United States' Allyson Felix, second from right, crosses the finish line to win gold ahead of Jamaica's Shelly-Ann Fraser-Pryce, right, in the women's 200-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Wednesday, Aug. 8, 2012. (AP Photo/Matt Dunham)

Saudi Arabia's Sarah Attar competes in a women's 800-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Wednesday, Aug. 8, 2012. (AP Photo/Daniel Ochoa De Olza)

Saudi Arabia's Sarah Attar trails in a women's 800-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Wednesday, Aug. 8, 2012. Attar is the first Saudi woman to compete in athletics during the Olympics. (AP Photo/Anja Niedringhaus)

United States' Aries Merritt, right, beats teammate Jason Richardson, top and Jamaica's Hansle Parchment to win the men's 110-meter hurdles during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Wednesday, Aug. 8, 2012. (AP Photo/David J. Phillip)

United States' Ashton Eaton, left, and Ukraine's Voleksiy Kasyanov, right, cross the finish line in a men's decathlon 100-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Wednesday, Aug. 8, 2012. (AP Photo/Anja Niedringhaus)

Timo Boll of Germany competes against Leung Chu Yan of Hong Kong in the men's team table tennis bronze medal match at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. (AP Photo/Sergei Grits)

United States' Bernard Lagat rests on compatriot Galen Rupp following their men's 5000-meter heat during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Wednesday, Aug. 8, 2012. (AP Photo/Anja Niedringhaus)

A competitor picks up a shot during the shot put decathlon during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Wednesday, Aug. 8, 2012. (AP Photo/Matt Dunham)

Iceland's Olafur Stefansson covers his face with a towel after his team was defeated by Hungary in their men's handball quarterfinal match at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. (AP Photo/Vadim Ghirda)

Spain's Viran Morros de Argila, right, and France's Jerome Fernandez challenge during their men's handball quarterfinal match at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. (AP Photo/Matthias Schrader)

Brazil's Adriana Araujo reacts as she leaves the ring following a fight against Russia's Sofya Ochigava in a women's semifinal lightweight 60-kg boxing match at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. (AP Photo/Ivan Sekretarev)

Vietnam's Huynh Chau Le fights Chinese Taipei's Chen-Yang Wei (in red) during their match in men's 58-kg taekwondo competition at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. (AP Photo/Ng Han Guan)

In this photo taken with a fisheye lens, Australia coach John Fox, pointing finger at bottom center right, talks to his players before a men's quarterfinal water polo match against Serbia at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. (AP Photo/Julio Cortez)

In this Wednesday, Aug. 8, 2012 photo, taxi driver Richard Meid waits for a fare in front of the British Museum during the 2012 Summer Olympics, in London. (AP Photo/Jae C. Hong)

United States' Donald Suxho dives but cannot reach a ball during a men's quarterfinal volleyball match against Italy at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. (AP Photo/Jeff Roberson)

Laura Smulders, of the Netherlands, competes during the BMX cycling seeding run at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. (AP Photo/Sergey Ponomarev)

Spain's players react after their team lost to France their men's handball quarterfinal match at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. (AP Photo/Vadim Ghirda)

Simon Delestre of France rides his horse Napoli Du Ry in the equestrian individual jumping competition, at the 2012 Summer Olympics, Wednesday, Aug. 8, 2012, in London. (AP Photo/ Dmitry Lovetsky)