Ukraine's Natallia Dobrynska reacts after missing a jump in the long jump heptathlon during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Matt Dunham)

Russia's Anna Sivkova reacts during a match with Ukraine's Olena Krvytska in women's team epee fencing at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Hassan Ammar)

FRom left, Japan's Yuzo Kanemaru, United States' Tony McQuay, Latvia's Janis Leitis compete in a men's 400-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Anja Niedringhaus)

In this photo taken with a fisheye lens, an athlete competes in the women's pole vault qualification round during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/David J. Phillip)

New Zealand's Shane Archbold competes in a track cycling men's Omnium event, during the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Matt Rourke)

Tunisia's Marouan Laghnej, second left, drives against France's Kevin Seraphin (4) and French guard Tony Parker during their men's preliminary round basketball game at the 2012 Summer Olympics on Saturday, Aug. 4, 2012, in London. (AP Photo/Mark Ralston, Pool)

Chen Xue of China sets the ball during a beach volleyball match against Russia at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Dave Martin)

Denmark's Mathias Boe, left, and Carsten Mogensen celebrate after beating South Korea's Chung Jae-sung and Lee Yong-dae in a men's doubles badminton semifinal match at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Andres Leighton)

Japan's Akiko Iwamoto and Atsumi Fukumoto recover after a lightweight women's rowing double sculls final B in Eton Dorney, near Windsor, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012. (AP Photo/Chris Carlson)

Denmark's Mathias Boe, fright foreground, and Carsten Mogensen, huddle together in an aembrace after beating South Korea's Chung Jae-sung, background, and Lee Yong-dae, unseen, at a men's doubles badminton semifinal match of the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Saurabh Das)

Japan's Mariko Adachi competes in the women's triathlon at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Jae C. Hong)

The sky darkens as a rain storm passes over the rowing venue in Eton Dorney, near Windsor, England, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012. (AP Photo/Kirsty Wigglesworth)

A man rides a bike past the Olympic rings at the rowing venue in Eton Dorney, near Windsor, England, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012. (AP Photo/Natacha Pisarenko)

Germany's, from left, Lukas Kampa (11), Denys Kaliberda (6), and Max Gunthor (15) protect the back of their heads on a serve against Tunisia during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. (AP Photo/Chris O'Meara)

South Africa's Oscar Pistorius prepares to compete in a men's 400-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012.(AP Photo/Anja Niedringhaus)

Germany's Britta Heidemann, left, competes against China's Li Na during their match in women's team epee fencing at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Hassan Ammar)

South Africa's Oscar Pistorius prepares to compete in a men's 400-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/David J. Phillip)

South Africa's Oscar Pistorius, left, and Jamaica's Rusheen McDonald compete in a men's 400-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/David J. Phillip )

Egypt's Fatma Rashed, left, and Sara Mohamed Baraka pause in the rain after a lightweight women's rowing double sculls final C in Eton Dorney, near Windsor, England, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012. (AP Photo/Natacha Pisarenko)

New Zealand's Nicky Samuels dives into the water for the start of the triathlon at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Jae C. Hong)

Kirill Skachkov of Russia competes against Zhang Jike of China during men's team table tennis competition at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Sergei Grits)

France's Ali Traore, right, reaches around and knocks the ball from Tunisia's Mohamed Hadidane during a men's basketball game at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Charles Krupa)

Ekaterina Khomyakova, left, and Evgenia Ukolova react during a beach volleyball match against Russia at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Dave Martin)

France's Tony Parker (9) drives to the basket between Tunisia's Makram Ben Romdhane (12) and Mokhtar Ghayaza (11) during a preliminary men's basketball game at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Eric Gay)

France's Tony Parker (9) drives to the basket as Tunisia's Mokhtar Ghayaza (11) defends during a preliminary men's basketball game at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Eric Gay)

Ekaterina Khomyakova from Russia reaches for a ball during the Beach Volleyball match against China at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Petr David Josek)

Evgenia Ukolova of Russia returns the ball during a beach volleyball match against China at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Dave Martin)

CARDIFF, Wales - Members of the Japan national team pose for a photograph before the kickoff of a women's soccer quarterfinal match against Brazil at Millennium Stadium at the 2012 London Olympics on Aug. 3, 2012. Japan beat Brazil 2-0 and advanced to the semifinals. (Kyodo)

CARDIFF, Wales - Japan's Shinobu Ono (back, C) scores the team's second goal during the second half of a women's soccer quarterfinal match against Brazil at Millennium Stadium at the 2012 London Olympics on Aug. 3, 2012. Japan beat Brazil 2-0 and advanced to the semifinals. (Kyodo)

LONDON, Britain - Japan's Mika Sugimoto (R) fights Cuba's Idalys Ortiz during the women's judo over 78-kilogram final at the 2012 London Olympics, at the ExCeL competition venue on Aug. 3, 2012. Sugimoto lost to Ortiz. (Kyodo)

Poland's Bartosz Kurek (6, right) finishes off a spike over Britians Ben Pipes (2) and Mark McGivern (7) during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. Looking on is Poland's Marcin Mozdzonek (18, back left). (AP Photo/Chris O'Meara)

Britain's Oluwandamilola Bakare (3) gets a point past Poland's Michal Kubiak (13) during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. (AP Photo/Chris O'Meara)

Poland's Grzegorz Kosok (4) goes up for a block on a spike by Britain's Christopher Lamont (12) during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. (AP Photo/Chris O'Meara)

Poland's Krzysztof Ignaczak (16) sets the ball against Britain during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. (AP Photo/Chris O'Meara)

Poland's Grzegorz Kosok (4) goes up for a block on a spike by Britain's Christpher Lamont (12) during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. (AP Photo/Chris O'Meara)

Russia's Timofey Mozgov, left, jumps for the ball against Spain during their men's preliminary round basketball game at the 2012 Summer Olympics on Saturday, Aug. 4, 2012, in London. (AP Photo/Mark Ralston, Pool)

Poland's, from left, Michal Kubiak, Krzysztof Ignaczak, Grzegorz Kosok, and Lukasz Zygadlo celebrate during their 3-0 win over Britain during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. (AP Photo/Chris O'Meara)

Hungary's Zsofia Kovacs stops to check her rear wheel during the cycling portion of the women's triathlon competition at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Julie Jacobson)

Poland's Zbigniew Bartman (9) smashes the ball at Britain's Oluwandamilola Bakare (3) during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. (AP Photo/Chris O'Meara)

Poland's Michal Kubiak (13) goes for the ball near the sidewall against Britain during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. (AP Photo/Chris O'Meara)

Britain's Daniel Hunter (4) dives for a ball against Poland during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. (AP Photo/Chris O'Meara)

Jamaica's Usain Bolt, left, leads in a men's 100-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/David J. Phillip)

Gavin Woods of Australia, top right, waits for a pass in the final quarter of the game against Croatia during their men's water polo preliminary round match at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Alastair Grant)

Spain's Angel David Rodriguez, right, competes in a men's 100-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/David J. Phillip )

Poland's Tomasz Majewski bites his gold during the ceremony for the men's shot put during athletics competition in the Olympic Stadium at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London.(AP Photo/Daniel Ochoa De Olza)

Britian's Oluwandamilola Bakare (3) celebrates with teammate Mark McGivern (7) after a point against Poland during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. (AP Photo/Chris O'Meara)

Poland's Tomasz Bernard Zielinski puts chalk on his hands before competing during the men's 94-kg, group B, weightlifting competition at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Patrick Semansky)

Zofia Noceti Klepacka of Poland competes during the RS:X women class race at the London 2012 Summer Olympics, Saturday, Aug. 4, 2012, in Weymouth and Portland, England. (AP Photo/Francois Mori)

Poland's Arsen Kasabijew competes during the men's 94-kg weightlifting competition at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Mike Groll)

Poland's Arsen Kasabijew competes during the men's 94-kg weightlifting competition at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Mike Groll)

Poland's Tomasz Bernard Zielinski competes during the men's 94-kg weightlifting competition at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Mike Groll)

Zofia Noceti Klepacka of Poland competes during the RS:X women class race during the race at the London 2012 Summer Olympics, Saturday, Aug. 4, 2012, in Weymouth and Portland, England. (AP Photo/Francois Mori)

Poland's Tomasz Bernard Zielinski reacts to a successful lift during the men's 94-kg weightlifting competition at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Mike Groll)

Poland's Anna Rogowska competes in a women's pole vault qualification round during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/David J. Phillip )

Przemyslaw Miarczynski of Poland competes during the RS:X windsurfer race at the London 2012 Summer Olympics, Saturday, Aug. 4, 2012, in Weymouth and Portland, England. (AP Photo/Francois Mori)

Poland's Sylwia Bogacka prepares to shoot, during the women's 50-meter rifle 3 positions final, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Rebecca Blackwell)

Poland's Sylwia Bogacka prepares to shoot, during the women's 50-meter rifle 3 positions final, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Rebecca Blackwell)

Poland's Agnieszka Nagay prepares to shoot during the women's 50-meter rifle 3 positions final, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Rebecca Blackwell)

Britain's Mo Farah, second right, competes to win gold in the men's 10,000-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Daniel Ochoa De Olza)

United States' players celebrate following a goal made by teammate Claire Laubach during the women's hockey preliminary match against New Zealand at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Bullit Marquez)

Jamaica's Shelly-Ann Fraser-Pryce, left, crosses the finish line to win gold ahead of United States' Carmelita Jeter, third from right, Jamaica's Veronica Campbell-Brown, second from right, Trinidad's Kelly-Ann Baptiste, right, and Ivory Coast's Murielle Ahoure, second from left, in the women's 100-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Matt Dunham)

German players celebrate the goal made by teammate Nina Hasselmann during a women's hockey preliminary match against Argentina at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Bullit Marquez)

Italy's Jessica Rossi shoots during qualifiers for the women's trap event, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. Rossi went on to win gold in the event.(AP Photo/Rebecca Blackwell)

Argentina's guard Carlos Delfino, center, vies for the ball with Nigeria's forward Derrick Obasohan, right, and center Alade Aminu during a men's preliminary round basketball match at the 2012 Summer Olympics, on Saturday, Aug. 4, 2012, in London. (AP Photo/Timothy A. Clary, Pool)

Bahram Muzaffer of Turkey, left, and Ehsan Rouzbahani of Iran, react after their men's light heavyweight boxing competition at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Ivan Sekretarev)

Britain's Luol Deng, left, tries to block the shot of Australia's Patrick Mills during their men's preliminary round basketball match at the 2012 Summer Olympics, on Saturday, Aug. 4, 2012, in London. (AP Photo/Sergio Perez, Pool)

Britain's Drew Sullivan, center, goes in for a basket during their men's preliminary round basketball match against Australia at the 2012 Summer Olympics, on Saturday, Aug. 4, 2012, in London. (AP Photo/Sergio Perez, Pool)

Britain's Mo Farah, right, embraces Wenlock, the games mascot, after winning gold in the men's 10,000-meter during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Matt Dunham)

South Korea's players celebrate their victory against Britain following a men's soccer quarterfinal match at the Millennium Stadium in Cardiff, Wales, at the 2012 London Summer Olympics, Saturday, Aug. 4, 2012. (AP Photo/Lefteris Pitarakis)

Britain's Jessica Ennis, right, celebrates winning gold as she and fellow athletes perform a victory lap following the 800-meter heptathlon during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Martin Meissner)

Jamaica's Shelly-Ann Fraser-Pryce, second from left, crosses the finish line to win gold ahead of United States' Carmelita Jeter, third from right, Jamaica's Veronica Campbell-Brown, second from right, Trinidad's Kelly-Ann Baptiste, right, Ivory Coast's Murielle Ahoure, third from left, and Nigeria's Blessing Okagbare, left, in the women's 100-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Matt Dunham)

Britain's Jessica Ennis, right, crosses the finish line ahead of Canada's Jessica Zelinka, left, and Russia's Tatyana Chernova, center, in the 800-meter heptathlon to win gold during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Anja Niedringhaus)

Jamaica's Shelly-Ann Fraser-Pryce, left, goes to cross the finish line ahead of United States' Carmelita Jeter, second from right, Jamaica's Veronica Campbell-Brown, right, and Nigeria's Blessing Okagbare in the women's 100-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Anja Niedringhaus)

China's Chen Ding celebrates as he crosses the finish line to win the men's 20-kilometer race walk at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Markus Schreiber)

Gold medallist United States' Matthew Grevers, third from bottom, takes the start in the men's 4 X 100-meter medley relay at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Jae C. Hong)

Members of the Serbian water polo team celebrate after defeating the United States in their men's water polo preliminary round match at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Alastair Grant)

Gold medallist China's Sun Yang, center, leads a group of swimmers in the men's 1500-meter freestyle swimming final swims as others still have to turn at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Saturday, Aug. 4, 2012. (AP Photo/Julio Cortez)

China's Song Qingling (22) tries to control the ball during a women's hockey preliminary match against Britain at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. China won 2-1. (AP Photo/Bullit Marquez)

The United States' team competes on their way to clinch the silver medal in the track cycling women's team pursuit event, during the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Christophe Ena)

Athletes compete in the men's 20-kilometer race walk at the 2012 Summer Olympics, in London, Saturday, Aug. 4, 2012. (AP Photo/Sergey Ponomarev)

Germany battles Latvia during a beach volleyball match at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Dave Martin)

Gold medalist Joanna Rowsell of Britain gets ready to start the track cycling women's pursuit team event during the 2012 Summer Olympics in London, Saturday, Aug. 4, 2012. The British women's pursuit track cycling team shattered its own world record for the second time Saturday and beat the United States to win the Olympic gold medal. (AP Photo/Christophe Ena)

Brazil players surround Leandro Damiao, center, as he celebrates scoring the game-winning goal of a quarterfinal men's soccer match against Honduras at the London 2012 Summer Olympics, Saturday, Aug. 4, 2012, at St James Park in Newcastle, England. (AP Photo/Chris Clark)

Athletes compete in the men's 20-kilometer race walk at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Emilio Morenatti)

Athletes compete during the men's 20-kilometer race walk at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Sergey Ponomarev)

Cyclists compete in the track cycling mens omnium event in the velodrome during the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Matt Rourke)

From left, United States' Angelo Taylor, Serbia's Emir Bekric and Puerto Rico's Javier Culson compete in a men's 400-meter hurdles semifinal during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Anja Niedringhaus)

Camille Lecointre and Mathilde Geron of France compete during the 470 women dinghy race at the London 2012 Summer Olympics, Saturday, Aug. 4, 2012, in Weymouth and Portland, England. (AP Photo/Francois Mori)

Netherlands' Ranomi Kromowidjojo, center, touches the wall ahead of Belarus' Aliaksandra Herasimenia, right, and compatriot Marleen Veldhuis, left, to win the women's 50-meter freestyle swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Saturday, Aug. 4, 2012. (AP Photo/Mark J. Terrill)

China's Xu Anqi, left, competes against South Korea's Choi Inje-ong in the gold medal match in women's team epee fencing competition at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Hassan Ammar)

Talita Rocha from Brazil serves a ball during the Beach Volleyball match against Czech Republic at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Petr David Josek)

Athletes compete in the 20-kilometer race walk at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Markus Schreiber)

Marketa Slukova, left, from Czech Republic tries to block Maria Antonelli, right, from Brazil spike a ball during the Beach Volleyball match against CZech Republic at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Petr David Josek)

Britain's Georgi Twigg, right, and China's Lihua Gao vie for the ball during a women's hockey preliminary round match at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Eranga Jayawardena)

Britain players celebrate scoring a goal against China during their women's hockey preliminary round match at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Eranga Jayawardena)

Cyclists compete in the men's omnium 30 kilometers points race, during the 2012 Summer Olympics in London, Saturday, Aug. 4, 2012. (AP Photo/Christophe Ena)

Brazil's Anderson Varejao grabs a rebound over China's Zhang Zhaoxu during a men's basketball game at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Charles Krupa)

Great Britain's Peter Kirkbride reacts after clearing a weight during the men's 94-kg weightlifting competition at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Morry Gash)

South Korea's Cheon Eun-bi, center, and the Netherlands' Eva de Goede, second from left, vie for the ball during a women's hockey preliminary round match at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Eranga Jayawardena)

China's He Wenna performs during the women's trampoline finals at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Julie Jacobson)

Triathlon competitors ride in front of Buckingham Palace during the women's triathlon at the 2012 Summer Olympics on Saturday, Aug. 4, 2012, in London. (AP Photo/Emmanuel Dunand, Pool)

Australia's Igor Yudin (6) gets his spike blocked by Italy's Dragan Travica (13) and Luigi Mastrangelo (1) after taking a pass from teammate Aiden Zingel (1) during a men's volleyball preliminary match at the 2012 Summer Olympics Saturday, Aug. 4, 2012, in London. (AP Photo/Chris O'Meara)

Liliana Fernandez of Spain reacts after losing a point on a long rally during a beach volleyball match against Italy at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Dave Martin)

Great Britain's Katherine Copeland, right, and Sophie Hosking celebrate after winning the gold medal for the lightweight women's rowing double sculls in Eton Dorney, near Windsor, England, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012. (AP Photo/Natacha Pisarenko)

Georgia's Luba Golovina performs during the qualifying round of the women's trampoline at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Gregory Bull)

Britain's Jessica Ennis reacts after taking a throw in the javelin heptathlon during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Lee Jin-man)

Mexico's Diego Reyes jumps for the ball next to Senegal's Cheikhou Kouyate during their men's soccer quarterfinal match at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Matthias Schrader)

Great Britain's Christopher McDermott, center, is tackled by Tunisia's Issam Tej, right, during their men's handball preliminary match at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Vadim Ghirda)

Athletes start in the fifth men's 100-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Matt Slocum)

Spain's Marc Gasol (13) walks off the court after losing to Russia during a preliminary men's basketball game at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/Eric Gay)

Jamaica's Usain Bolt, third from left, prepares to start in a men's 100-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/Martin Meissner)

Denmark's Rasmus Quist and Mads Rasmussen, in boat 5, row on their way to winning the gold medal for the lightweight men's rowing double sculls in Eton Dorney, near Windsor, England, at the 2012 Summer Olympics, Saturday, Aug. 4, 2012. Great Britain's Mark Hunter and Zac Purchase, boat 6, won the silver medal, and New Zealand's Peter Taylor and Storm Uru, in boat 3, won the bronze medal. (AP Photo/Natacha Pisarenko)

Spectators cheer for riders during the women's triathlon at the 2012 Summer Olympics in London on Saturday, Aug. 4, 2012. (AP Photo/Miguel Medina, Pool)

The American Flag was blown off by wind during the medal ceremony of Maria Sharapova of Russia, Serena Williams of the USA and Victoria Azarenka of Belarus after the Women's Singles Final on Centre Court at the Olympic Tennis Venue, Wimbledon, London, at the 2012 Summer Olympics, on Saturday, Aug. 4, 2012. (AP Photo/Mark Allan)

Russia's Darya Pishchalnikova reacts after taking a throw to win silver in the women's discus throw final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 4, 2012. (AP Photo/David J. Phillip )

Russia's Darya Pishchalnikova competes in the women's discus throw during athletics competition in the Olympic Stadium at the 2012 Summer Olympics, Saturday, Aug. 4, 2012, in London. (AP Photo/David J. Phillip )

Japanese badominton duo Mizuki Fujii (front) and Reiko Kakiiw pose before attending the award ceremony of the women's doubles badminton at Wembley Arena on Aug. 4, 2012. The Japanese No. 4 seeded pair earned the silver medal, reaching the nation's first Olympic medal in the event. ( The Yomiuri Shimbun via AP Images )

China's Cai Yun (bottom) and Fu Haifeng (top) play a shot during the semi-final men's doubles badminton match against Malaysia's Koo Kien Keat and Tan Boon Heong of Malaysia at the London 2012 Olympic Games in London on August 4, 2012. AFP PHOTO / ADEK BERRY

Britain's rightback Steven Larsson (L) vies with Tunisia's pivot Issam Tej during the men's preliminary Group A handball match Tunisia vs Great Britain for the London 2012 Olympics Games on August 4, 2012 at the Copper Box hall in London. AFP PHOTO/ JAVIER SORIANO

Britain's suppporters cheer before the athletics event held at the Olympic Stadium during the London 2012 Olympic Games on August 4, 2012 in London. AFP PHOTO / FRANCK FIFE

Iran's Soulmaz Abbasiazad is pictured after competing in the women's single sculls final D of the rowing event during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on August 4, 2012. AFP PHOTO / DAMIEN MEYER

Britain's suppporters cheer before the athletics event held at the Olympic Stadium during the London 2012 Olympic Games on August 4, 2012 in London. AFP PHOTO / FRANCK FIFE

Russia's Elena Isinbaeva looks on before the women's pole vault qualifications at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London. AFP PHOTO / FRANCK FIFE

South Korea's Kim Myungshin (L) and Kim Sol Ji recover after arriving second in the women's lightweight double sculls final C of the rowing event during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on August 4, 2012. AFP PHOTO / DAMIEN MEYER

Madonna Blyth (2nd L) of Australia jumps during a penalty corner shot by South Africa during the women's field hockey preliminary round match between Australia and South Africa at the Riverbank Arena in London on August 4, 2012 during the London 2012 Olympic Games. AFP PHOTO / INDRANIL MUKHERJEE

French guard Yannick Bokolo (R) tries to stop Tunisian forward Mehdi Hafsi from scoring during their London 2012 Olympic Games men's preliminary round group A basketball match in London on August 4, 2012. AFP PHOTO / TIMOTHY A. CLARY

Britain's rightwing Sebastien Edgar shoots during the men's preliminary Group A handball match Tunisia vs Great Britain for the London 2012 Olympics Games on August 4, 2012 at the Copper Box hall in London. AFP PHOTO/ JAVIER SORIANO

French guard Tony Parker controls the ball during his team's London 2012 Olympic Games men's preliminary round group A basketball match against Tunisia in London on August 4, 2012 at the basketball arena in London. AFP PHOTO / MARK RALSTON