Jamaica's Usain Bolt celebrates winning gold in the 4x100 relay on Friday, August 19. The victory caps off an unprecedented "triple-triple": three straight Olympic golds in the 100 meters, the 200 meters and the 4x100. Lee Jin-man/AP The United States won gold in the women's 4x100. The winning team was comprised of English Gardner, Allyson Felix, Tianna Bartoletta and Tori Bowie. Cameron Spencer/Getty Images
DeAndre Jordan (No. 6) celebrates a dunk during a semifinal victory against Spain. The Americans won 82-76 and will play Serbia in the gold-medal game. Christian Petersen/Getty Images
U.S. pole vaulter Jenn Suhr competes in the final. Matt Dunham/AP
Spain's Carolina Marin won gold in badminton singles. Kin Cheung/AP
New Zealand's Eliza McCartney competes in the pole vault final. Matt Slocum/AP
Members of Russia's water polo team celebrate after defeating Hungary to win the the bronze. Eduardo Verdugo/AP
British field hockey players defend their goal during the gold-medal match against the Netherlands. Great Britain won in a shootout. MANAN VATSYAYANA/AFP/Getty Images
Venezuelan diver Robert Paez competes in the 10-meter platform event. MARTIN BUREAU/AFP/Getty Images
Water is splashed onto Chinese middleweight boxer Li Qian between rounds of her semifinal bout against the Netherlands' Nouchka Fontijn. YURI CORTEZ/AFP/Getty Images
A synchronized swimmer from China performs during the team's free routine. CHRISTOPHE SIMON/AFP/Getty Images
Australia's Scott Keach falls off Fedor during jumping qualifications. JOHN MACDOUGALL/AFP/Getty Images
Australia's Caroline Buchanan crashes out of the BMX semifinals. Ryan Pierse/Getty Images
Fazliddin Gaibnazarov, a boxer from Uzbekistan, reacts after he defeated Russia's Vitaly Dunaytsev in the light-welterweight semifinal. Sean M. Haffey/Getty Images
Brazilian goalkeeper Barbara collides with her teammate Monica during the bronze-medal match against Canada. Canada won 2-1. Alexandre Schneider/Getty Images
Japanese freestyle wrestler Sosuke Takatani, in blue, competes against France's Zelimkhan Khadjiev. Alex Livesey/Getty Images
Ekaterina Volkova, a rhythmic gymnast from Finland, takes part in qualification for the individual all-around. BEN STANSALL/AFP/Getty Images
Sun Yating of China is challenged by a Brazilian player in a water polo match. Adam Pretty/Getty Images
Athletes compete in the 50-kilometer race walk. JEWEL SAMAD/AFP/Getty Images