AP Photo/David J. Phillip
Jamaica's Usain Bolt, left, crosses the finish line ahead of Ryan Bailey of the United States in the men's 4x100-meter relay final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Aug. 11, 2012. Jamaica set a new world record with a time of 36.84 seconds.
AP Photo/Martin Meissner
The United States' women's 4 X 400-meter relay team from left, Francena McCorory, Allyson Felix, Sanya Richards-Ross and Deedee Trotter celebrate after winning the gold medal during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Aug. 11, 2012.
AP Photo/Luca Bruno
Mexico players celebrate winning the gold medal in the men's soccer final against Brazil at the 2012 Summer Olympics, Aug. 11, 2012, in London.
Photo by Phil Walter/Getty Images
Seimone Augustus #5 and Angel McCaughtry #8 of United States celebrate after defeating France 86-50 to win the gold medal during the Women's Basketball Gold Medal game on Day 15 of the London 2012 Olympic Games at North Greenwich Arena on Aug. 11, 2012, in London, England.
Adam Pretty
David Boudia of the United States competes in the Men's 10m Platform Diving Semifinal on Day 15 of the London 2012 Olympic Games at the Aquatics Centre on Aug. 11, 2012.
Alexander Hassenstein
Ed Mckeever of Great Britain celebrates winning gold in the Men's Kayak Single (K1) 200m Canoe Sprint on Day 15 of the London 2012 Olympic Games at Eton Dorney on Aug. 11, 2012.
Lars Baron
Maryna Konieva of Ukraine (red) competes against Nadin Dawani of Jordan during the Women's +67kg Taekwondo Preliminary Round on Day 15 of the London 2012 Olympic Games at ExCeL on Aug. 11, 2012.
Al Bello
Jose Anotnio Guerra of Cuba competes in the Men's 10m Platform Diving Semifinal on Day 15 of the London 2012 Olympic Games at the Aquatics Centre on Aug. 11, 2012.
Adam Pretty
Matthew Mitcham of Australia competes in the Men's 10m Platform Diving Semifinal on Day 15 of the London 2012 Olympic Games at the Aquatics Centre on Aug. 11, 2012.
Alexander Hassenstein
Ed Mckeever of Great Britain celebrates winning gold in the Men's Kayak Single (K1) 200m Canoe Sprint on Day 15 of the London 2012 Olympic Games at Eton Dorney on Aug. 11, 2012.
Alexander Hassenstein
Gold medal winner Ed Mckeever of Great Britain celebrates on the podium during the medal ceremony for the Men's Kayak Single (K1) 200m Canoe Sprint on Day 15 of the London 2012 Olympic Games at Eton Dorney on Aug. 11, 2012.
Lars Baron
Maryna Konieva of Ukraine (red) competes against Nadin Dawani of Jordan during the Women's +67kg Taekwondo Preliminary Round on Day 15 of the London 2012 Olympic Games at ExCeL on Aug. 11, 2012.
Harry How
Yury Postrigay and Alexander Dyachenko of Russia celebrate winning the gold medal in the Men's Kayak Double (K2) 200m Canoe Sprint on Day 15 of the London 2012 Olympic Games at Eton Dorney on Aug. 11, 2012.
Adam Pretty
German Sanchez Sanchez of Mexico competes in the Men's 10m Platform Diving Semifinal on Day 15 of the London 2012 Olympic Games at the Aquatics Centre on Aug. 11, 2012.
Clive Mason
470 Men's Sailing gold medalist Malcolm Page of Australia poses in front of the Olympic cauldron as it is announced he will be the Australian flag bearer at the closing ceremony, on Day 15 of the London 2012 Olympic Games at the Weymouth & Portland Venue at Weymouth Harbour on Aug. 11, 2012.
Alexander Hassenstein
Yuri Cheban of Ukraine celebrates winning Gold in the Men's Canoe Single (C1) 200m Sprint Final on Day 15 of the London 2012 Olympic Games at Eton Dorney on Aug. 11, 2012.
Clive Rose
Tom Daley of Great Britain competes in the Men's 10m Platform Diving Semifinal on Day 15 of the London 2012 Olympic Games at the Aquatics Centre on Aug. 11, 2012.
Rob Carr/Getty Images
Beatriz Fernandez Ibanez #7 of Spain shoots over Eun Hee Ryu #11 of South Korea during the Women's Handball Bronze Medal Match on Day 15 of the London 2012 Olympics Games at Basketball Arena on Aug. 11, 2012.
Richard Heathcote/Getty Images
Yeon Jae Son competes during the Individual All-Around Rhythmic Gymnastics final on Day 15 of the London 2012 Olympics Games at Wembley Arena on Aug. 11, 2012.
Bryn Lennon/Getty Images
Julie Bresset of France celebrates winning the Women's Cross-country Mountain Bike race on Day 15 of the London 2012 Olympic Games at Hadleigh Farm on Aug. 11, 2012.
Bryn Lennon/Getty Images
Annie Last of Great Britain in action during the Women's Cross-country Mountain Bike race on Day 15 of the London 2012 Olympic Games at Hadleigh Farm on Aug. 11, 2012.
Phil Walter/Getty Images
Eva Lechner of Italy competes in the Women's Cross-country Mountain Bike race on Day 15 of the London 2012 Olympic Games at at Hadleigh Farm on Aug. 11, 2012.
Jamie Squire/Getty Images
Daria Dmitrieva of Russia competes during the Individual All-Around Rhythmic Gymnastics final on Day 15 of the London 2012 Olympics Games at Wembley Arena on Aug. 11, 2012.
Jeff J Mitchell/Getty Images
Mexico players celebrate after winning gold in the Men's Football Final between Brazil and Mexico on Day 15 of the London 2012 Olympic Games at Wembley Stadium on Aug. 11, 2012.
Ronald Martinez/Getty Images
Ganna Rizatdinova of Ukraine competes with the ribbon during the Individual All-Around Rhythmic Gymnastics final on Day 15 of the London 2012 Olympics Games at Wembley Arena on Aug. 11, 2012.
Michael Steele/Getty Images
Mohamed Farah of Great Britain celebrates as he crosses the finish line to win gold ahead of Dejen Gebremeskel of Ethiopia and Thomas Pkemei Longosiwa of Kenya in the Men's 5000m Final on Day 15 of the London 2012 Olympic Games at Olympic Stadium on Aug. 11, 2012.
Mike Hewitt/Getty Images
Usain Bolt of Jamaica celebrates winning gold and setting a new world record of 36.84 during the Men's 4 x 100m Relay Final on Day 15 of the London 2012 Olympic Games at Olympic Stadium on Aug. 11, 2012.
Clive Mason/Getty Images
Tamara Echegoyen Dominguez, Sofia Toro Prieto Puga and Angela Pumariega Menendez of Spain compete against Olivia Price, Nina Curtis and Lucinda Whitty of Australia in the Women's Elliott 6m WMR Sailing on Day 15 of the London 2012 Olympic Games at the Weymouth & Portland Venue at Weymouth Harbour on Aug. 11, 2012.
Clive Brunskill/Getty Images
Georgia Gould of the United States during the Women's Cross-country Mountain Bike race on Day 15 of the London 2012 Olympic Games at at Hadleigh Farm on Aug. 11, 2012.
Streeter Lecka/Getty Images
Usain Bolt of Jamaica crosses the finish line ahead of Ryan Bailey of the United States to win gold and set a new world record of 36.84 during the Men's 4 x 100m Relay Final on Day 15 of the London 2012 Olympic Games at Olympic Stadium on Aug. 11, 2012.
Alexander Hassenstein/Getty Images
Alfonso Benavidez Lopes de Ayala of Spain prepares to compete in the Men's Canoe Single (C1) 200m Sprint Final on Day 15 of the London 2012 Olympic Games at Eton Dorney on Aug. 11, 2012.
Michael Steele
Usain Bolt and Yohan Blake of Jamaica celebrate winning gold and setting a new world record of 36.84 during the Men's 4 x 100m Relay Final on Day 15 of the London 2012 Olympic Games at Olympic Stadium on Aug. 11, 2012.
Hannah Johnston/Getty Images
Xiaobo Liu of China celebrates beating Bahri Tanrikulu of Turkey during the Bronze medal match on Day 15 of the London 2012 Olympic Games at ExCeL on Aug. 11, 2012.
Stu Forster/Getty Images
Mohamed Farah of Great Britain crosses the finish line to win gold ahead of Dejen Gebremeskel of Ethiopia and Thomas Pkemei Longosiwa of Kenya in the Men's 5000m Final on Day 15 of the London 2012 Olympic Games at Olympic Stadium on Aug. 11, 2012.
Streeter Lecka/Getty Images
Athletes walk past the Buckingham Palace and the Queen Victoria Memorial during the Men's 50km Walk on Day 15 of the London 2012 Olympic Games on The Mall on Aug. 11, 2012.
Harry How/Getty Images
Silhouette of race walkers competing in front of Buckingham Palace during the Women's 20km Walk final on Day 15 of the London 2012 Olympic Games on the streets of London on Aug. 11, 2012.
Scott Heavey/Getty Images
Gold medalist Luke Campbell of Great Britain celebrates after the medal ceremony for the Men's Bantam (56kg) Boxing final bout on Day 15 of the London 2012 Olympic Games at ExCeL on Aug. 11, 2012.
Scott Heavey/Getty Images
Oleksandr Usyk of Ukraine celebrates defeating Clemente Russo of Italy to win the Men's Heavy (91kg) Boxing final bout on Day 15 of the London 2012 Olympic Games at ExCeL on Aug. 11, 2012.
Paul Gilham/Getty Images
Roniel Iglesias Solotongo of Cuba celebrates defeating Denys Berinchyk of Ukraine to win the Men's Light Welter (64kg) Boxing final bout on Day 15 of the London 2012 Olympic Games at ExCeL on Aug. 11, 2012.
Al Bello/Getty Images
Tom Daley of Great Britain celebrates finishing third in the Men's 10m Platform Diving Final on Day 15 of the London 2012 Olympic Games at the Aquatics Centre on Aug. 11, 2012.
Clive Rose/Getty Images
Riley McCormick of Canada competes in the Men's 10m Platform Diving Final on Day 15 of the London 2012 Olympic Games at the Aquatics Centre on Aug. 11, 2012.