP Photo/Eric Gay)
Rafael Nadal of Spain reacts after defeating Novak Djokovic of Serbia in a men's singles tennis semifinal. (AP Photo/Elise Amendola)
New Zealand rider Katie McVean goes over her horse Forest at fence during the first qualifying round for the Equestrian Show Jumping competition. (AP Photo/Kin Cheung)
China's gymnast Yang Yilin performs on balance beam during the womens' gymnastics individual all-around competition. (AP Photo/Amy Sancetta)
Runners in the women's 10,000-metre final start the race. (AP Photo/Kevin Frayer)
New Zealand's Peter Taylor, front, and Storm Uru react after their lightweight men's double sculls semifinal. (AP Photo/Chuck Burton, IOPP
Athletes compete in the 200-metrr race of the women's hepatathlon. (AP Photo/Greg Baker)
Guam's Ricardo Blas Jr. reacts after losing to USA's Daniel McCormick at the men's judo +100kg heavyweight division preliminaries. (AP Photo/Charles Dharapak)
