France's Kevin Mayer competes in the men's decathlon javelin throw at the athletics event during the London 2012 Olympic Games on August 9, 2012 in London. AFP PHOTO / ADRIAN DENNIS
The Netherland's Twan van Gendt, left, Latvia's Maris Strombergs, Colombia's Carlos Mario Oquendo Zabala and Ausralia's Sam Willoughby compete during the men's BMX cycling heats at the London 2012 Olympic Games, in London on August 9, 2012. AFP PHOTO / CARL DE SOUZA
South Korea's rightback Choi Im Jeong (2ndL) vies with Norwegian players during the women's semi-final handball match Norway vs South Korea for the London 2012 Olympics Games on August 9, 2012 at the Basketball Arena in London. AFP PHOTO/ CHRISTOPHE SIMON
Colombia's Jackeline Renteria Castillo celebrates with her coach after defeating Ukraine's Tetyana Lazareva in their Women's 55kg Freestyle bronze medal match on August 9, 2012 during the wrestling event of the London 2012 Olympic Games. AFP PHOTO / YURI CORTEZ
Norway's players celebrate at the end of the women's semi-final handball match Norway vs South Korea for the London 2012 Olympics Games on August 9, 2012 at the Basketball Arena in London. Norway won 31-25. AFP PHOTO / CHRISTOPHE SIMON
Australia's Marc Willers (R), Switzerland's Roger Rinderknecht (C, #13), Joris Daudet (Upper #2) of France, Nicholas Long of the US (L,#64) and compatriot David Herman (lower, 2nd L, #5) compete during the men's BMX cycling heat at the London 2012 Olympic Games, in London on August 9, 2012. AFP PHOTO / CARL DE SOUZA
Norway's leftback Ida Alstad celebrates during the women's semi-final handball match Norway vs South Korea for the London 2012 Olympics Games on August 9, 2012 at the Basketball Arena in London. AFP PHOTO / JAVIER SORIANO
TOPSHOTS China's Luo Xi, China's Sun Wenyan, China's Wu Yiwen, China's Liu Oi, China's Jiang Wenwen, China's Chang Si, China's Huang Xuechen and China's Jiang Tingting compete in the team technical routine during the synchronised swimming competition at the London 2012 Olympic Games on August 9, 2012 in London. AFP PHOTO / MARTIN BUREAU
Hungary's Barbara Bujka (L) battles Australia's Bronwen Knox for the ball during their Women's Bronze Medal water polo match during the London 2012 Olympic Games August 9, 2012. REUTERS/Laszlo Balogh
Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem
Colombia's Jackeline Renteria Castillo celebrates after defeating Ukraine's Tetyana Lazareva for the bronze medal of the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Damir Sagolj
Trey Hardee of the U.S. celebrates after the men's decathlon javelin throw event at the London 2012 Olympic Games at the Olympic Stadium August 9, 2012. REUTERS/Mark Blinch
Iran's Mohammad Bagheri Motamed (L) fights against Brazil's Diogo Silva during their men's -68kg semifinal taekwondo match at the ExCel venue during the London Olympic Games, August 9, 2012. REUTERS/Kim Kyung-Hoon
Norway's Goril Snorroeggen (L) shoots on goal past South Korea's Choi Im Jeong (C) watched by Ida Alstad during their women's semi-final match against South Korea at the Basketball Arena during the London 2012 Olympic Games August 9, 2012. REUTERS/Marko Djurica
Sweden's Jenny Fransson (R) wrestles Ali Sue Bernard of the US to win their Women's 72kg Freestyle qualifications match on August 9, 2012 during the wrestling event of the London 2012 Olympic Games. AFP PHOTO / MARWAN NAAMANI
Cancan Ren of China (in red) defends against Nicola Adams of Great Britain (in blue) during the women's boxing Flyweight final of the 2012 London Olympic Games at the ExCel Arena August 9, 2012 in London. Nicola Adams defeated Cancan Ren to win gold. AFP PHOTO / Jack GUEZ
Serbia's Damir Fejzic (blue) fights against Great Britain's Martin Stamper during their men's taekwondo quarter-final bout in the under 68 kg category as part of the London 2012 Olympic games, on August 9, 2012 at the ExCel centre in London. AFP PHOTO / TOSHIFUMI KITAMURA
Jordan Larson of the US attempts to set during the Women's semifinal volleyball match between South Korea and the US in the 2012 London Olympic Games in London on August 9, 2012. AFP PHOTO/KIRILL KUDRYAVTSEV
Swimmers compete in the women's 10km open water swimming marathon at the London 2012 Olympic Games on August 9, 2012 in London. AFP PHOTO / MARTIN BERNETTI
France's Marlene Harnois fights against Cuba's Glenhis Hernandez (blue) fights against Cuba's Glenhis Hernandez during their women's taekwondo bout in the under 57 kg category as part of the London 2012 Olympic games, on August 9, 2012 at the ExCel centre in London. AFP PHOTO / TOSHIFUMI KITAMURA
China's Luo Xi, China's Sun Wenyan, China's Wu Yiwen, China's Liu Oi, China's Jiang Wenwen, China's Chang Si, China's Huang Xuechen and China's Jiang Tingting compete in the team technical routine during the synchronised swimming competition at the London 2012 Olympic Games on August 9, 2012 in London. AFP PHOTO / FRANCOIS XAVIER MARIT
Fans surround Jamaica's Usain Bolt after he won the men's 200m final at the London 2012 Olympic Games at the Olympic Stadium August 9, 2012. REUTERS/Phil Noble
Jamaica's Usain Bolt reacts as he crosses the finish line to win the men's 200m final during the London 2012 Olympic Games at the Olympic Stadium August 9, 2012. REUTERS/Stefan Wermuth
Jamaica's Usain Bolt celebrates winning the men's 200m final during the London 2012 Olympic Games at the Olympic Stadium August 9, 2012. REUTERS/David Gray
Ireland's Katie Taylor (R) fights Tajikistan's Mavzuna Chorieva during their Women's Light (60kg) semi-final boxing match at the London Olympic Games in this August 8, 2012 file photo. Taylor struck a blow for herself, her country and her sport with victory in the women's lightweight boxing final at the London Olympics on August 9. Women's boxing, a demonstration sport as far back as the 1904 St Louis Games, finally made its Olympic debut in London. Women's boxing, a demonstration sport as far back as the 1904 St Louis Games, finally made its Olympic debut in London. Picture taken August 8, 2012. REUTERS/Damir Sagolj/Files
Australia's Jennifer Screen grimaces with a black-eye she got while playing against the U.S. during their women's basketball semifinal match at the North Greenwich Arena during the London 2012 Olympic Games August 9, 2012. REUTERS/Mike Segar
Norway's Marit Malm Frafjord cheers with her team during their women's semi-final match against South Korea at the Basketball Arena during the London 2012 Olympic Games August 9, 2012. REUTERS/Marko Djurica
Cameroon's Annabel Laure Ali (in red) fights with Bulgaria's Stanka Zlateva Hristova on the Women's 72Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Grigory Dukor
Athletes compete in their men's BMX quarter-final run during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 9, 2012. REUTERS/Paul Hanna
Russia's Evgeniya Kanaeva competes using the ball in her individual all-around gymnastics qualification match at the Wembley Arena during the London 2012 Olympic Games August 9, 2012. REUTERS/Mike Blake
Belarus's Melitina Staniouta competes using the ball in her individual all-around gymnastics qualification match at Wembley Arena during the London 2012 Olympic Games August 9, 2012. REUTERS/Brian Snyder
France's Kevin Mayer competes in the men's decathlon discus throw event at the London 2012 Olympic Games at the Olympic Stadium August 9, 2012. REUTERS/Pawel Kopczynski
Germany's Christin Steuer performs a dive during the women's 10m platform semi-final at the London 2012 Olympic Games at the Aquatics Centre August 9, 2012. REUTERS/Toby Melville