London Olympic Games
Jamaica's Usain Bolt reacts after winning the men's 100 meters race, August 5, 2012.
Ethiopia's gold medal winner Tiki Gelana, right, Kenya's silver medal winner Priscah Jeptoo, left, and Russia's bronze medalist Tatyana Petrova Arkhipova during the ceremony for the women's marathon at 2012 Summer Olympics, August 5, 2012.
Britain's Andy Murray celebrates after defeating Switzerland's Roger Federer to win the men's singles gold medal match at the All England Lawn Tennis Club at Wimbledon, in London, at the 2012 Summer Olympics, Aug. 5, 2012.
US Serena Williams (L) and Venus Williams celebrate on the podium after receiving their gold medal for winning the London 2012 Olympic Games women's doubles tennis tournament, August 5, 2012.
China's gymnast Zou Kai celebrates with his national flag after winning the men's floor exercise final of the artistic gymnastics event of the London Olympic Games on August 5, 2012
Gold medallist Britain's Greg Rutherford bites his medal during the men's long jump victory ceremony at the London 2012 Olympic Games at the Olympic Stadium, August 5, 2012.
Sanya Richards-Ross of the U.S. celebrates after winning gold in the women's 400m final during the London 2012 Olympic Games at the Olympic Stadium August 5, 2012.
Ben Ainslie of Great Britain, right, winner of the gold medal, shakes hands with silver medallist Jonas Hogh-Christensen of Denmark after the Finn class sailing competition at the London 2012 Summer Olympics, August 5, 2012.
The entire Chinese badminton team, with gold medal winners in front row, pose for a photo at the end of the competition at the 2012 Summer Olympics in London, August 5, 2012.
Gold medal winner, South Korea's Jin Jong-oh, right, celebrates with countryman Choi Young-rae, who took silver, during the victory ceremony for the men's 50-meter pistol, at the 2012 Summer Olympics, in London, August 5, 2012.