SportsOlympics

2013 IAAF World Track and Field championships

America's Will Claye competes in the men's triple

America's Will Claye competes in the men's triple jump final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013) Photo Credit: Getty

Scenes from the 2013 IAAF World Track and Field championships in Moscow, Russia.

Jamaica's Usain Bolt (L) competes next to America's
Photo Credit: Getty

Jamaica's Usain Bolt (L) competes next to America's Justin Gatlin during the men's 4x100 metres relay final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

America's Will Claye competes in the men's triple
Photo Credit: Getty

America's Will Claye competes in the men's triple jump final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

France's Teddy Tamgho competes in men's triple jump
Photo Credit: Getty

France's Teddy Tamgho competes in men's triple jump final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

Jamaica's Shelly-Ann Fraser-Pryce (2ndL) crosses the finish line
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Jamaica's Shelly-Ann Fraser-Pryce (2ndL) crosses the finish line and wins the women's 4x100 metres relay final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

America's Matthew Centrowitz celebrates after winning the silver
Photo Credit: Getty

America's Matthew Centrowitz celebrates after winning the silver medal in the men's 1500 metres at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

Germany's Christina Obergfoll celebrates on the podium during
Photo Credit: Getty

Germany's Christina Obergfoll celebrates on the podium during the medal ceremony for the women's javelin throw at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

Kenya's Eunice Jepkoech Sum (front) wins the women's
Photo Credit: Getty

Kenya's Eunice Jepkoech Sum (front) wins the women's 800 metres final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

Russia's Mariya Savinova celebrates on the podium during
Photo Credit: Getty

Russia's Mariya Savinova celebrates on the podium during the medal ceremony for the women's 800 metres at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

America's Justin Gatlin competes during the men's 4x100
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America's Justin Gatlin competes during the men's 4x100 metres relay final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

U.S. bronze medalist Curtis Mitchell celebrates on the
Photo Credit: Getty

U.S. bronze medalist Curtis Mitchell celebrates on the podium during the medal ceremony for the men's 200 metres at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

France's gold medallist Teddy Tamgho gestures on the
Photo Credit: Getty

France's gold medallist Teddy Tamgho gestures on the podium during the medal ceremony for the men's triple jump at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

U.S. Jeneba Tarmoh, U.S. Alexandria Anderson, U.S. English
Photo Credit: Getty

U.S. Jeneba Tarmoh, U.S. Alexandria Anderson, U.S. English Gardner and U.S. Octavious Freeman celebrate after taking gold in the women's 4x100 metres relay final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

(L-R) Jamaica's Nesta Carter, Kemar Bailey-Cole, Nickel Ashmeade
Photo Credit: Getty

(L-R) Jamaica's Nesta Carter, Kemar Bailey-Cole, Nickel Ashmeade and Usain Bolt stand with their gold medals on the podium during the medal ceremony for the men's 4x100 metres relay at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 18, 2013)

MOSCOW, RUSSIA - AUGUST 16: Allyson Felix of
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Allyson Felix of the United States is given assitance after pulling up in the Women's 200 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

Russia's Lev Mosin (C) and teammates celebrate taking
Photo Credit: Getty KIRILL KUDRYAVTSEV

Russia's Lev Mosin (C) and teammates celebrate taking bronze after the men's 4x400 metres relay final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 16, 2013. AFP PHOTO / KIRILL KUDRYAVTSEVKIRILL KUDRYAVTSEV/AFP/Getty Images

MOSCOW, RUSSIA - AUGUST 16: (L-R) silver medalist
Photo Credit: Getty Ian Walton

MOSCOW, RUSSIA - AUGUST 16: (L-R) silver medalist Hagos Gebrhiwet of Ethiopia, gold medalist Mo Farah of Great Britain and bronze medalist Isiah Kiplangat Koech of Kenya pose on the podium during the medal ceremony for the Men's 5000 metres during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Ian Walton/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: Allyson Felix of
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Allyson Felix of the United States is given assitance after pulling up in the Women's 200 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: Gold medalist Mo
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Gold medalist Mo Farah of Great Britain receives his medal from Lord Sebastain Coe during the medal ceremony for the Men's 5000 metres during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: Mo Farah of
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Mo Farah of Great Britain celebrates winning gold in the Men's 5000 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: Gold medalist Mo
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Gold medalist Mo Farah of Great Britain receives his medal from Lord Sebastain Coe during the medal ceremony for the Men's 5000 metres during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: LaShawn Merritt of
Photo Credit: Getty Cameron Spencer

MOSCOW, RUSSIA - AUGUST 16: LaShawn Merritt of the United States crosses the line to win gold in the Men's 4x400 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Cameron Spencer/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: Mo Farah of
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Mo Farah of Great Britain celebrates winning gold in the Men's 5000 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: Mo Farah of
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Mo Farah of Great Britain celebrates winning gold in the Men's 5000 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: Mo Farah of
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Mo Farah of Great Britain celebrates winning gold in the Men's 5000 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: Allyson Felix of
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Allyson Felix of the United States is given assitance after pulling up in the Women's 200 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: Mo Farah of
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Mo Farah of Great Britain celebrates winning gold in the Men's 5000 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: Allyson Felix of
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Allyson Felix of the United States is given assitance after pulling up in the Women's 200 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: Shelly-Ann Fraser-Pryce of
Photo Credit: Getty Paul Gilham

MOSCOW, RUSSIA - AUGUST 16: Shelly-Ann Fraser-Pryce of Jamaica celebrates winning gold in the Women's 200 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Paul Gilham/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: David Verburg, Tony
Photo Credit: Getty Jamie Squire

MOSCOW, RUSSIA - AUGUST 16: David Verburg, Tony Mcquay, Arman Hall and LaShawn Merritt of the United States celebrate after winning gold in the Men's 4x400 metres final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Jamie Squire/Getty Images)

Tony McQuay of the United States celebrates winning
Photo Credit: Getty Images

Tony McQuay of the United States celebrates winning gold in the men's 4x400-meter final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium. (Aug. 16, 2013)

MOSCOW, RUSSIA - AUGUST 16: David Storl of
Photo Credit: Getty Christian Petersen

MOSCOW, RUSSIA - AUGUST 16: David Storl of Germany celebrates winning gold in the Men's Shot Put final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Christian Petersen/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: (L-R) LaShawn Merritt,Tony
Photo Credit: Getty Jamie Squire

MOSCOW, RUSSIA - AUGUST 16: (L-R) LaShawn Merritt,Tony McQuay, Arman Hall and David Verburg of the United States celebrate winning gold in the Men's 4x400 metres relay final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Jamie Squire/Getty Images)

MOSCOW, RUSSIA - AUGUST 16: David Storl of
Photo Credit: Getty Christian Petersen

MOSCOW, RUSSIA - AUGUST 16: David Storl of Germany competes in the Men's Shot Put final during Day Seven of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium at Luzhniki Stadium on August 16, 2013 in Moscow, Russia. (Photo by Christian Petersen/Getty Images)

Bronze medalist Lashinda Demus of the United States
Photo Credit: Getty Images

Bronze medalist Lashinda Demus of the United States looks on after the women's 400 meter hurdles final during Day Six of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium. (Aug. 15, 2013)

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of
Photo Credit: Getty Ian Walton

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of Ukraine celebrates winning gold in the Men's High Jump final during Day Six of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium on August 15, 2013 in Moscow, Russia. (Photo by Ian Walton/Getty Images)

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of
Photo Credit: Getty Mark Kolbe

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of Ukraine celebrates winning gold in the Men's High Jump final during Day Six of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium on August 15, 2013 in Moscow, Russia. (Photo by Mark Kolbe/Getty Images)

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of
Photo Credit: Getty Mark Kolbe

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of Ukraine celebrates winning gold in the Men's High Jump final during Day Six of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium on August 15, 2013 in Moscow, Russia. (Photo by Mark Kolbe/Getty Images)

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of
Photo Credit: Getty Ian Walton

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of Ukraine celebrates winning gold in the Men's High Jump final during Day Six of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium on August 15, 2013 in Moscow, Russia. (Photo by Ian Walton/Getty Images)

MOSCOW, RUSSIA - AUGUST 15: Caterine Ibarguen of
Photo Credit: Getty Mark Kolbe

MOSCOW, RUSSIA - AUGUST 15: Caterine Ibarguen of Colombia celebrates winning gold in the Women's Triple Jump final during Day Six of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium on August 15, 2013 in Moscow, Russia. (Photo by Mark Kolbe/Getty Images)

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of
Photo Credit: Getty Mark Kolbe

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of Ukraine takes off his shoes during Men's High Jump final during Day Six of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium on August 15, 2013 in Moscow, Russia. (Photo by Mark Kolbe/Getty Images)

MOSCOW, RUSSIA - AUGUST 15: Caterine Ibarguen of
Photo Credit: Getty Mark Kolbe

MOSCOW, RUSSIA - AUGUST 15: Caterine Ibarguen of Colombia celebrates winning gold in the Women's Triple Jump final during Day Six of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium on August 15, 2013 in Moscow, Russia. (Photo by Mark Kolbe/Getty Images)

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of
Photo Credit: Getty Mark Kolbe

MOSCOW, RUSSIA - AUGUST 15: Bohdan Bondarenko of Ukraine takes off his shoes during Men's High Jump final during Day Six of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium on August 15, 2013 in Moscow, Russia. (Photo by Mark Kolbe/Getty Images)

Ireland's Robert Hefferman waves during the medal ceremony
Photo Credit: Getty KIRILL KUDRYAVTSEV

Ireland's Robert Hefferman waves during the medal ceremony for the men's 50 kilometres walk at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 15, 2013. AFP PHOTO / KIRILL KUDRYAVTSEVKIRILL KUDRYAVTSEV/AFP/Getty Images

Ireland's Robert Hefferman smiles during the medal ceremony
Photo Credit: Getty KIRILL KUDRYAVTSEV

Ireland's Robert Hefferman smiles during the medal ceremony for the men's 50 kilometres walk at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 15, 2013. AFP PHOTO / KIRILL KUDRYAVTSEVKIRILL KUDRYAVTSEV/AFP/Getty Images

Russia's Mikhail Ryzhov poses with his silver medal
Photo Credit: Getty KIRILL KUDRYAVTSEV

Russia's Mikhail Ryzhov poses with his silver medal during the medal ceremony for the men's 50 kilometres walk at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 15, 2013. AFP PHOTO / KIRILL KUDRYAVTSEVKIRILL KUDRYAVTSEV/AFP/Getty Images

Australia's Jarred Tallent poses with his bronze medal
Photo Credit: Getty KIRILL KUDRYAVTSEV

Australia's Jarred Tallent poses with his bronze medal during the medal ceremony for the men's 50 kilometres walk at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 15, 2013. AFP PHOTO / KIRILL KUDRYAVTSEVKIRILL KUDRYAVTSEV/AFP/Getty Images

(L-R) Silver medallist Russia's Mikhail Ryzhov , gold
Photo Credit: Getty KIRILL KUDRYAVTSEV

(L-R) Silver medallist Russia's Mikhail Ryzhov , gold medallist Ireland's Robert Hefferman and bronze Australia's Jarred Tallent pose during the medal ceremony for the men's 50 kilometres walk at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 15, 2013. AFP PHOTO / KIRILL KUDRYAVTSEVKIRILL KUDRYAVTSEV/AFP/Getty Images

Athletes compete in the men's 3000 metres steeplechase
Photo Credit: Getty FRANCK FIFE

Athletes compete in the men's 3000 metres steeplechase final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 15, 2013. AFP PHOTO / FRANCK FIFEFRANCK FIFE/AFP/Getty Images

Athletes compete in the men's 3000 metres steeplechase
Photo Credit: Getty FRANCK FIFE

Athletes compete in the men's 3000 metres steeplechase final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 15, 2013. AFP PHOTO / FRANCK FIFEFRANCK FIFE/AFP/Getty Images

Greece's Athanasia Perra competes in the women's triple
Photo Credit: Getty FRANCK FIFE

Greece's Athanasia Perra competes in the women's triple jump final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 15, 2013. AFP PHOTO / FRANCK FIFEFRANCK FIFE/AFP/Getty Images

US Michael Tinsley reacts after the men's 400
Photo Credit: Getty FRANCK FIFE

US Michael Tinsley reacts after the men's 400 metres hurdles final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 15, 2013. AFP PHOTO / FRANCK FIFEFRANCK FIFE/AFP/Getty Images

Trinidad and Tobago's Jehue Gordon (R) and Puerto
Photo Credit: Getty OLIVIER MORIN

Trinidad and Tobago's Jehue Gordon (R) and Puerto Rico's Javier Culson compete in the men's 400 metres hurdles final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 15, 2013. AFP PHOTO / OLIVIER MORINOLIVIER MORIN/AFP/Getty Images

Russia's Anna Pyatykh competes in the women's triple
Photo Credit: Getty FRANCK FIFE

Russia's Anna Pyatykh competes in the women's triple jump final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow on August 15, 2013. AFP PHOTO / FRANCK FIFEFRANCK FIFE/AFP/Getty Images

Bronze medalist Cuba's Yarisley Silva competes in the
Photo Credit: AP Photo David J. Phillip

Bronze medalist Cuba's Yarisley Silva competes in the women's pole vault final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/David J. Phillip)

Russia's Yelena Isinbayeva walks off the infield wearing
Photo Credit: AP Photo Matt Dunham

Russia's Yelena Isinbayeva walks off the infield wearing the national flag after winning the gold medal in the women's pole vault final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Matt Dunham)

From right, Belgium's Nafissatou Thiam, Canada's Brianne Theisen
Photo Credit: AP Photo Ivan Sekretarev

From right, Belgium's Nafissatou Thiam, Canada's Brianne Theisen Eaton, Algeria's Yasmina Omrani, Hungary's Gyorgyi Farkas-Zsivoczky, United States' Bettie Wade and Belarus' Yana Maksimava greet the crowd following the 800-meter heptathlon at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Ivan Sekretarev)

Athletes compete in the women's 3000-meter steeplechase final
Photo Credit: AP Photo David J. Phillip

Athletes compete in the women's 3000-meter steeplechase final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/David J. Phillip)

Russia's Yelena Isinbayeva competes in the women's pole
Photo Credit: AP Photo David J. Phillip

Russia's Yelena Isinbayeva competes in the women's pole vault final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/David J. Phillip)

Spain's Diana Martin reacts after competing in a
Photo Credit: AP Photo Ivan Sekretarev

Spain's Diana Martin reacts after competing in a women's 3000-meter steeplechase final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Ivan Sekretarev)

Heptathlon gold medal winner Hanna Melnychenko of Ukraine
Photo Credit: AP Photo Matt Dunham

Heptathlon gold medal winner Hanna Melnychenko of Ukraine reacts as she learns that she set a new personal best at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Matt Dunham)

Kenya's Milcah Chemos Cheywa celebrates winning the gold
Photo Credit: AP Photo Matt Dunham

Kenya's Milcah Chemos Cheywa celebrates winning the gold in the women's 3000-meter steeplechase at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Matt Dunham)

United States' Lashawn Merritt celebrates with his country's
Photo Credit: AP Photo Matt Dunham

United States' Lashawn Merritt celebrates with his country's flag after winning the gold medal in the men's 400-meter final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Matt Dunham)

Russia's Yelena Isinbayeva celebrates winning the gold medal
Photo Credit: AP Photo Misha Japaridze

Russia's Yelena Isinbayeva celebrates winning the gold medal in the women's pole vault final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Misha Japaridze)

Russia's Yelena Isinbayeva celebrates winning the gold medal
Photo Credit: AP Photo Matt Dunham

Russia's Yelena Isinbayeva celebrates winning the gold medal in the women's pole vault final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013.(AP Photo/Matt Dunham)

Ukraine's Hanna Melnychenko, right, and Canada's Brianne Theisen
Photo Credit: AP Photo Anja Niedringhaus

Ukraine's Hanna Melnychenko, right, and Canada's Brianne Theisen Eaton react following the 800-meter heptathlon at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. Melnychenko won gold, Theisen Eaton silver. (AP Photo/Anja Niedringhaus)

United States' Sharon Day, Canada's Brianne Theisen Eaton
Photo Credit: AP Photo Matt Dunham

United States' Sharon Day, Canada's Brianne Theisen Eaton and Ukraine's Hanna Melnychenko, from left, compete in the women's 800-meter of the heptathlon at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Matt Dunham)

Ethiopia's Mohammed Aman, right, United States' Nick Symmonds,
Photo Credit: AP Photo Alexander Zemlianichenko

Ethiopia's Mohammed Aman, right, United States' Nick Symmonds, center, and Djibouti's Ayanleh Souleiman compete in a men's 800-meter final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Alexander Zemlianichenko)

United States' Ashton Eaton, left, speaks with his
Photo Credit: AP Photo Ivan Sekretarev

United States' Ashton Eaton, left, speaks with his wife Canada's Brianne Theisen Eaton after she placed second overall to win silver following the 800-meter heptathlon at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Ivan Sekretarev)

Russia's Yelena Isinbayeva clears the bar in the
Photo Credit: AP Photo Martin Meissner

Russia's Yelena Isinbayeva clears the bar in the women's pole vault final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Martin Meissner)

Ethiopia's gold medalist Mohammed Aman and United States'
Photo Credit: AP Photo Alexander Zemlianichenko

Ethiopia's gold medalist Mohammed Aman and United States' silver medalist Nick Symmonds, left, approach the finish line in the men's 800-meter final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Alexander Zemlianichenko)

Kenya's Milcah Chemos Cheywa, left, and Kenya's Lydia
Photo Credit: AP Photo Anja Niedringhaus

Kenya's Milcah Chemos Cheywa, left, and Kenya's Lydia Chepkurui react after competing in the women's 3000-meter steeplechase final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. Cheywa won gold, Chepkurui silver. (AP Photo/Anja Niedringhaus)

Kenya's Milcah Chemos Cheywa reacts as she crosses
Photo Credit: AP Photo Anja Niedringhaus

Kenya's Milcah Chemos Cheywa reacts as she crosses the finish line to win gold in the women's 3000-meter steeplechase at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Anja Niedringhaus)

Kenya's Milcah Chemos Cheywa celebrates as she crosses
Photo Credit: AP Photo Anja Niedringhaus

Kenya's Milcah Chemos Cheywa celebrates as she crosses the finish line to win gold in the women's 3000-meter steeplechase at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Anja Niedringhaus)

Russia's Yelena Isinbayeva celebrates winning the gold medal
Photo Credit: AP Photo Matt Dunham

Russia's Yelena Isinbayeva celebrates winning the gold medal in the women's pole vault final with a cartwheel at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013.(AP Photo/Matt Dunham)

Russia's Yelena Isinbayeva waves the national flag for
Photo Credit: AP Photo Matt Dunham

Russia's Yelena Isinbayeva waves the national flag for photographers as she celebrates winning the gold medal in the women's pole vault final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013.(AP Photo/Matt Dunham)

Russia's Yelena Isinbayeva bows to the crowd as
Photo Credit: AP Photo Martin Meissner

Russia's Yelena Isinbayeva bows to the crowd as she celebrates winning the gold medal in the women's pole vault final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Martin Meissner)

Gold medal winner Milcah Chemos Cheywa of Kenya,
Photo Credit: AP Photo Martin Meissner

Gold medal winner Milcah Chemos Cheywa of Kenya, left, celebrates with silver medal winner Lydia Chepkurui of Kenya following the women's 3000-meter steeplechase at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Martin Meissner)

United States' Lashawn Merritt poses with the national
Photo Credit: AP Photo Misha Japaridze

United States' Lashawn Merritt poses with the national flag after winning the men's 400-meter final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Misha Japaridze)

United States' Lashawn Merritt competes to win the
Photo Credit: AP Photo Alexander Zemlianichenko

United States' Lashawn Merritt competes to win the men's 400-meter final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Alexander Zemlianichenko)

Kenya's Milcah Chemos Cheywa, center, competes to win
Photo Credit: AP Photo Matt Dunham

Kenya's Milcah Chemos Cheywa, center, competes to win the gold medal in the women's 3000-meter steeplechase final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Matt Dunham)

Russia's Yelena Isinbayeva celebrates winning the gold medal
Photo Credit: AP Photo Martin Meissner

Russia's Yelena Isinbayeva celebrates winning the gold medal in the women's pole vault final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Martin Meissner)

Kenya's Milcah Chemos Cheywa poses with her national
Photo Credit: AP Photo Matt Dunham

Kenya's Milcah Chemos Cheywa poses with her national flag after winning the gold medal in the women's 3000-meter steeplechase final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Matt Dunham)

Germany's Robert Harting poses on the podium for
Photo Credit: AP Photo Alexander Zemlianichenko

Germany's Robert Harting poses on the podium for the men's discus throw with his gold medal at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Alexander Zemlianichenko)

Germany's Robert Harting, right, and Poland's Piotr Malachowski
Photo Credit: AP Photo Alexander Zemlianichenko

Germany's Robert Harting, right, and Poland's Piotr Malachowski pose with their medals on the podium for the men's discus throw at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. Harting won gold, Malachowski silver. (AP Photo/Alexander Zemlianichenko)

Kenya's Milcah Chemos Cheywa celebrates winning the gold
Photo Credit: AP Photo Matt Dunham

Kenya's Milcah Chemos Cheywa celebrates winning the gold medal in the women's 3000-meter steeplechase final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Matt Dunham)

Jamaica's Shelly-Ann Fraser-Pryce celebrates with her gold medal
Photo Credit: AP Photo Alexander Zemlianichenko

Jamaica's Shelly-Ann Fraser-Pryce celebrates with her gold medal on the podium for the women's 100-meter at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Alexander Zemlianichenko)

From left, Poland's Piotr Malachowski, Germany's Robert Harting
Photo Credit: AP Photo Alexander Zemlianichenko

From left, Poland's Piotr Malachowski, Germany's Robert Harting and Estonia's Gerd Kanter pose with their medals on the podium for the men's discus throw at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. Harting won gold, Malachowski silver and Kanter bronze. (AP Photo/Alexander Zemlianichenko)

From left, Ivory Coast's Murielle Ahoure, Jamaica's Shelly-Ann
Photo Credit: AP Photo Alexander Zemlianichenko

From left, Ivory Coast's Murielle Ahoure, Jamaica's Shelly-Ann Fraser-Pryce and United States' Carmelita Jeter pose on the podium for the women's 100-meter at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. Fraser-Pryce won gold, Ahoure silver and Jeter bronze. (AP Photo/Alexander Zemlianichenko)

Kenya's Milcah Chemos Cheywa celebrates winning the gold
Photo Credit: AP Photo Ivan Sekretarev

Kenya's Milcah Chemos Cheywa celebrates winning the gold medal in the women's 3000-meter steeplechase final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Ivan Sekretarev)

Australia's Zoe Buckman, right, leads, from second right
Photo Credit: AP Photo Alexander Zemlianichenko

Australia's Zoe Buckman, right, leads, from second right to left, Kenya's Faith Chepngetich Kipyegon, Ethiopia's Genzebe Dibaba, Russia's Elena Korobkina, Morocco 's Siham Hilali and Kenya's Nancy Jebet Langat to finish first in a women's 1500-meter semifinal at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Alexander Zemlianichenko)

Russia's Yelena Isinbayeva waves the national flag as
Photo Credit: AP

Russia's Yelena Isinbayeva waves the national flag as she celebrates winning the gold medal in the women's pole vault final at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia. (Aug. 13, 2013)

Netherlands' Dafne Schippers poses with her bronze medal
Photo Credit: AP Photo Alexander Zemlianichenko

Netherlands' Dafne Schippers poses with her bronze medal for the heptathlon during the medals ceremony at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Alexander Zemlianichenko)

Ukraine's Hanna Melnychenko poses with her gold medal
Photo Credit: AP Photo Alexander Zemlianichenko

Ukraine's Hanna Melnychenko poses with her gold medal for the heptathlon during the medals ceremony at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Tuesday, Aug. 13, 2013. (AP Photo/Alexander Zemlianichenko)

Tanya Holliday of Australia and Maria Michta of
Photo Credit: Getty

Tanya Holliday of Australia and Maria Michta of the United States compete in the Women's 20 km Race Walk final during Day Four of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium in Moscow, Russia. (Aug. 13, 2013)

Usain Bolt of Jamaica crosses the line to
Photo Credit: Getty

Usain Bolt of Jamaica crosses the line to win gold ahead of (L-R) Mike Rodgers of the United States, Nesta Carter of Jamaica, Kemar Bailey-Cole of Jamaica,Justin Gatlin of the United States, Nickel Ashmeade of Jamaica compete in the Men's 100 metres Final during Day Two of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium. (Aug. 11, 2013)

Usain Bolt of Jamaica celebrates winning gold in
Photo Credit: Getty

Usain Bolt of Jamaica celebrates winning gold in the Men's 100 metres Final during Day Two of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium. (Aug. 11, 2013)

Usain Bolt of Jamaica crosses the line to
Photo Credit: Getty

Usain Bolt of Jamaica crosses the line to win gold n the Men's 100 metres Final during Day Two of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium. (Aug. 11, 2013)

Gold medalist Ashton Eaton of United States stands
Photo Credit: Getty

Gold medalist Ashton Eaton of United States stands on the podium during the medal ceremony for the Decathlon Menduring Day Two of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium. (Aug. 11, 2013)

Usain Bolt of Jamaica (L) and Justin Gatlin
Photo Credit: Getty

Usain Bolt of Jamaica (L) and Justin Gatlin of the United States compete in the Men's 100 metres Final during Day Two of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium. (Aug. 11, 2013)

(L-R) Silver medalist Blessing Okagbare of Nigeria, gold
Photo Credit: Getty

(L-R) Silver medalist Blessing Okagbare of Nigeria, gold medalist Brittney Reese of the United States and bronze medalist Ivana Spanovic of Serbia stand on the podium during the medal ceremony for competes in the Women's Long Jump final during Day Two of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium. (Aug. 11, 2013)

(L-R) Jamaica's Kemar Bailey-Cole, Jamaica's Usain Bolt, US
Photo Credit: Getty

(L-R) Jamaica's Kemar Bailey-Cole, Jamaica's Usain Bolt, US Justin Gatlin and Jamaica's Nickel Ashmeade run during the 100 metres final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. Bolt timed a season's best 9.77 seconds, with American Justin Gatlin claiming silver in 9.85sec and Nesta Carter, also of Jamaica, taking bronze in 9.95sec. (Aug. 11, 2013)

Silver medalist Michael Schrader of Germany, gold medalist
Photo Credit: Getty

Silver medalist Michael Schrader of Germany, gold medalist Ashton Eaton of United States and bronze medalist Damian Warner of Canada stand on the podium during the medal ceremony for the Decathlon Men during Day Two of the 14th IAAF World Athletics Championships Moscow. (Aug. 11, 2013)

Jamaica's Usain Bolt celebrates after winning the 100
Photo Credit: Getty

Jamaica's Usain Bolt celebrates after winning the 100 metres final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. Bolt timed a season's best 9.77 seconds, with American Justin Gatlin claiming silver in 9.85sec and Nesta Carter, also of Jamaica, taking bronze in 9.95sec. (Aug. 11, 2013)

Jamaica's Usain Bolt celebrates after winning the 100
Photo Credit: Getty

Jamaica's Usain Bolt celebrates after winning the 100 metres final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. Bolt timed a season's best 9.77 seconds, with American Justin Gatlin claiming silver in 9.85sec and Nesta Carter, also of Jamaica, taking bronze in 9.95sec. (Aug. 11, 2013)

Silver medalist Justin Gatlin of the United States
Photo Credit: Getty

Silver medalist Justin Gatlin of the United States celebrates after the Men's 100 metres Final during Day Two of the 14th IAAF World Athletics Championships Moscow. (Aug. 11, 2013)

Jamaica's Usain Bolt celebrates after winning the 100
Photo Credit: Getty

Jamaica's Usain Bolt celebrates after winning the 100 metres final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. Bolt timed a season's best 9.77 seconds, with American Justin Gatlin claiming silver in 9.85sec and Nesta Carter, also of Jamaica, taking bronze in 9.95sec. (Aug. 11, 2013)

Ethiopia's Tirunesh Dibaba celebrates winning the women's 10,000
Photo Credit: Getty

Ethiopia's Tirunesh Dibaba celebrates winning the women's 10,000 metres final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 11, 2013)

Croatia's Sandra Perkovic competes during the women's discus
Photo Credit: Getty

Croatia's Sandra Perkovic competes during the women's discus throw final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 11, 2013)

Russia's Elena Isinbaeva competes during the women's pole
Photo Credit: Getty

Russia's Elena Isinbaeva competes during the women's pole vault event at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 11, 2013)

Melina Robert-Michon of France celebrates an attepmt in
Photo Credit: Getty

Melina Robert-Michon of France celebrates an attepmt in the Women's Discus final during Day Two of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium. (Aug. 11, 2013)

Bronze medalist Belaynesh Oljira of Ethiopia reacts after
Photo Credit: Getty

Bronze medalist Belaynesh Oljira of Ethiopia reacts after the Women's 10000 final during Day Two of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium. (Aug. 11, 2013)

Great Britain's Christine Ohuruogu (R) and US Natasha
Photo Credit: Getty

Great Britain's Christine Ohuruogu (R) and US Natasha Hastings run during the women's 400 metres semi-final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 11, 2013)

US athlete Ashton Eaton celebrates after finishing the
Photo Credit: Getty

US athlete Ashton Eaton celebrates after finishing the men's decathlon 1500 metres event and taking gold in the overall event at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 11, 2013)

US athlete Ashton Eaton (C) celebrates on the
Photo Credit: Getty

US athlete Ashton Eaton (C) celebrates on the podium flanked by Germany's Michael Schrader (L) and Canada's Damian Warner during the medal ceremony for the men's decathlon at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. Eaton won the event, Schrader placed second, and Warner, third. (Aug. 11, 2013)

Ethiopia's Tirunesh Dibaba celebrates after winning the women's
Photo Credit: Getty

Ethiopia's Tirunesh Dibaba celebrates after winning the women's 10,000 metres final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 11, 2013)

Kenya's Gladys Cherono (L) celebrates with Kenya's Sally
Photo Credit: Getty

Kenya's Gladys Cherono (L) celebrates with Kenya's Sally Kaptich Chepyego after the women's 10,000 metres final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. (Aug. 11, 2013)

Justin Gatlin celebrates taking silver in the100 metres
Photo Credit: Getty

Justin Gatlin celebrates taking silver in the100 metres final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. Bolt timed a season's best 9.77 seconds, with American Justin Gatlin claiming silver in 9.85sec and Nesta Carter, also of Jamaica, taking bronze in 9.95sec. (Aug. 11, 2013)

Jamaica's Usain Bolt (L) wins the100 metres final
Photo Credit: Getty

Jamaica's Usain Bolt (L) wins the100 metres final at the 2013 IAAF World Championships at the Luzhniki stadium in Moscow. Bolt timed a season's best 9.77 seconds, with American Justin Gatlin claiming silver in 9.85sec and Nesta Carter, also of Jamaica, taking bronze in 9.95sec. (Aug. 11, 2013)

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