Canada's Custio Clayton (R) lands a punch as he fights against Mexico's Oscar Molina Casillas in the men's welter (69kg) Round of 32 boxing match at ExCeL venue during the London 2012 Olympic Games July 29, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: SPORT BOXING OLYMPICS)
Japan's Reika Kakiiwa (R) and Mizuki Fujii (bottom L) play against Singapore's Shinta Mulia Sari (top R) and Yeo Lee during their women's doubles badminton match at the London 2012 Olympic Game in London on July 29, 2012. Kakiiwa and Fujii won the match 16-21, 21-10, 21-19. AFP PHOTO / ADRIAN DENNIS
Argentina's Luciano De Cecco (L) spikes as Australia's Aidan Zingel (R) and Igor Yudin attempt to block during the men's volleyball match between Australia and Argentina of the 2012 London Olympic Games in London on July 29, 2012. AFP PHOTO/KIRILL KUDRYAVTSEV