Tennis player Maria Sharapova (R) runs next to Olympic pole vault champion Yelena Isinbayeva with the Olympic flame during the opening ceremony of the 2014 Sochi Winter Olympic Games, February 7, 2014. REUTERS/Issei Kato (RUSSIA - Tags: OLYMPICS SPORT) 

Britan's Princess Anne talks with Russian pole vaulter and Mayor of the Coastal Cluster Olympic Village Yelena Isinbayeva (R), during the welcoming ceremony for the British Olympic team in the Athletes Village at the Olympic Park ahead of the 2014 Winter Olympic Games in Sochi February 6, 2014. REUTERS/Laszlo Balogh (RUSSIA - Tags: SPORT OLYMPICS) 

Britan's Princess Anne talks with Russian pole vaulter and Mayor of the Coastal Cluster Olympic Village Yelena Isinbayeva (R), during the welcoming ceremony for the British Olympic team in the Athletes Village at the Olympic Park ahead of the 2014 Winter Olympic Games in Sochi February 6, 2014. REUTERS/Laszlo Balogh (RUSSIA - Tags: SPORT OLYMPICS) 

Britan's Princess Anne talks with Russian pole vaulter and Mayor of the Coastal Cluster Olympic Village Yelena Isinbayeva (R), during the welcoming ceremony for the British Olympic team in the Athletes Village at the Olympic Park ahead of the 2014 Winter Olympic Games in Sochi February 6, 2014. REUTERS/Laszlo Balogh (RUSSIA - Tags: SPORT OLYMPICS) 

Russia's President Vladimir Putin (C), Russian pole vaulter and Mayor of the Coastal Cluster Olympic Village Yelena Isinbayeva (L) and Russia's Sports Minister Vitaly Mutko walk to attend the welcoming ceremony for the Russian team in the Athletes Village at the Olympic Park ahead of the 2014 Winter Olympic Games in Sochi February 5, 2014. REUTERS/Shamil Zhumatov (RUSSIA - Tags: SPORT OLYMPICS POLITICS) 

Russia's President Vladimir Putin (C) is accompanied by Russian pole vaulter and Mayor of the Coastal Cluster Olympic Village Yelena Isinbayeva (L), and Alexei Yashin, national women's ice hockey general manager, as they walk to attend the welcoming ceremony for the team in the Athletes Village at the Olympic Park ahead of the 2014 Winter Olympic Games in Sochi February 5, 2014. REUTERS/Shamil Zhumatov (RUSSIA - Tags: SPORT OLYMPICS POLITICS) 

Russian pole vaulter and Mayor of the Coastal Cluster Olympic Village Yelena Isinbayeva signs the Olympic truce wall in Sochi, February 4, 2014. Sochi will host the 2014 Winter Olympic Games from February 7 to February 23. REUTERS/Eric Gaillard (RUSSIA - Tags: SPORT OLYMPICS ATHLETICS) 

Russian pole vaulter and Mayor of the Coastal Cluster Olympic Village Yelena Isinbayeva gestures after signing the Olympic truce wall in Sochi, February 4, 2014. Sochi will host the 2014 Winter Olympic Games from February 7 to February 23. REUTERS/Eric Gaillard (RUSSIA - Tags: SPORT OLYMPICS ATHLETICS) 

International Olympic Committee (IOC) President Thomas Bach (R) attends the speech of Russian pole vaulter and Mayor of the village Yelena Isinbayeva (L) during a ceremony in the Coastal Cluster Olympic Village in Sochi, February 4, 2014. Sochi will host the 2014 Winter Olympic Games from February 7 to February 23. REUTERS/Eric Gaillard (RUSSIA - Tags: SPORT OLYMPICS) 

International Olympic Committee (IOC) President Thomas Bach (L) eats lunch with Russian pole vaulter and Mayor of the village, Yelena Isinbayeva, in the coastal Athlete's Village at the Sochi 2014 Winter Olympics February 1, 2014. REUTERS/Pascal Le Segretain/Pool (RUSSIA - Tags: SPORT OLYMPICS) 

International Olympic Committee (IOC) President Thomas Bach (L) talks with Russian pole vaulter and Mayor of the village, Yelena Isinbayeva, in the coastal Athlete's Village at the Sochi 2014 Winter Olympics February 1, 2014. REUTERS/Pascal Le Segretain/Pool (RUSSIA - Tags: SPORT OLYMPICS) 

International Olympic Committee (IOC) President Thomas Bach (L) talks with Russian pole vaulter and Mayor of the village, Yelena Isinbayeva in the coastal Athlete's Village at the Sochi 2014 Winter Olympics February 1, 2014. REUTERS/Pascal Le Segretain/Pool (RUSSIA - Tags: SPORT OLYMPICS) 

Gilbert Felli (2nd R), IOC Executive Director for the Olympic Games, joins Russian pole vaulter Yelena Isinbayeva (C), mayor of the Olympic Village and Dmitry Chernyshenko (2nd L), Sochi 2014 Olympics President and CEO in cutting a ribbon to open the Coastal Athletes Village for the 2014 Sochi Winter Olympics, January 30, 2014. REUTERS/David Goldman/Pool (RUSSIA - Tags: SPORT OLYMPICS) 

Gilbert Felli (R), IOC Executive Director for the Olympic Games, joins Russian pole vaulter Yelena Isinbayeva (C), mayor of the Olympic Village and Dmitry Chernyshenko, Sochi 2014 Olympics President and CEO in cutting a ribbon to open the Coastal Athletes Village for the 2014 Sochi Winter Olympics, January 30, 2014. REUTERS/David Goldman/Pool (RUSSIA - Tags: SPORT OLYMPICS) 

Russia's Yelena Isinbayeva reacts on stage her Lifetime Achievement award during the IAAF World Athletics Gala in Monte Carlo November 16, 2013. REUTERS/Eric Gaillard (MONACO - Tags: ENTERTAINMENT ROYALS SPORT ATHLETICS)

Russia's Yelena Isinbayeva reacts on stage with her Lifetime Achievement award during the IAAF World Athletics Gala in Monte Carlo November 16, 2013. REUTERS/Eric Gaillard (MONACO - Tags: ENTERTAINMENT ROYALS SPORT ATHLETICS) 

Russia's Yelena Isinbayeva poses after receiving her Lifetime Achievement award during the IAAF World Athletics Gala in Monte Carlo November 16, 2013. REUTERS/Eric Gaillard (MONACO - Tags: ENTERTAINMENT ROYALS SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia holds her medal at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Denis Balibouse (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia smiles at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Denis Balibouse (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia celebrates at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Denis Balibouse (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia reacts at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Denis Balibouse (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia reacts at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Denis Balibouse (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia kisses her medal at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia wipes her eyes at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia celebrates at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia smiles at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia celebrates at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia smiles at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia kisses her medal at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia smiles at the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Gold medallist Yelena Isinbayeva of Russia celebrates at the the women's pole vault victory ceremony during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 15, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia somersaults on the track as she celebrates after winning gold in the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia (R) hugs Russian Sports Minister Vitali Mutko after winning gold in the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS POLITICS)

Yelena Isinbayeva of Russia celebrates after winning the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates after winning the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia signs autographs after women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Dylan Martinez (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia signs autographs after women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Dylan Martinez (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates her victory in the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Lucy Nicholson (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates her victory in the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Lucy Nicholson (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates her victory in the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Lucy Nicholson (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates her victory in the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Lucy Nicholson (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates with coach Yevgeny Trofimov her victory in the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Lucy Nicholson (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates with her national flag after winning the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Kai Pfaffenbach (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia bows to thank the spectators as she celebrates with her national flag after winning gold in the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Phil Noble (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates her victory in the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Lucy Nicholson (RUSSIA - Tags: SPORT ATHLETICS)

The fingers of Yelena Isinbayeva of Russia are seen as she prepares to compete during the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Dominic Ebenbichler (RUSSIA - Tags: SPORT ATHLETICS)

The fingers of Yelena Isinbayeva of Russia are seen as she prepares to compete during the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Dominic Ebenbichler (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates with her national flag after winning the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Phil Noble (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates with her national flag after winning the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Kai Pfaffenbach (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates with her national flag after winning the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Kai Pfaffenbach (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia celebrates with her national flag after winning the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Kai Pfaffenbach (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia smiles after winning the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Kai Pfaffenbach (RUSSIA - Tags: SPORT ATHLETICS PROFILE)

Yelena Isinbayeva of Russia prepares herself before her last attempt to set a new world record, during the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Dylan Martinez (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia fails to clear the bar in her last attempt to set a new world record, during the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Dylan Martinez (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia reacts after winning the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Maxim Shemetov (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia competes during the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Phil Noble (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva (L) of Russia celebrates with her coach after winning the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Denis Balibouse (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia reacts after winning the women's pole vault final at the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Phil Noble (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia reacts as she celebrates winning the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Dominic Ebenbichler (RUSSIA - Tags: SPORT ATHLETICS)

Yelena Isinbayeva of Russia reacts as she celebrates winning the women's pole vault final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 13, 2013. REUTERS/Dominic Ebenbichler (RUSSIA - Tags: SPORT ATHLETICS)