U.S. gymnasts, from left to right, Gabrielle Douglas, Alexandra Raisman, Jordyn Wieber, McKayla Maroney and Kyla Ross react as they watch the screen that displays results declaring them winners of the gold medal during the Artistic Gymnastic women's team final at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Gregory Bull)

Russian gymnasts and team officials react as teammate Kseniia Afanaseva falls while performing on the floor during the Artistic Gymnastics women's team final at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Matt Dunham)

U.S. gymnast Gabrielle Douglas performs on the balance beam during the Artistic Gymnastics women's team final at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Julie Jacobson)

Gymnast Jennifer Pinches from Britain performs on the balance beam during the Artistic Gymnastic women's team final at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Julie Jacobson)

Romania's gymnast Diana Maria Chelaru eyes the bar during her performance on the uneven bars at Artistic Gymnastics women's team final at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Julie Jacobson)

Japanese gymnast Kohei Uchimura lands at the end of his routine on the pommel horse during the Artistic Gymnastic men's team final at the 2012 Summer Olympics, Monday, July 30, 2012, in London. After judges spent about five minutes reviewing three-time world champion Uchimura on the pommel horse, his score was revised and Japan was awarded the silver medal with Britain getting bumped down to bronze.(AP Photo/Julie Jacobson)

South Africa's Chad le Clos celebrates winning gold in the men's 200-meter butterfly swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Tuesday, July 31, 2012. (AP Photo/Mark J. Terrill)

United States' Michael Phelps, front, and South Africa's Chad le Clos compete in the men's 200-meter butterfly swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Tuesday, July 31, 2012. Le Clos won gold, Phelps silver. (AP Photo/Matt Slocum)

United States' Michael Phelps reacts after winning silver in the men's 200-meter butterfly swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Tuesday, July 31, 2012. (AP Photo/Matt Slocum)

Swimmers start in a men's 100-meter freestyle swimming heat at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Tuesday, July 31, 2012. (AP Photo/Matt Slocum)

Chen Ruolin and Wang Hao of China compete during the women's synchronized 10-meter platform diving final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Tuesday, July 31, 2012. China won the gold medal in the event. (AP Photo/Mark J. Terrill)

Meaghan Benfeito and Roseline Filion of Canada compete during the women's synchronized 10-meter platform diving final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Tuesday, July 31, 2012. Canada won the bronze medal in the event. (AP Photo/Mark J. Terrill)

Goalkeeper Stefano Tempesti of Italy is unable to stop a penalty shot by Christos Afroudakisv of Greece during a preliminary men's water polo match at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Julio Cortez)

Water runs down the cap strap of Aaron Younger of Australia during a preliminary men's water polo match against Kazakhstan at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. Australia won 7-4. (AP Photo/Julio Cortez)

Argentina's Alexis Gonzalez (16) dives for the ball during a men's volleyball preliminary match against Italy at the 2012 Summer Olympics Tuesday, July 31, 2012, in London. (AP Photo/Chris O'Meara)

Jiao Li of the Netherlands competes against Li Xiaoxia of China during the women's singles table tennis competition at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Sergei Grits)

China's Gao Lihua, left, and Belgium's Lieselotte van Lindt battle to control possession of the ball during their women's preliminary hockey match at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. Belgium's goal was disqualified and the match ended scoreless. (AP Photo/Bullit Marquez)

Denmark's Kamilla Rytter Juhl, foreground, and Christinna Pedersen, center, celebrate after beating China's Zhao Yunlei, right, and Tian Qing, at a women's doubles badminton match of the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Saurabh Das)

Two Chinese fans pause for photos prior to the Women's Synchronized 10 Meter Platform Diving final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics, London, Tuesday, July 31, 2012. (AP Photo/Jae C. Hong)

A supporter of Lithuania reacts during the team's basketball game against Nigeria at the 2012 Summer Olympics on Tuesday, July 31, 2012, in London. (AP Photo/Emilio Morenatti)

Spain's Pau Gasol lays up a shot as he breaks past Australia's Aron Baynes at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Charles Krupa)

China's Wang Zhizhi, center, tries to block Russia's Sergey Monya on a drive to the basket at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Charles Krupa)