Kim Junghwan of South Korea, reacts against Diego Occhiuzzi of Italy, during their men's team saber fencing semifinal match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London.(AP Photo/Ivan Sekretarev)

Canada's Monique Sullivan laps the track after racing in the first ever Olympic women's keirin final during the 2012 Summer Olympics in London on Friday, August 3, 2012. Sullivan placed sixth. (AP Photo/Sean Kilpatrick, Canadian Press)

Canada's Jason Burnett, from Etobicoke, Ont., performs in the men's trampoline final at 2012 Summer Olympics Friday, August 3, 2012 in London. Burnett finished in last place. (AP Photo/Ryan Remiorz, Canadian Press)

Cuba's Robeisy Ramirez Carrazana leaves the ring after defeating Thailand's Chatchai Butdee in a men's flyweight 52-kg preliminary boxing match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London.(AP Photo/Patrick Semansky)

The Canadian women's team pursuit rides in qualification during the 2012 Summer Olympics in London on Friday, August 3, 2012. (AP Photo/Sean Kilpatrick, Canadian Press)

From left, Canada's Brianne Theisen, Britain's Jessica Ennis, Canada's Jessica Zelinka, Belgium's Sara Aerts, Russia's Olga Kurban, Russia's Tatyana Chernova, and Netherlands' Dafne Schippers compete in a 200-meter heptathlon during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Daniel Ochoa De Olza)

Tania Cagnotto of Italy dives during women's 3-meter springboard diving preliminaries at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Mark J. Terrill)e

Japan's Masaki Ito performs during the men's trampoline competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Gregory Bull)

Britain's Freddie Evans, left, fights Lithuania's Egidijus Kavaliauska during a men's welterweight 69-kg preliminary boxing match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Ng Han Guan)

United States' Evan Jager, right, and Turkey's Tarik Langat Akdag compete in a men's 3000-meter steeplechase heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/David J. Phillip )

This aerial photo shows the Olympic beach volleyball venue during the 2012 Summer Olympics on Friday, Aug. 3, 2012, in London. (AP Photo/Jeff J Mitchell, Pool)

Jaele Patrick of Australia dives during women's 3-meter springboard diving preliminaries at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Mark J. Terrill)

Andrea Blas Martinez of Spain, second left reacts as she watches her team play Hungary during their women's water polo preliminary round match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Alastair Grant)

Cuba's Idalys Ortiz celebrates after defeating Japan's Mika Sugimoto to win the gold medal in the women's over 78-kg judo competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Paul Sancya)

Greece's Niki Panetta makes an attempt in the women's Triple Jump qualification at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/David J. Phillip)

France's Teddy Riner competes with Russia's Alexander Mikhaylin in the gold medal match at the men's over 100-kg judo competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Mike Groll)

Turkey's Tarik Langat Akdag, left, and France's Mahiedine Mekhissi-Benabbad, right compete in a men's 3000-meter steeplechase heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/David J. Phillip )

Britain's Grace Carter (18) tugs at her shirt as she stands with her teammates after losing to the Dominican Republic in a women's preliminary volleyball match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. Britain lost in three sets. (AP Photo/Jeff Roberson)

Switzertland's Yannick Brauchli and Romuald Hausser compete during the 470 men class race at the London 2012 Summer Olympics, Friday, Aug. 3, 2012, in Weymouth and Portland, England. (AP Photo/Bernat Armangue)

Paolo Nicolai of Italy is pulled into the crowd following a two set win over the United States during a beach volleyball match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Dave Martin)

Serena Williams of the United States serves to Victoria Azarenka of Belarus at the All England Lawn Tennis Club in Wimbledon, London at the 2012 Summer Olympics, Friday, Aug. 3, 2012. (AP Photo/Elise Amendola)

North Korea's Kim Jong, left, returns a shot to Great Britain's Na Liu during the women's team table tennis competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Sergei Grits)

The New Zealand team compete in a track cycling men's team pursuit event, during the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Christophe Ena)

Italy's Libiana Grenot, Romania's Bianca Razor, Jamaica's Novlene Williams-Mills and Brazil's Joelma Sousa, from left, compete in a women's 400-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Martin Meissner)

Maria Sharapova of Russia celebrates after winning a point against Maria Kirilenko of Russia at the All England Lawn Tennis Club at Wimbledon, in London, at the 2012 Summer Olympics, Friday, Aug. 3, 2012. (AP Photo/Mark Humphrey)

Japan's Yasuhiro Ueyama performs during the men's trampoline qualifications at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Julie Jacobson)

Germany's Henrik Stehlik performs during the men's trampoline competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Gregory Bull)

China's Sun Yang, left, and Denmark's Pal Joensen dive in for the start of a 1500-meter freestyle swimming heat at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Mark J. Terrill)

Italy's Yuri Floriani reacts after the men's 3000-meter steeplechase during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Anja Niedringhaus)

Nadezda Evstyukhina of Russia reacts after her third no-lift to fail to advance in the competition during the women's 75-kg, group A, weightlifting competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Andrew Medichini)

China's Xu Chen, above left, and playing partner Ma Jin play against Zhang Nan, below left, and Zhao Yunlei, also from China, in the badminton mixed doubles gold medal match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. Zhang and Zhao won 21-11, 21-17. (AP Photo/Andres Leighton)

Croatia's Ana Lelas (11) drives past Angola's Astrida Vicente (12) and Catarina Camufal (4) during a preliminary women's basketball game at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Eric Gay)

Ahmad Saber Hamcho, of Syria, leaves a training session for the equestrian show jumping competition on his horse Wonderboy, at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/David Goldman)

France's Florent Manadou is embraced by his sister Laure after winning the men's 50-meter freestyle swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Lee Jin-man)

France's Florent Manadou reacts to his gold medal win in the men's 50-meter freestyle swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Michael Sohn)

Helen Langehanenberg of Germany reacts after she competes with her horse Damon Hill during the equestrian dressage competition, at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Markus Schreiber)

United States' Tobin Heath, right, fights for the ball with New Zealand's Ria Percival during their quarter-final women's soccer match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, at the St James' Park in Newcastle, England. (AP Photo/Sergey Ponomarev)

Tarjei Skarlund of Norway digs out a ball during a beach volleyball match against Latvia at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Dave Martin)

China's Ma Zengyu dribbles the ball down court against Turkey's Nilay Kartaltepe during a women's basketball game at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Charles Krupa)

Hannah Mills and Saskia Clark of Great Britain sail during the 470 Women's dinghy race at the London 2012 Summer Olympics, Friday, Aug. 3, 2012, in Weymouth and Portland, England. (AP Photo/Francois Mori)

The Olympic rings are reflected in United States' Daryl Homer's face mask during a quarterfinal match at men's team saber fencingat the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Dmitry Lovetsky)

Aldo Montano, left, and Luigi Samele both from Italy, react after their team won the bronze medal match against Russia during men's team saber fencing at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London.(AP Photo/Dmitry Lovetsky)

Japanese players celebrate and thank the audience at the end of the women's soccer quarter-final match between Japan and Brazil, at the Millennium Stadium in Cardiff, Wales, at the 2012 London Summer Olympics, Friday, Aug. 3, 2012. Japan won 2-0 and advances to the semi-finals. (AP Photo/Luca Bruno)

An Austrialian cyclist warms up for a track cycling event at the velodrome during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Christophe Ena)

The Olympic rings on the side of the Aquatic Center are reflected on a puddle from morning showers as people enter Olympic Park at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Julio Cortez)

James Williams of the United States, reacts against Alexey Yakimenko of Russia, during a quarterfinal match at men's team saber fencingat the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Dmitry Lovetsky)

Miranda Tatari (2) and Sonja Basic of Croatia try to stop Katarina Bulatovic of Montenegro, top, during their women's handball preliminary match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Matthias Schrader)

Won Woo-young of South Korea, reacts as Rares Dumitrescu of Romania, after South Korea won the gold medal match during men's team saber fencing at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Ivan Sekretarev)

This aerial photo shows the Olympic beach volleyball venue during the 2012 Summer Olympics on Friday, Aug. 3, 2012, in London. (AP Photo/Jeff J Mitchell, Pool)

Germany's Judith Arndt, left, Lisa Brennauer, center, and Charlotte Becker compete in a track cycling women's team pursuit event, during the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London.during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Matt Rourke)

Japan's Yasuhiro Ueyama performs during the men's trampoline finals at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Gregory Bull)

Masses of people visit the Olympic park during the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Martin Meissner)

Injured Jung Yura of South Korea lies on the ground during the women's handball preliminary match against France at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Matthias Schrader)

Florin Zalomir of Romania, reacts after his match against Alexey Yakimenko of Russia, during the semifinals of men's team saber fencing at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Dmitry Lovetsky)

France's Mahiedine Mekhissi-Benabbad, right, competes in a men's 3000-meter steeplechase heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/David J. Phillip )

Jennifer Abel of Canada dives during women's 3-meter springboard diving preliminaries at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Mark J. Terrill)

Lidia Valentin Perez of Spain competes during the women's 75-kg, group A, weightlifting competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Hassan Ammar)

Water polo referee Svetlana Dreval holds the ball in a timeout as Spain play Hungary during their women's water polo preliminary round match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Alastair Grant)

Members of the Spanish women's water polo team react after they defeated Hungary during their women's water polo preliminary round match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Alastair Grant)

Aldo Montano of Italy, displays his painted hair while watching a semifinal match during men's team saber fencing at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London.(AP Photo/Ivan Sekretarev)

Britain's Victoria Pendleton talks to a team staffer whose face is reflected in her helmet, prior to start a women's track cycling keirin heat, during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Christophe Ena)

Larissa Franca from Brazil signals to her teammate during the Beach Volleyball match against Netherlands at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Petr David Josek)

Svetlana Podobedova of Kazakhstan performs her final lift to win the gold medal during the women's 75-kg, group A, weightlifting competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Hassan Ammar)

Maria Sharapova of Russia celebrates her win over Maria Kirilenko of Russia at the All England Lawn Tennis Club at Wimbledon, in London, at the 2012 Summer Olympics, Friday, Aug. 3, 2012. (AP Photo/Mark Humphrey)

Ethiopia's Tirunesh Dibaba crosses the finish line to win gold in the women's 10,000-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Anja Niedringhaus)

Maria Sharapova of Russia returns a shot to Maria Kirilenko of Russia at the All England Lawn Tennis Club at Wimbledon, in London, at the 2012 Summer Olympics, Friday, Aug. 3, 2012. (AP Photo/Mark Humphrey)

Martins Plavins from Latvia eyes a ball during the Beach Volleyball match against Norway at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Petr David Josek)

France's Gregoire Pennes performs during the men's trampoline qualification at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Gregory Bull)

Juliana Silva, rear, of Brazil, reacts with teammate Larissa Franca following a two set win over the Netherlands during a beach volleyball match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Dave Martin)

Somalia's Zamzam Mohamed Farah crosses the finish line of a women's 400-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Martin Meissner)

Australia's Emily Seebohm touches at the end of the first leg of the women's 4 x 100-meter medley relay at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Mark J. Terrill)

Somalia's Zamzam Mohamed Farah competes in a women's 400-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Anja Niedringhaus)

South Korea's Park Tae-Hwan, right, and Canada's Ryan Cochrane dive in for the start of a 1500-meter freestyle swimming heat at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Mark J. Terrill)

Britain's Jessica Ennis makes an attempt in the High Jump of the women's Heptathlon during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Matt Dunham)

United States' Katie Ledecky reacts after her gold medal win in the women's 800-meter freestyle swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Lee Jin-man)

Germany's David Storl competes in the men's shot put final during the athletics competition in the Olympic Stadium at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London.(AP Photo/David J. Phillip )

France's Teddy Riner reacts after defeating Russia's Alexander Mikhaylin to win the gold medal at the men's over 100-kg judo competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Paul Sancya)

The Danish team compete in a track cycling men's pursuit event, during the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Christophe Ena)

Kenya's Sally Jepkosgei Kipyego leads the pack in the women's 10,000-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Matt Dunham)

Croatia's Sandra Perkovic makes an attempt during the women's discus qualification at the athletics competition in the Olympic Stadium at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Matt Dunham)

Ethiopia's Tirunesh Dibaba, right, is embraced by Ethiopia's Werknesh Kidane after she won gold in the women's 10,000-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Ben Curtis)

Australia's Blake Gaudry performs during the men's trampoline competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Gregory Bull)

Tania Cagnotto from Italy competes during the Women's 3-meter springboard diving preliminaries at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Michael Sohn)

Ann Grete Norgaard of Denmark celebrates after scoring during the women's handball preliminary match against Norway at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Matthias Schrader)

Canada's James Steacy makes an attempt in the men's Hammer Throw qualification during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Matt Dunham)

Judges watch the women's 3-meter springboard diving preliminaries at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Mark J. Terrill)

Gabriel Sincraian of Romania competes during the men's 85-kg, group A, weightlifting competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Hassan Ammar)

Anna Vozakova of Russia reacts after missing a dig on a ball during a beach volleyball match against Austria at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Dave Martin)

Serena Williams of the United States celebrates victory in her Semi-Final with Victoria Azarenka of Belarus on Centre Court in the Women's Singles at the Olympic Tennis Venue, at the All England Lawn Tennis Club in Wimbledon, London, at the 2012 Summer Olympics, on Friday, Aug 3, 2012. (AP Photo/Mark Allan)

Andy Murray, of Great Britain, in action against Novak Djokovic, of Serbia during his Semi-Final match on Centre Court in the Men's Singles at the Olympic Tennis Venue, Wimbledon, London, at the 2012 Summer Olympics, on Friday, Aug. 3, 2012. (AP Photo/Mark Allan)

Roger Federer, of Switzerland, after winning his epic Semi Final match hugs opponent Juan Martin del Potro of Argentina on Centre Court in the Men's Singles at the Olympic Tennis Venue, Wimbledon, London, at the 2012 Summer Olympics, on Friday, Aug. 3, 2012. (AP Photo/Mark Allan)

China's Sun Yang competes in a 1500-meter freestyle swimming heat at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012.(AP Photo/Julio Cortez)

Helen Langehanenberg, of Germany, kisses her horse Damon Hill, after they compete in the equestrian dressage at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/David Goldman)

India's Krishan Vikas, left, fights United States' Errol Spence during a men's welterweight 69-kg preliminary boxing match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Patrick Semansky)

This aerial photo shows the Olympic beach volleyball venue during the 2012 Summer Olympics on Friday, Aug. 3, 2012, in London. (AP Photo/Jeff J Mitchell, Pool)

Egypt's Tarek Abdelazim reacts after clearing a weight during the men's 85-kg group A, weightlifting competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Morry Gash)

Cubs's Idalys Ortiz reacts during the women's over 78-kg judo competition against Cape Verde's Adysangela Moniz at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Paul Sancya)

Italy's Flavio Cannone performs during the men's trampoline qualifications at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Julie Jacobson)

Japan's Masaki Ito performs during the men's trampoline qualifications at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Julie Jacobson)

Martin Spinnangr of Norway sets the ball during a two set loss to Latvia during a beach volleyball match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Dave Martin)

Gold medallist Dong Dong of China performs during his trampoline exercise at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Gregory Bull)

Rowie Webster of Australia shoots at goal during their women's water polo preliminary round match against Russia at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Alastair Grant)

Nadine Zumkehr, left, from Switzerland tries to block Jennifer Kessy, right, of US during their Beach Volleyball match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Petr David Josek)

Dominican Republic's Brenda Castillo, top, saves the ball as Britain's Lucy Wicks looks on during a women's preliminary volleyball match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Jeff Roberson)

United States' Missy Franklin competes in the women's 200-meter backstroke final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Julio Cortez)

This aerial photo shows the Olympic Stadium during the 2012 Summer Olympics at Olympic Park on Friday, Aug. 3, 2012, in London. (AP Photo/Jeff J Mitchell, Pool)

Hungary's Krisztian Pars makes an attempt in the men's Hammer Throw qualification during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Matt Dunham)

Dutch cyclist Willy Kanis adjusts her helmet before the start of a track cycling women's keirin heat during the 2012 Summer Olympics in London, Friday, Aug. 3, 2012. (AP Photo/Christophe Ena)

Ukraine's Viktor Ruban shoots during the men's individual archery competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Marcio Jose Sanchez)

USA's Diana Taurasi grabs a rebound against Czech Republics's Michaela Zrustova during a women's basketball game at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Charles Krupa)

Britain's Lynne Beattie, top, spikes the ball over Dominican Republic's Karla Miguelina Echenique Medina during a women's preliminary volleyball match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Jeff Roberson)

Britain's Andrew Selby, left, reacts after defeating Kazakhstan's Ilyas Suleimenov in a men's flyweight 52-kg preliminary boxing match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Ng Han Guan)

Simona Abbate of Italy gets ready to pass the ball during their women's water polo preliminary round match against Britain at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Alastair Grant)

Juan Manuel Mundoz Diaz of Spain rides his horse Fuego during the equestrian dressage competition, at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Markus Schreiber)

Nigeria's Blessing Okagbare reacts after competing in a women's 100-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Anja Niedringhaus)

Ma Huanhuan of China takes a penalty and scores a goal during their women's water polo preliminary round match against the United States at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Alastair Grant)

Abdelhay Saad Abdelrazek Ragab of Egypt competes during the men's 85-kg, group A, weightlifting competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Hassan Ammar)

Madias Dodo Nzesso Ngake of Cameroon competes during the women's 75-kg, group B, weightlifting competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Andrew Medichini)

Martins Plavins of Latvia reacts after a two set win over Norway during a beach volleyball match at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Dave Martin)

Richard Gasquet, left, serves as he and doubles partner Julien Benneteau of France play Mike and Bob Bryan of the United States at the All England Lawn Tennis Club at Wimbledon, in London, at the 2012 Summer Olympics, Friday, Aug. 3, 2012. (AP Photo/Mark Humphrey)

New Zealand's Nicholas Willis, right, leads the pack in a men's 1500-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Daniel Ochoa De Olza)

United States' Ryan Whiting warms up for the men's shot put final during the athletics competition in the Olympic Stadium at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/David J Phillip)

This aerial photo shows the Olympic beach volleyball venue during the 2012 Summer Olympics on Friday, Aug. 3, 2012, in London. (AP Photo/Jeff J Mitchell, Pool)

Britain's Jessica Ennis smiles after winning her 100-meter hurdles heat of the Women's Heptathlon during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Friday, Aug. 3, 2012. (AP Photo/Anja Niedringhaus)

Denmark's Peter Jensen performs during the men's trampoline qualification at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Gregory Bull)

Maria Fernanda Valdes of Chile competes during the women's 75-kg, group B, weightlifting competition at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Andrew Medichini)

Anastasia Vasina of Russia plays the ball during a beach volleyball match against Austria at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Dave Martin)

Spectators watch a performance during the men's trampoline qualifications at the 2012 Summer Olympics, Friday, Aug. 3, 2012, in London. (AP Photo/Julie Jacobson)