Jamaica's Usain Bolt crosses the finish line to win the gold in the men's 200-metre final. (AP Photo/David J. Phillip)
Belarus' gold medal winner Aksana Miankova makes an attempt in the women's hammer final. (AP Photo/Julie Jacobson)
Winner Yulis Gabriel Mercedes of the Dominican Republic, red, flies at Chu Mu-Yen of Taiwan during a quarterfinal match for the men's taekwondo 58kg class. (AP Photo/Matt Dunham)
Men's 1500m bronze medalist Nick Willis of New Zealand waves with his medal during the awarding ceremony. (AP Photo/Petr David Josek)
New Zealand's Mike Walker, right, and Steven Ferguson train for the K2 kayak 1000m. (AP Photo/Kirsty Wigglesworth)
Argentina's Agustina Garcia waves after their 5-2 loss to the Netherlands during their women's semifinal hockey match. (AP Photo/Rick Rycroft)
Bahrain's Roqaya Al-Gassra, left, and France's Muriel Hurtis-Houairi rest on the track after their semifinal of the women's 200m. (AP Photo/Julie Jacobson)
Jamaica's Usain Bolt leaves the track barefoot after winning the men's 200m final with a world record. (AP Photo/Thomas Kienzle)
Spain's Iker Romero is tackled by Yoon Kyungmin, right, during their men's handball quarterfinal match. (AP Photo/Sergey Ponomarev)
New Zealand's windsurfer Tom Ashley is being carried on his windsurfer by team members after winning gold. (AP Photo/Herbert Knosowski)
