Team Germany poses with their gold medals after winning the men's eight Final A at Eton Dorney during the London 2012 Olympic Games August 1, 2012 [Photo/Agencies]

China's Jiao Liuyang poses with her gold medal during the women's 200m butterfly victory ceremony at the London 2012 Olympic Games at the Aquatics Center August 1, 2012.[Photo/Xinhua]

Britain's Helen Glover and Heather Stanning stand with their gold medals after the women's pair Final A at Eton Dorney during the London 2012 Olympic Games August 1, 2012. New Zealand's bronze medalist Juliette Haigh is at right. [Photo/Agencies]

Gold medallists (L to R) Kateryna Tarasenko, Yana Dementieva, Anastasiia Kozhenkova and Nataliya Dovgodko of Ukraine pose during the victory ceremony after the women's quadruple sculls Final A at Eton Dorney during the London 2012 Olympic Games August 1, 2012. [Photo/Agencies]

Britain's gold medallists Helen Glover and Heather Stanning (4th L) stand during the victory ceremony after the women's pair Final A at Eton Dorney during the London 2012 Olympic Games August 1, 2012. New Zealand's bronze medallists Juliette Haigh and Rebecca Scown (R) are at right, while Australia's silver medallists Kate Hornsey (L) and Sarah Tait are on the left. [Photo/Agencies]

Gold medallist Kristin Armstrong of the US celebrates with her 22-month-old son Lucas William Savola on the podium during the victory ceremony of the women's cycling individual time trial at the London 2012 Olympic Games August 1, 2012. [Photo/Agencies]

Italy's Daniele Molmenti stands with his gold medal during the victory ceremony for the men's kayak (K1) finals at Lee Valley White Water Center during the London 2012 Olympic Games August 1, 2012. [Photo/Agencies]

China's Li Xiaoxia reacts after she was presented with her gold medal at the women's singles table tennis tournament finals at the ExCel venue during the London 2012 Olympic Games August 1, 2012. [Photo/Agencies]

China's Luo Yutong and Qin Kai (L) bite their gold medals after winning the men's synchronised 3m springboard final at the London 2012 Olympic Games at the Aquatics Center August 1, 2012. [Photo/Agencies]

Gold medallist Britain's Bradley Wiggins celebrates on the podium during the victory ceremony for the men's cycling individual time trial at the London 2012 Olympic Games at Hampton Court Palace August 1, 2012. [Photo/Agencies]

Gold medallist France's Lucie Decosse celebrates with her medal after the awards ceremony for the women's -70kg judo competition at the London 2012 Olympic Games August 1, 2012. [Photo/Agencies]

Gold medallist South Korea's Song Dae-Nam kisses his medal as he celebrates during the awards ceremony for the men's -90kg judo competition at the London 2012 Olympic Games August 1, 2012. [Photo/Agencies]

Kohei Uchimura of Japan celebrates winning a gold medal during the men's individual all-around gymnastics final in the North Greenwich Arena during the London 2012 Olympic Games August 1, 2012. [Photo/Agencies]

Venezuela's gold medallist Ruben Limardo Gascon celebrates during the men's epee individual fencing competition victory ceremony at the ExCel venue during the London 2012 Olympic Games August 1, 2012. [Photo/Agencies]

(L-R) Norway's Bastosz Piasecki, Venezuela's Ruben Limardo Gascon and South Korea's Jinsun Jung pose with their silver, gold and bronze medals respectively during the men's epee individual fencing competition victory ceremony at the ExCel venue during the London 2012 Olympic Games August 1, 2012. [Photo/Agencies]

South Korea's Jiyeon Kim celebrates with her gold medal during the women's sabre individual fencing competition victory ceremony at the ExCel venue during the London 2012 Olympic Games August 1, 2012. [Photo/Agencies]

Hungary's Daniel Gyurta poses with his gold medal on the podium after winning the men's 200m breaststroke final with a world record during the London 2012 Olympic Games at the Aquatics Center August 1, 2012. [Photo/Agencies]

China's Lu Xiaojun bites his gold medal at the podium of the men's 77Kg weightlifting competition at the ExCel venue at the London 2012 Olympic Games August 1, 2012. [Photo/Agencies]

Nathan Adrian of the US holds his gold medal during the men's 100m freestyle victory ceremony at the London 2012 Olympic Games at the Aquatics Center August 1, 2012. [Photo/Agencies]

Allison Schmitt (L), Shannon Vreeland (2nd L), Dana Vollmer and Missy Franklin (R) of the US hold their gold medals after winning the women's 4x200m freestyle relay final at the London 2012 Olympic Games at the Aquatics Center August 1, 2012. [Photo/Agencies]