Australia's Alana Boyd clears the bar in the women's pole vault final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Monday, Aug. 6, 2012. (AP Photo/David J. Phillip)

Rodrigo Pessoa, of Brazil, rides his horse Rebozo, during the equestrian show jumping competition at the 2012 Summer Olympics, Monday, Aug. 6, 2012, in London. (AP Photo/David Goldman)

Brazilian gymnast Arthur Nabarrete Zanetti performs on the rings during the artistic gymnastics men's apparatus finals at the 2012 Summer Olympics, Monday, Aug. 6, 2012, in London. (AP Photo/Gregory Bull)

Keitani Graham of Micronesia competes against Charles Edward Betts of the United States, right, during the 84-kg Greco-Roman wrestling competition at the 2012 Summer Olympics, Monday, Aug. 6, 2012, in London. (AP Photo/Paul Sancya)

China's Liu Xiangrong takes a thrown a women's shot put qualification round during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Monday, Aug. 6, 2012. (AP Photo/Matt Dunham)

Spectators watch the morning session as the Olympic flame burns in the foreground during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Monday, Aug. 6, 2012. (AP Photo/Lee Jin-man)

Switzerland's Marcel Buerge prepares to shoot, during qualifiers for the men's 50-meter rifle 3 positions, at the 2012 Summer Olympics, Monday, Aug. 6, 2012, in London. (AP Photo/Rebecca Blackwell)

Bronze medallist Italy's Matteo Morandi performs on the rings during the artistic gymnastics men's apparatus finals at the 2012 Summer Olympics, Monday, Aug. 6, 2012, in London. (AP Photo/Gregory Bull)

Natalia Ischenko and Svetlana Romanshina of Russia compete during women's duet synchronized swimming preliminary round at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Monday, Aug. 6, 2012. (AP Photo/Mark J. Terrill)

Athletes line up for a women's 100-meter hurdles heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Monday, Aug. 6, 2012. (AP Photo/Daniel Ochoa De Olza)

Australia's Tom Slingsby celebrates after winning the gold medal of the laser class sailing competition at the London 2012 Summer Olympics, Monday, Aug. 6, 2012, in Weymouth and Portland, England. (AP Photo/Bernat Armangue)

Britain men's water polo players react to a goal by Glen Robinson during a preliminary men's water polo match against Montenegro at the 2012 Summer Olympics, Monday, Aug. 6, 2012, in London. Hungary won 11-6. (AP Photo/Julio Cortez)

China's Zhang Jike eyes the ball during a match against Germany's Timo Boll in a men's team table tennis semifinal at the 2012 Summer Olympics, Monday, Aug. 6, 2012, in London. (AP Photo/Sergei Grits)

Britain's Jason Kenny celebrates after clinching the gold medal in the track cycling men's sprint event, during the 2012 Summer Olympics in London, Monday, Aug. 6, 2012. (AP Photo/Matt Rourke)

British supporters react as they watch a broadcast of the woman's 1500-meter semifinals on a screen at Hyde Park in London during 2012 Summer Olympics, Monday, Aug. 6, 2012, in London. (AP Photo/Emilio Morenatti)