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Italy's Martina Grimaldi reacts after winning bronze in the women's 10km open water swimming marathon.

Charlie Riedel)/AP

Germany's Angela Maurer, front, and other athletes dive into the Serpentine at Hyde Park as they compete in the women's marathon swimming competition.

Mark J. Terrill/AP

Paola Espinosa Sanchez of Mexico dives during the women's 10-meter platform diving semifinal.

Mark J. Terrill/AP

Katie Bell of the United States dives during the women's 10-meter platform diving semifinal.

FRANCOIS XAVIER MARIT/AFP/Getty Images

Canadian teammates Marie-Pier Boudreau Gagnon, Stephanie Durocher, Jo-Annie Fortin, Chloe Isaac, Stephanie Leclair, Elise Marcotte, Valerie Welsh, and Tracy Little compete in the team technical routine during the synchronised swimming competition.

Toby Melvillev/REUTERS

China's team performs in the synchronized swimming teams technical routine competition.

Matt Rourke/AP

Cyclists compete in a BMX cycling men's quarterfinal run.

Mark Blinch/REUTERS

Germany's Ariane Friedrich reacts after a successful attempt during the women's high jump qualification.

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Evgeniya Kanaeva of Russia performs with the ball during the Rhythmic Gymnastics qualification.

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Croatia's Ana Simic competes in the women's high jump qualifying rounds.

Kim Kyung-Hoon/REUTERS

Iran's Mohammad Bagheri Motamed, left, kicks Brazil's Diogo Silva during their men's 150-pound and under semifinal taekwondo match.

Matt Dunham/AP

United States' Brigetta Barrett competes in a women's high jump qualification round.

KIRILL KUDRYAVTSEV/AFP/Getty Images

US player Destinee Hooker attempts to block during the women's semifinal volleyball match against South Korea.

TIMOTHY A. CLARY/AFP/Getty Images

Australian center Lauren Jackson, left, vies fr the ball with US forward Candace Parker.

Adrees Latif /REUTERS

South Korea's Choi Im Jeong , center, tries to shoot, blocked by Norway's Kari Mette Johansen, left, and Ida Alstad during their women's semifinal match.

Hussein Malla/AP

France's Eugenie Le Sommer, left, heads the ball against Canada's Lauren Sesselmann, right, during their women's bronze medal soccer match.

Pawel Kopczynski/REUTERS

Canada's Damian Warner competes in the men's decathlon discus throw event.

Gregory Bull/AP

Liubou Charkashyna of Belarus performs during the rhythmic gymnastics individual all-around qualifications.

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South Korea's Son Yeon Jae performs her hoop program during the individual all-around qualifications of the rythmic gymnastics event.

Brian Snyder /REUTERS

Egypt's Yasmine Mohmed Rostom competes using the ball in her individual all-around gymnastics qualification match.

Phil Noble/REUTERS

Russia’s Ilya Shkurenev competes in the men’s decathlon pole vault event.

Suhaib Salem/REUTERS

Ali Sue Bernard of the United States, in red, tussles with Sweden’s Jenny Fransson in the women’s 158-pound freestyle wrestling event.

Julia Vynokurova/Getty Images

Clarissa Kyoko Mei Ling Chun of the United States, in red, competes with Irini Merleni of Ukraine in the women’s freestyle 105-pound wrestling event.

Stefan Wermuth/REUTERS

Jamaica’s Usain Bolt reacts after winning the men’s 200-meter final.

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US players celebrate after US midfielder Carli Lloyd scored a goal during the final of the women’s soccer competition.

ALBERTO PIZZOLI/AFP/Getty Images

US player Claressa Shields of the United States celebrates defeating Nadezda Torlopova of Russia to win gold during the women’s middleweight boxing.

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Charlotte Dujardin of Britain riding Valegro poses with her gold medal following the individual dressage event.