Russia's Natalia Vorobieva celebrates after winning her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING TPX IMAGES OF THE DAY)

Russia's Natalia Vorobieva celebrates after winning her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Grigory Dukor (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva celebrates after winning her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Grigory Dukor (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Gold medallist Russia's Natalia Vorobieva (2nd L), silver medallist Bulgaria's Stanka Zlateva Hristova (L) and bronze medallists Kazakhstan's Guzel Manyurova and Spain's Maider Unda (R) pose at the women's 72kg freestyle wrestling victory ceremony at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Grigory Dukor (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva (2nd L) poses as though she is biting her gold medal near silver medallist Bulgaria's Stanka Zlateva Hristova (L) and bronze medallists Kazakhstan's Guzel Manyurova and Spain's Maider Unda (R) during the women's 72kg freestyle wrestling victory ceremony at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva poses as though she is biting her gold medal next to silver medallist Bulgaria's Stanka Zlateva Hristova (L) during the women's 72kg freestyle wrestling victory ceremony at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Silver medallist Bulgaria's Stanka Zlateva Hristova wipes away tears during the women's 72kg freestyle wrestling victory ceremony at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva fights against Bulgaria's Stanka Zlateva Hristova (L) during their women's 72kg freestyle gold medal wrestling match at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva and Bulgaria's Stanka Zlateva Hristova (R) prepare to fight during their women's 72kg freestyle gold medal wrestling match at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva celebrates after winning her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva celebrates after winning her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva celebrates with her coaches after winning her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING TPX IMAGES OF THE DAY)

Russia's Natalia Vorobieva celebrates (R) as the referee raises her hand after she won her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova (L) at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING TPX IMAGES OF THE DAY)

Russia's Natalia Vorobieva celebrates with her coaches after winning her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Grigory Dukor (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva celebrates after winning her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva celebrates with her coaches after winning her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva celebrates after winning her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva celebrates after winning her women's 72kg freestyle gold medal wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva celebrates after winning her women's 72kg freestyle wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva celebrates after winning her women's 72kg freestyle wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Russia's Natalia Vorobieva celebrates after winning her women's 72kg freestyle wrestling match against Bulgaria's Stanka Zlateva Hristova at the London 2012 Olympic Games at the ExCel venue August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: SPORT OLYMPICS SPORT WRESTLING)

Cameroon's Annabel Laure Ali (in red) fights with Bulgaria's Stanka Zlateva Hristova on the Women's 72Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Grigory Dukor (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Spain's Maider Unda (in red) fights with Bulgaria's Stanka Zlateva Hristova on the Women's 72Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS SPORT WRESTLING TPX IMAGES OF THE DAY)

Spain's Maider Unda (in red) fights with Bulgaria's Stanka Zlateva Hristova on the Women's 72Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Spain's Maider Unda (in red) fights with Bulgaria's Stanka Zlateva Hristova on the Women's 72Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Stanka Zlateva of Bulgaria celebrates after winning the gold medal against Russia's Ekatarina Bukina after their women's 72kg freestyle wrestling gold medal match at the Senior Wrestling World Championship in Istanbul, 16 September 2011. REUTERS/Osman Orsal (TURKEY - Tags: SPORT WRESTLING) 

Stanka Zlateva of Bulgaria (red) wrestles with Russia's Ekatarina Bukina during their women's 72kg freestyle wrestling gold medal match at the Senior Wrestling World Championship in Istanbul, 16 September 2011. REUTERS/Osman Orsal (TURKEY - Tags: SPORT WRESTLING) 

Stanka Zlateva of Bulgaria (red) wrestles with Russia's Ekatarina Bukina during their women's 72kg freestyle wrestling gold medal match at the Senior Wrestling World Championship in Istanbul, 16 September 2011. REUTERS/Osman Orsal (TURKEY - Tags: SPORT WRESTLING) 

Stanka Zlateva Hristova of Bulgaria celebrates her victory over Ohenewa Akuffo of Canada in their women's 72 kg free style gold medal match at the World Wrestling Championships in Moscow September 10, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Stanka Zlateva Hristova of Bulgaria (red) challenges Ohenewa Akuffo of Canada in their women's 72 kg free style gold medal match at the World Wrestling Championships in Moscow September 10, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Stanka Zlateva Hristova of Bulgaria (red) challenges Ohenewa Akuffo of Canada in their women's 72 kg free style gold medal match at the World Wrestling Championships in Moscow September 10, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Stanka Zlateva Hristova of Bulgaria celebrates her victory over Ohenewa Akuffo of Canada in their women's 72 kg free style gold medal match at the World Wrestling Championships in Moscow September 10, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Stanka Zlateva Hristova of Bulgaria (red) challenges Anna Jenny Fransson of Sweden during their 72kg women's freestyle match at the World Wrestling Championships in Moscow September 10, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Bulgaria's Stanka Zlateva (red) wrestles with Russia's Ekaterina Bukina during the Female Wrestling 72kg gold medal match at the Senior Wrestling European Championship in Baku April 16, 2010. REUTERS/David Mdzinarishvili (AZERBAIJAN - Tags: SPORT WRESTLING) 

Bulgaria's Stanka Zlateva (red) wrestles with Russia's Ekaterina Bukina during the Female Wrestling 72kg gold medal match at the Senior Wrestling European Championship in Baku April 16, 2010. REUTERS/David Mdzinarishvili (AZERBAIJAN - Tags: SPORT WRESTLING) 

Stanka Zlateva of Bulgaria walks away after being defeated by Wang Jiao of China in their 72kg women's freestyle wrestling final bout at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Issei Kato (CHINA) 

Stanka Zlateva of Bulgaria poses with her silver medal in the 72kg women's freestyle wrestling at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Issei Kato (CHINA) 

Stanka Zlateva of Bulgaria poses with her silver medal in the 72kg women's freestyle wrestling at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Issei Kato (CHINA) 

Stanka Zlateva of Bulgaria poses with her silver medal in the 72kg women's freestyle wrestling at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Issei Kato (CHINA) 

Wang Jiao of China (in red) fights Stanka Zlateva of Bulgaria in their 72kg women's freestyle wrestling final bout at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Issei Kato (CHINA) 

Wang Jiao of China (in red) fights Stanka Zlateva of Bulgaria in their 72kg women's freestyle wrestling final bout at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Issei Kato (CHINA) 

(L-R) Silver medallist Stanka Zlateva of Bulgaria, gold medallist Wang Jiao of China, bronze medallists Kyoko Hamaguchi of Japan and Agnieszka Wieszczek of Poland pose during the medal ceremony for the 72 kg women's freestyle wrestling at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Issei Kato (CHINA) 

Bulgaria officials react during the 72kg women's freestyle wrestling final bout between Wang Jiao of China and Stanka Zlateva of Bulgaria at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Oleg Popov (CHINA) 

Wang Jiao of China celebrates after defeating Stanka Zlateva of Bulgaria in their 72 kg women's freestyle wrestling final bout at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Issei Kato (CHINA) 

Wang Jiao of China (in red) fights Stanka Zlateva of Bulgaria in their 72kg women's freestyle wrestling final bout at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Oleg Popov (CHINA) 

Wang Jiao of China celebrates after defeating Stanka Zlateva of Bulgaria in their 72 kg women's freestyle wrestling final bout at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Oleg Popov (CHINA) 

Wang Jiao of China celebrates after defeating Stanka Zlateva of Bulgaria in their 72 kg women's freestyle wrestling final bout at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Oleg Popov (CHINA) 

Fans celebrate after Wang Jiao of China defeated Stanka Zlateva of Bulgaria in the 72 kg women's freestyle wrestling final bout at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Oleg Popov (CHINA) 

Wang Jiao of China (in red) fights Stanka Zlateva of Bulgaria in their 72kg women's freestyle wrestling final bout at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Issei Kato (CHINA) 

Wang Jiao of China celebrates after defeating Stanka Zlateva of Bulgaria in their 72 kg women's freestyle wrestling final bout at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Issei Kato (CHINA) 

Stanka Zlateva (top) of Bulgaria fights Agnieszka Wieszczek of Poland during the women's 72kg freestyle wrestling semifinal competition at the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Oleg Popov (CHINA) 

Bulgarian wrestler Stanka Zlateva (R) shakes hands with her coach Simoen Shterev after a training session in Belmeken, some 120 km (75 miles) southeast of the capital Sofia May 12, 2008. Raw talent, an attractive personality and tough-minded ambition have made Zlateva a hot sporting property at a time when the sport in Bulgaria desperately needs new heroes. To match feature OLYMPICS/WRESTLING-ZLATEVA REUTERS/Stoyan Nenov (BULGARIA) 

Bulgarian wrestler Stanka Zlateva warms up during a training session in Belmeken, some 120 km (75 miles) southeast of the capital Sofia May 12, 2008. Raw talent, an attractive personality and tough-minded ambition have made Zlateva a hot sporting property at a time when the sport in Bulgaria desperately needs new heroes. To match feature OLYMPICS/WRESTLING-ZLATEVA REUTERS/Stoyan Nenov (BULGARIA) 

Bulgarian wrestler Stanka Zlateva (L) walks with her coach Simoen Shterev after a training session in Belmeken, some 120 km (75 miles) southeast of the capital Sofia May 12, 2008. Raw talent, an attractive personality and tough-minded ambition have made Zlateva a hot sporting property at a time when the sport in Bulgaria desperately needs new heroes. To match feature OLYMPICS/WRESTLING-ZLATEVA REUTERS/Stoyan Nenov (BULGARIA) 

Bulgarian wrestler Stanka Zlateva (R) and her coach Simoen Shterev speak during an interview with Reuters in Belmeken, some 120 km (75 miles) southeast of the capital Sofia May 12, 2008. Raw talent, an attractive personality and tough-minded ambition have made Zlateva a hot sporting property at a time when the sport in Bulgaria desperately needs new heroes. To match feature OLYMPICS/WRESTLING-ZLATEVA REUTERS/Stoyan Nenov (BULGARIA) 

Bulgaria's Stanka Zlateva (blue) wrestles with Kristie Marano of the U.S. during the Female Wrestling 72kg final match at the Senior Wrestling World Championship in Baku September 23, 2007. REUTERS/David Mdzinarishvili (AZERBAIJAN) 

Bulgaria's Stanka Zlateva (blue) wrestles with Kristie Marano of the U.S. during the Female Wrestling 72kg final match at the Senior Wrestling World Championship in Baku September 23, 2007. REUTERS/David Mdzinarishvili (AZERBAIJAN) 

Bulgaria's Stanka Zlateva (R) celebrates winning the gold medal with her coach during the Female Wrestling 72kg final match at the Senior Wrestling World Championship in Baku September 23, 2007. REUTERS/David Mdzinarishvili (AZERBAIJAN) 

Bulgaria's Stanka Zlateva (L) competes against Ukraine's Svitlana Sayenko during their women's freestyle under-72kg (158 pounds) wrestling final at the European Wrestling Championship in Sofia April 18, 2007. REUTERS/Nikolay Doychinov (BULGARIA) 

Bulgaria's Stanka Zlateva celebrates with her coach after defeating Ukraine's Svitlana Sayenko during their women's freestyle under-72kg (158 pounds) wrestling final at the European Wrestling Championship in Sofia April 18, 2007. REUTERS/Nikolay Doychinov (BULGARIA)