South Korea's archer Im Dong-Hyun poses as he brokes his own 72-arrow world record in the archery ranking round with a score of 699 at the Lord's Cricket Ground in London on July 27, 2012 at the London 2012 Olympic Games. AFP PHOTO / TOSHIFUMI KITAMURA

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TOPSHOTS Japan's men's track cycling team are pictured during a training session at the Velodrome venue in Olympic park London, before the London 2012 Olympic games on July 26, 2012. AFP PHOTO/Carl de Souza

Olympics: London, 26.07.2012 Merchandising ? pixathlon fot. Pixathlon/REPORTER

Olympics: London, 26.07.2012 Olympic Village, Germany, German ? pixathlon fot. Pixathlon/REPORTER

Caroline Wozniacki of Denmark and her boyfriend and golfer Rory McIlroy arrive at the Olympic Village ahead of the London 2012 Olympic Games at the Olympic Park on July 26, 2012 in London. AFP PHOTO / POOL / ALEXANDER HASSENSTEIN

Caroline Wozniacki of Denmark and her boyfriend and golfer Rory McIlroy arrive during the Olympic Village arrivals ahead of the London 2012 Olympic Games at the Olympic Park on July 26, 2012 in London. AFP PHOTO / POOL / ALEXANDER HASSENSTEIN

Caroline Wozniacki of Denmark displays her fingernails decorated with her national flag as she arrives during the Olympic Village arrivals ahead of the London 2012 Olympic Games at the Olympic Park on July 26, 2012 in London. AFP PHOTO / POOL / ALEXANDER HASSENSTEIN

Caroline Wozniacki of Denmark speaks to the press as she arrives at the Olympic Village ahead of the London 2012 Olympic Games at the Olympic Park on July 26, 2012 in London. AFP PHOTO / POOL / ALEXANDER HASSENSTEIN

Marzenna Koszewska (L), Chef de Mission of Poland is welcomed in the Olympic Village ahead of the London 2012 Olympic Games at the Olympic Park on July 26, 2012 in London, England. AFP PHOTO / POOL / ALEXANDER HASSENSTEIN

Table tennis player Sarah Hanffou Nana of Cameroon visits the hairdresser salon at the Olympic village ahead of the London 2012 Olympic Games at the Olympic Park on July 26, 2012 in London, England. AFP PHOTO / POOL / ALEXANDER HASSENSTEIN

A logo of the London 2012 Olympic Games is seen on a marking buoy at Hyde Park venue on July 25, 2012 in Central London. The open water competition will be held on August 9-10 in The Serpentine in London's Hyde Park. AFP PHOTO / FABRICE COFFRINI

The Olympic basketball arena in the Olympic Park in London on Wednesday, 25th July, 2012. LEHTIKUVA / Heikki Saukkomaa *** FINLAND OUT. NO THIRD PARTY SALES. ***

The Olympic basketball arena in the Olympic Park in London on Wednesday, 25th July, 2012. LEHTIKUVA / Heikki Saukkomaa *** FINLAND OUT. NO THIRD PARTY SALES. ***

The Aquatics Centre (Olympic swimming and diving) in the Olympic Park in London on Wednesday, 25th July, 2012. The preparations were under way on Wednesday, the competition kicks off on Saturday. LEHTIKUVA / Timo Jaakonaho *** FINLAND OUT. NO THIRD PARTY SALES. ***

A canal in the Olympic Park in London on Wednesday, 25th July, 2012. LEHTIKUVA / Timo Jaakonaho *** FINLAND OUT. NO THIRD PARTY SALES. ***

The Olympic rings outside the Aquatics Centre (Olympic swimming and diving) in the Olympic Park in London on Wednesday, 25th July, 2012. LEHTIKUVA / Timo Jaakonaho *** FINLAND OUT. NO THIRD PARTY SALES. ***

The Olympic Stadium in the Olympic Park in London on Wednesday, 25th July, 2012. LEHTIKUVA / Timo Jaakonaho *** FINLAND OUT. NO THIRD PARTY SALES. ***

The Olympic Stadium and a No Photography sign in the Olympic Park in London on Wednesday, 25th July, 2012. LEHTIKUVA / Timo Jaakonaho *** FINLAND OUT. NO THIRD PARTY SALES. ***