Woojin Hwang, of Korea, lays on the ground after getting bucked off his horse Shearwater Oscar, in the equestrian show jumping stage of the men's modern pentathlon at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/David Goldman)

Woojin Hwang, of Korea, looks up after completing the equestrian show jumping stage of the men's modern pentathlon on his horse Shearwater Oscar, at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/David Goldman)

Hwang Woojin, of South Korea, and his horse Shearwater Oscar, fall down after the horse bucked after the starting bell sounded to start their run in the equestrian show jumping stage of the men's modern pentathlon at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London.(AP Photo/Markus Schreiber)

Hwang Woojin, of South Korea, and his horse Shearwater Oscar, fall down after the horse bucked after the starting bell sounded to start their run in the equestrian show jumping stage of the men's modern pentathlon at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London.(AP Photo/Markus Schreiber)

Agnese Pastare of Latvia competes in the 20-kilometer women's race walk at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/Dmitry Lovetsky)

Athletes compete in the women's 20-kilometer race walk, at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/Lefteris Pitarakis)

Athletes compete in the women's 20-kilometer race walk at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/ Dmitry Lovetsky)

Neringa Aidietyte of Lithuania competes in the 20-kilometer women's race walk at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/Dmitry Lovetsky)

Kenya's Julius Yego takes a throw in the men's javelin throw final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/David J. Phillip)

Trinidad's Keshorn Walcott takes a throw in the men's javelin throw final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/David J. Phillip)

Czech Republic's Vitezslav Vesely takes a throw in the men's javelin throw final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/David J. Phillip)

Czech Republic's Vitezslav Vesely takes a throw in the men's javelin throw final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/David J. Phillip)

Japan's Roderick Genki Dean takes a throw in the men's javelin throw final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/David J. Phillip )

Yogeshwar Dutt of India celebrates after beating Ri Jong Myong of North Korea for the bronze medal during the men's 60-kg freestyle wrestling competition at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/Paul Sancya)

Mexico's Hector Herrera (6) and Mexico's Oribe Peralta (9) celebrate winning the gold medal with teammates in the men's soccer final against Brazil at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/Luca Bruno)

Steffan Kollner, right, of Germany, and Amro El Geziry, 2. from right, compete in the combined running and shooting stage of the men's modern pentathlon, at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/Markus Schreiber)

Cuba's Glenhis Hernandez reacts during her match against Mexico's Maria del Rosario Espinoza in their bronze medal match in women's plus 67-kg taekwondo competition at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/Ng Han Guan)

Luke Campbell of Great Britain, celebrates winning his fight against John Joe Nevin of Ireland, after their bantamweight 56-kg gold medal boxing match at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/Ivan Sekretarev)

Luke Campbell of Great Britain, celebrates winning his fight against John Joe Nevin of Ireland, after their bantamweight 56-kg gold medal boxing match at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/Patrick Semansky)

David Svoboda, of the Czech Republic, right, and Cao Zhongrong, of China, take aim during the combination running and shooting stage of the men's modern pentathlon at the 2012 Summer Olympics, Saturday, Aug. 11, 2012, in London. (AP Photo/David Goldman)

Britain's Mohamed Farah, right, is congratulated by United States' Galen Rupp after his win in the men's 5000-meter final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Saturday, Aug. 11, 2012. (AP Photo/Anja Niedringhaus)

The USA's Sanya Richards-Ross celebrates as she crosses the finish line to win gold in the Women's 4 x 400m Relay Finalat the Olympic Games at the Olympic Stadium at the 2012 Summer Olympics at the Olympic Stadium, London, on Saturday, Aug. 11, 2012. (AP Photo/Mark Allan)

Russia's Yulia Gushchina,Tatyana Firova Natalya Antyukh, and Antonina Krivoshapka celebrate winning silver in the Women's 4 x 400m Relay Final at the Olympic Games at the Olympic Stadium at the 2012 Summer Olympics at the Olympic Stadium, London, on Saturday, Aug. 11, 2012. (AP Photo/Mark Allan)

Jamaica's Bronze medalists, Rosemarie Whyte, Shericka Williams, Christine Day and Novlene Williams-Mills in the Women's 4 x 400m Relay Final at the Olympic Games at the Olympic Stadium at the 2012 Summer Olympics at the Olympic Stadium, London, on Saturday, Aug. 11, 2012. (AP Photo/Mark Allan)

Jamaica's Bronze medalists, Shericka Williams, Rosemarie Whyte, Christine Day and Novlene Williams-Mills in the Women's 4 x 400m Relay Final at the Olympic Games at the Olympic Stadium at the 2012 Summer Olympics at the Olympic Stadium, London, on Saturday, Aug. 11, 2012. (AP Photo/Mark Allan)

South Africa's Caster Semenya celebrates after winning Silver in the Women's 800m Final af at the Olympic Games at the Olympic Stadium at the 2012 Summer Olympics at the Olympic Stadium, London, on Saturday, Aug. 11, 2012. (AP Photo/Mark Allan)

Teammates pat on the back of Bronze medalist Thomas Daley from Great Britain during the men's 10-meter platform diving final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Saturday, Aug. 11, 2012. (AP Photo/Michael Sohn)

The USA's Francena McCorory, Allyson Felix, Sanya Richards-Ross and DeeDee Trotter celebrate after they win gold in the Women's 4 x 400m Relay Final at the Olympic Games at the Olympic Stadium at the 2012 Summer Olympics at the Olympic Stadium, London, on Saturday, Aug. 11, 2012. (AP Photo/Mark Allan)

Great Britain's Ed Mckeever celebrates after winning the gold medal in the kayak single (K1) 200m men's final A during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on August 11, 2012. AFP PHOTO / DAMIEN MEYER

Great Britain's Ed Mckeever celebrates after winning the gold medal in the kayak single (K1) 200m men's final A during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on August 11, 2012. AFP PHOTO / DAMIEN MEYER

Great Britain's Ed Mckeever (L) celebrates after winning the gold medal in the kayak single (K1) 200m men's final A during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on August 11, 2012. AFP PHOTO / JACK GUEZ

Great Britain's Ed Mckeever (R) celebrates after winning the gold medal in the kayak single (K1) 200m men's final A, while Spain's Saul Craviotto (R) took silver, during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on August 11, 2012. AFP PHOTO / JACK GUEZ

Ukraine's Iurii Cheban celebrates after winning the gold medal in the canoe single (C1) 200m men's final A during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on August 11, 2012. AFP PHOTO / JACK GUEZ

Ukraine's Iurii Cheban competes in the canoe single (C1) 200m men's final A during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on August 11, 2012. AFP PHOTO / JACK GUEZ

South Korea's Jung Jinhwa (L) competes against US Dennis Bowsher (R) during the fencing epee on touch part of the Modern Pentathlon at the London 2012 Olympic Games in London on August 11, 2012. AFP PHOTO / ADEK BERRY

Russia's Yury Postrigay (R) and Alexander Dyachenko celebrate after winning the gold medal in the kayak double (K2) 200m men's final A during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on August 11, 2012. AFP PHOTO / DAMIEN MEYER

Italy's Carlo Molfetta (blue) fights against Tajikistan's Alisher Gulov during their men's taekwondo bout in the + 80 kg category as part of the London 2012 Olympic games, on August 11, 2012 at the ExCel centre in London. AFP PHOTO / TOSHIFUMI KITAMURA

Russia's Yury Postrigay and Alexander Dyachenko celebrate after the men's kayak double (K2) 200m event at Eton Dorney during the London 2012 Olympic Games on August 11, 2012. AFP PHOTO / POOL - PHILIP BROWN

Russia's Yury Postrigay and Alexander Dyachenko celebrate after the men's kayak double (K2) 200m event at Eton Dorney during the London 2012 Olympic Games on August 11, 2012. AFP PHOTO / POOL - PHILIP BROWN

Cuba's Jeinkler Aguirre competes in the men's 10m platform semi-finals during the diving event at the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / FABRICE COFFRINI

Mexico's Maria Del Rosario Espinoza Espinoza (red) fights against Cambodia's Davin Sorn during their women's taekwondo bout in the + 67 kg category as part of the London 2012 Olympic games, on August 11, 2012 at the ExCel centre in London. AFP PHOTO / TOSHIFUMI KITAMURA

Great Britain's Liam Heath (R) and Jon Schofield compete in the kayak double (K2) 200m men's final A during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on August 11, 2012. AFP PHOTO / DAMIEN MEYER

Bulgaria's Anatolie Ilarionovitch Guidea (R) wrestles India's Yogeshwar Dutt in their Men's 60kg Freestyle qualification match on August 11, 2012 during the wrestling event of the London 2012 Olympic Games. AFP PHOTO / MARWAN NAAMANI

Competitors pass Buckingham Palace during the London 2012 Olympic Games Men's 50km gold medal race walk in central London on August 11, 2012. (FromR) Russia's Igor Erokhin, France's Yohann Diniz and Russia's Sergey Bakulin. AFP PHOTO / CARL COURT

New Zealand's Quentin Rew is helped in a wheelchair after collapsing at the end of the London 2012 Olympic Games Men's 50km race walk in central London on August 11, 2012. AFP PHOTO / CARL COURT

Russia's Sergey Kirdyapkin competes during the men's 50km race walk at the London 2012 Olympic Games in London on August 11, 2012. AFP PHOTO / MARTIN BUREAU

Russia's Sergey Kirdyapkin (R) leads the pack as they walk past Buckingham Palace during the men's 50km race walk at the London 2012 Olympic Games in London on August 11, 2012 AFP PHOTO / MARTIN BUREAU

Russia's Sergey Kirdyapkin competes during the men's 50km race walk at the London 2012 Olympic Games in London on August 11, 2012. Kirdyapkin won the Gold with a time of 3:35:59. AFP PHOTO / CARL COURT

South Korea's Chilsung is helped in a wheelchair after collapsing at the end of the London 2012 Olympic Games Men's 50km race walk in central London on August 11, 2012. AFP PHOTO / CARL COURT

Azerbajian's Aliya Garayeva performs her hoop program during the individual all-around final of the rythmic gymnastics event of the London Olympic Games on August 11, 2012 at Wembley arena in London. AFP PHOTO / THOMAS COEX

Russia's Sergey Kirdyapkin reacts after winning the men's 50km race walk at the London 2012 Olympic Games in London on August 11, 2012 AFP PHOTO / MARTIN BUREAU

Ukraine's Alina Maksymenko performs her hoop program during the individual all-around final of the rythmic gymnastics event of the London Olympic Games on August 11, 2012 at Wembley arena in London. AFP PHOTO / THOMAS COEX

China's Si Tianfeng celebrates after the men's 50km race walk at the London 2012 Olympic Games in London on August 11, 2012 AFP PHOTO / MARTIN BUREAU

South Korea's Son Yeon Jae performs her hoop program during the individual all-around final of the rythmic gymnastics event of the London Olympic Games on August 11, 2012 at Wembley arena in London. AFP PHOTO / THOMAS COEX

Belarus' Liubou Charkashyna performs her hoop program during the individual all-around final of the rythmic gymnastics event of the London Olympic Games on August 11, 2012 at Wembley arena in London. AFP PHOTO / BEN STANSALL

Competitros walk past Buckingham Palace as they compete in the men's 50km race walk at the London 2012 Olympic Games in London on August 11, 2012. AFP PHOTO / MARTIN BUREAU

France's Yohann Diniz (C), Guatemala's Erick Barrondo (C) and Russia's Sergey Bakulin compete in the men's 50km race walk at the London 2012 Olympic Games in London on August 11, 2012. AFP PHOTO / MARTIN BUREAU

Poland's Joanna Mitrosz performs her hoop program during the individual all-around final of the rythmic gymnastics event of the London Olympic Games on August 11, 2012 at Wembley arena in London. AFP PHOTO / BEN STANSALL

US' Tervel Ivaylov Dlagnev (L) wrestles Belarus' Aleksei Shemarov in their Men's 120kg Freestyle quarterfinal match on August 11, 2012 during the wrestling event of the London 2012 Olympic Games. AFP PHOTO / MARWAN NAAMANI

A Brazil's supporter waits for the start of the men's football final match between Brazil and Mexico at the Millenium stadium in Cardiff during the London Olympic Games on August 11, 2012. AFP PHOTO / DANIEL GARCIA

Amro El Geziry of Egypt (R) reacts next to Nicholas Woodbridge (L) of Great Britain after competing in the swimming 200m freestyle part of the Modern Pentathlon at the London 2012 Olympic Games in London on August 11, 2012. AFP PHOTO / ADEK BERRY

Poland's Joanna Mitrosz performs her clubs program during the individual all-around final of the rythmic gymnastics event of the London Olympic Games on August 11, 2012 at Wembley arena in London. AFP PHOTO / BEN STANSALL

France's Julie Bresset celebrates as she wins the women's cycling cross-country mountain bike race of the London 2012 Olympic Games on August 11, 2012 at Hadleigh Farm in Benfleet. AFP PHOTO / CARL DE SOUZA

France's Julie Bresset celebrates as she crosses the finish line and win the women's cycling cross-country mountain bike race of the London 2012 Olympic Games on August 11, 2012 at Hadleigh Farm in Benfleet. AFP PHOTO / CARL DE SOUZA

Georgia's Davit Modzmanashvili (R) wrestles Kazakhstan's Daulet Shabanbay in their Men's 120kg Freestyle quarterfinal match on August 11, 2012 during the wrestling event of the London 2012 Olympic Games. AFP PHOTO / MARWAN NAAMANI

France's Julie Bresset celebrates as she crosses the finish line and win the women's cycling cross-country mountain bike race of the London 2012 Olympic Games on August 11, 2012 at Hadleigh Farm in Benfleet. AFP PHOTO / CARL DE SOUZA

Ukraine's Alina Maksymenko performs her ball program during the individual all-around final of the rythmic gymnastics event of the London Olympic Games on August 11, 2012 at Wembley arena in London. AFP PHOTO / BEN STANSALL

France's Julie Bresset celebrates as she crosses the finish line and win the women's cycling cross-country mountain bike race of the London 2012 Olympic Games on August 11, 2012 at Hadleigh Farm in Benfleet. AFP PHOTO / CARL DE SOUZA

Sergey Kirdyapkin of Russia in action on the final lap during the Men's 50km Walk on Day 15 of the London 2012 Olympic Games on The Mall in London on August 11, 2012. AFP PHOTO / RYAN PIERSE / POOL

Mexico's forward Oribe Peralta (L) scores the opening goal against Brazil in the men's football final match between Brazil and Mexico at the Millenium stadium in Cardiff during the London Olympic Games on August 11, 2012. AFP PHOTO / MARTIN BERNETTI

Mexico's forward Oribe Peralta (L) celebrates after scoring the opening goal against Brazil in the men's football final match between Brazil and Mexico at the Millenium stadium in Cardiff during the London Olympic Games on August 11, 2012. AFP PHOTO / MARTIN BERNETTI

Brazil's defender Juan Jesus (L) fights for the ball with Mexico's midfielder Hector Herrera in the men's football final match between Brazil and Mexico at the Millenium stadium in Cardiff during the London Olympic Games on August 11, 2012. AFP PHOTO / MARTIN BERNETTI

US' Tervel Ivaylov Dlagnev (L) reacts after being defeated by Uzbekistan's Artur Taymazov in their Men's 120kg Freestyle semifinal match on August 11, 2012 during the wrestling event of the London 2012 Olympic Games. AFP PHOTO / YURI CORTEZ

Japan's Kenichi Yumoto (bottom) wrestles Azerbaijan's Toghrul Asgarov in their Men's 60kg Freestyle quarterfinal match on August 11, 2012 during the wrestling event of the London 2012 Olympic Games. AFP PHOTO / YURI CORTEZ

Mexico's midfielder Jorge Enriquez (C) vies for the ball with Brazil's midfielder Sandro (L) and Brazil's defender Thiago Silva (R) during the men's football final match between Brazil and Mexico at the Wembley stadium in London during the London Olympic Games on August 11, 2012. AFP PHOTO / DANIEL GARCIA

Poland's Joanna Mitrosz performs her clubs program during the individual all-around final of the rythmic gymnastics event of the London Olympic Games on August 11, 2012 at Wembley arena in London. AFP PHOTO / THOMAS COEX

France's Julie Bresset celebrates as she crosses the finish line and wins the women's cycling cross-country mountain bike race of the London 2012 Olympic Games on August 11, 2012 at Hadleigh Farm in Benfleet. AFP PHOTO / LEON NEAL

France's Julie Bresset celebrates after crossing the finish line and winning the women's cycling cross-country mountain bike race of the London 2012 Olympic Games on August 11, 2012 at Hadleigh Farm in Benfleet. AFP PHOTO / LEON NEAL

Bulgaria's Silviya Miteva performs her clubs program during the individual all-around final of the rythmic gymnastics event of the London Olympic Games on August 11, 2012 at Wembley arena in London. AFP PHOTO / BEN STANSALL

Finland's (R) Silja Lehtinen, Silja Kanerva, Mikaela Wulff compete next to Russia's Elena Oblova (partially hidden by a wave) during the women's sailing Elliott 6m match for bronze against Russia during the 2012 London Olympic Games in Weymouth on August 11, 2012. AFP PHOTO / WILLIAM WEST

Tomii Shinichi (foreground) of Japan competes next to Chao Zhongrong (C) and Nicholas Woodbridge (top) of Great Britain in the swimming 200m freestyle part of the Modern Pentathlon at the London 2012 Olympic Games in London on August 11, 2012. AFP PHOTO / ADEK BERRY

Mexico's forward Oribe Peralta (front) fights for the ball with Brazil's midfielder Sandro (L) and Brazil's defender Juan Jesus in the men's football final match between Brazil and Mexico at Wembley stadium during the London Olympic Games on August 11, 2012. AFP PHOTO / MARTIN BERNETTI

Puerto Rico's Jaime Yusept Espinal (R) wrestles Belarus' Soslan Gattsiev in their Men's 84kg Freestyle semifinal match on August 11, 2012 during the wrestling event of the London 2012 Olympic Games. AFP PHOTO / MARWAN NAAMANI

Sergey Kirdyapkin of Russia is in action during the Men's 50km Walk on Day 15 of the London 2012 Olympic Games at The Mall on August 11, 2012 in London, England. AFP PHOTO / RYAN PIERSE / POOL

Brazil's midfielder Oscar runs witht he ball during the men's football final match between Brazil and Mexico at the Wembley stadium in London during the London 2012 Olympic Games on August 11, 2012. AFP PHOTO / KHALED DESOUKI

Spectators look on during the men's field hockey bronze medal match between Australia and Britain at The Riverbank Arena in London on August 11, 2012, for The London 2012 Olympic Games. AFP PHOTO / SAEED KHAN

Russia's Besik Kudukhov (R) reacts while defeating North Korea's Ri Jong Myong in their Men's 60kg Freestyle semifinal match on August 11, 2012 during the wrestling event of the London 2012 Olympic Games. AFP PHOTO / YURI CORTEZ

Britain's Annie Last (L) clashes with Canada's Catharine Pendrel in the women's cycling cross-country mountain bike race of the London 2012 Olympic Games on August 11, 2012 at Hadleigh Farm in Benfleet. AFP PHOTO / LEON NEAL

Picture taken with a robotic camera Poland's Joanna Mitrosz performs her clubs program during the individual all-around final of the rythmic gymnastics event of the London Olympic Games on August 11, 2012 at Wembley arena in London. Russia's Evgeniya Kanaeva won gold while her compatriot Daria Dmitrieva took silver and Belarus' Liubou Charkashyna got bronze. AFP PHOTO / ANTONIN THUILLIER

Poland's Joanna Mitrosz performs her ribbon program during the individual all-around final of the rythmic gymnastics event of the London Olympic Games on August 11, 2012 at Wembley arena in London. Russia's Evgeniya Kanaeva won gold while her compatriot Daria Dmitrieva took silver and Belarus' Liubou Charkashyna got bronze. AFP PHOTO / BEN STANSALL

South Korea's Hwang Woojin loses control of his horse during the Show Jumping event of the Modern Pentathlon during the 2012 London Olympics at the Equestrian venue in Greenwich Park, London, on August 11, 2012. AFP PHOTO / JOHN MACDOUGALL

South Korea's Hwang Woojin loses control of his horse during the Show Jumping event of the Modern Pentathlon during the 2012 London Olympics at the Equestrian venue in Greenwich Park, London, on August 11, 2012. AFP PHOTO / JOHN MACDOUGALL

South Korea's Hwang Woojin loses control of his horse during the Show Jumping event of the Modern Pentathlon during the 2012 London Olympics at the Equestrian venue in Greenwich Park, London, on August 11, 2012. AFP PHOTO / JOHN MACDOUGALL

South Korea's Hwang Woojin loses control of his horse during the Show Jumping event of the Modern Pentathlon during the 2012 London Olympics at the Equestrian venue in Greenwich Park, London, on August 11, 2012. AFP PHOTO / JOHN MACDOUGALL

The horse of South Korea's Hwang Woojin falls after he lost its control during the Show Jumping event of the Modern Pentathlon during the 2012 London Olympics at the Equestrian venue in Greenwich Park, London, on August 11, 2012. AFP PHOTO / JOHN MACDOUGALL

South Korea's Hwang Woojin loses control of his horse during the Show Jumping event of the Modern Pentathlon during the 2012 London Olympics at the Equestrian venue in Greenwich Park, London, on August 11, 2012. AFP PHOTO / JOHN MACDOUGALL

China's Cao Zhongrong competes in the Show Jumping event of the Modern Pentathlon during the 2012 London Olympics at the Equestrian venue in Greenwich Park, London, on August 11, 2012. AFP PHOTO / JOHN MACDOUGALL

ADDING NAME OF HORSE South Korea's Hwang Woojin loses control of his horse Shearwater Oscar during the Show Jumping event of the Modern Pentathlon during the 2012 London Olympics at the Equestrian venue in Greenwich Park, London, on August 11, 2012. AFP PHOTO / JOHN MACDOUGALL

Russia's Sergey Kirdyapkin (C) and athletes competes in the London 2012 Olympic Games Men's 50km race walk in central London on August 11, 2012. Quatemala's Jaime Quiyuch (L), France Yohann Diniz (C), Russia Sergey Bakulin. AFP PHOTO / FRANCK FIFE

Competitors take the start of the women's 20km walk at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / MARTIN BUREAU

Competitors take the start of the women's 20km walk at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / MARTIN BUREAU

Athletes compete in the women's 20km walk at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / MARTIN BUREAU

Puerto Rico's Franklin Gomez Matos (L) wrestles India's Yogeshwar Dutt in their Men's 60kg Freestyle repechage round 1 match on August 11, 2012 during the wrestling event of the London 2012 Olympic Games. AFP PHOTO / MARWAN NAAMANI

Hungary's Adam Marosi competes in the Show Jumping event of the Modern Pentathlon during the 2012 London Olympics at the Equestrian venue in Greenwich Park, London, on August 11, 2012. AFP PHOTO / JOHN MACDOUGALL

Hungary's Adam Marosi competes in the Show Jumping event of the Modern Pentathlon during the 2012 London Olympics at the Equestrian venue in Greenwich Park, London, on August 11, 2012. AFP PHOTO / JOHN MACDOUGALL

Russian guard Becky Hammon (R) is challenged by Australian forward Rachel Jarry during the London 2012 Olympic Games women's bronze medal basketball game between Australia and Russia at the North Greenwich Arena in London on August 11, 2012. AFP PHOTO /EMMANUEL DUNAND

China's Liu Hong (L) and Russia's Olga Kaniskina compete in the women's 20km walk at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / MIGUEL MEDINA

Australian players celebrate winning 83-74 against Russia during the London 2012 Olympic Games women's bronze medal basketball game between Australia and Russia at the North Greenwich Arena in London on August 11, 2012. AFP PHOTO /MARK RALSTON

Azerbaijan's Toghrul Asgarov celebrates with his coach after defeating Russia's Besik Kudukhov in their Men's 60kg Freestyle gold medal match on August 11, 2012 during the wrestling event of the London 2012 Olympic Games. AFP PHOTO / MARWAN NAAMANI

Russian centre Irina Osipova (R) jumps for the ball with Australian centre Lauren Jackson during the London 2012 Olympic Games women's bronze medal basketball game between Australia and Russia at the North Greenwich Arena in London on August 11, 2012. AFP PHOTO /MARK RALSTON

US' Brigetta Barrett competes in the women's high jump final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / FRANCK FIFE

Russia's Anna Chicherova competes in the women's high jump final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / FRANCK FIFE

France's Melanie Melfort competes in the women's high jump final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / FRANCK FIFE

View of the Olympic flame at the athletics event held at the Olympic Stadium during the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / ERIC FEFERBERG

Russia's Irina Gordeeva competes in the women's high jump final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / ADRIAN DENNIS

Britain's Mohamed Farah wins the men's 5000m final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / OLIVIER MORIN

Britain's Mohamed Farah celebrates after winning the men's 5000m final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / OLIVIER MORIN

Britain's Mohamed Farah celebrates after winning the men's 5000m final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / OLIVIER MORIN

Finland's Tero Pitakamaki competes in the men's javelin throw final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / FRANCK FIFE

Ukraine's Oleksandr Pyatnytsa competes in the men's javelin throw final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / GABRIEL BOUYS

Britain's Mohamed Farah celebrates after winning the men's 5000m final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / GABRIEL BOUYS

Britain's Mohamed Farah celebrates after winning the men's 5000m final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / GABRIEL BOUYS

Britain's Mohamed Farah celebrates after winning the men's 5000m final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / ERIC FEFERBERG

Jamaica's Yohan Blake (L) gives the relay baton to Jamaica's Usain Bolt as they compete in the men's 4X100 relay final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / CARL COURT

Jamaica's Usain Bolt (R) wins the men's 4X100 relay final next to US' Ryan Bailey at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / GABRIEL BOUYS

Jamaica's Usain Bolt crosses the finish line to win ahead of US' Ryan Bailey in the men's 4X100 relay final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO/FRANCOIS XAVIER MARIT

Jamaica's Usain Bolt (R) and US' Ryan Bailey (L) compete in the men's 4X100 relay final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO / GABRIEL BOUYS

Atheletes cross the finish line in the men's 4X100 relay final at the athletics event of the London 2012 Olympic Games on August 11, 2012 in London. AFP PHOTO/FRANCOIS XAVIER MARIT