Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida celebrates after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg 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)

Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg 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)

Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Damir Sagolj (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg 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)

Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS)

Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS)

Japan's Saori Yoshida reacts after defeating Canada's Tonya Lynn Verbeek on the final of the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS)

Japan's Saori Yoshida celebrates after defeating Russia's Valeriia Zholobova on the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida reacts after defeating Russia's Valeriia Zholobova on the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Grigory Dukor (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida reacts after defeating Russia's Valeriia Zholobova on the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Grigory Dukor (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida fights with Russia's Valeriia Zholobova on the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Grigory Dukor (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida fights with Russia's Valeriia Zholobova on the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Grigory Dukor (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida (in red) fights with Azerbaijan's Yuliya Ratkevich on the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida is announced winner after defeating Azerbaijan Yuliya Ratkevich on the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Grigory Dukor (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida (in red) fights with Azerbaijan on the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Grigory Dukor (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's Saori Yoshida (R) fights with Kelsey Campbell of U.S. on the Women's 55Kg Freestyle wrestling at the ExCel venue during the London 2012 Olympic Games August 9, 2012. REUTERS/Suhaib Salem (BRITAIN - Tags: OLYMPICS SPORT WRESTLING)

Japan's flag bearer Saori Yoshida holds the national flag as she leads the contingent in the athletes parade during the opening ceremony of the London 2012 Olympic Games at the Olympic Stadium July 27, 2012. REUTERS/Jorge Silva (BRITAIN - Tags: SPORT OLYMPICS)

Japan's flag bearer Saori Yoshida holds the national flag as she leads the contingent in the athletes parade during the opening ceremony of the London 2012 Olympic Games at the Olympic Stadium July 27, 2012. REUTERS/Mike Blake (BRITAIN - Tags: SPORT OLYMPICS)

Japan's flagbearer Saori Yoshida holds the national flag as he leads the contingent in the athletes parade during the opening ceremony of the London 2012 Olympic Games at the Olympic Stadium July 27, 2012. REUTERS/Fabrizio Bensch (BRITAIN - Tags: OLYMPICS SPORT)

Japan's flagbearer Saori Yoshida holds the national flag as he leads the contingent in the athletes parade during the opening ceremony of the London 2012 Olympic Games at the Olympic Stadium July 27, 2012. REUTERS/Fabrizio Bensch (BRITAIN - Tags: OLYMPICS SPORT)

Japan's flag bearer Saori Yoshida holds the national flag as she leads the contingent in the athletes parade during the opening ceremony of the London 2012 Olympic Games at the Olympic Stadium July 27, 2012. REUTERS/Murad Sezer (BRITAIN - Tags: OLYMPICS SPORT)

Japan's double Olympics gold medallist wrestler and the team's flagbearer Saori Yoshida reacts after a training session before the start of the London 2012 Olympic Games July 26, 2012. REUTERS/Toru Hanai (BRITAIN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's double Olympics gold medallist wrestler and the team's flagbearer Saori Yoshida (L) attends a training session before the start of the London 2012 Olympic Games in London July 26, 2012. REUTERS/Toru Hanai (BRITAIN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's double Olympics gold medallist wrestler and the team's flagbearer Saori Yoshida (C) sweeps the floor after a training session before the start of the London 2012 Olympic Games July 26, 2012. REUTERS/Toru Hanai (BRITAIN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's double Olympics gold medallist wrestler and the team's flagbearer Saori Yoshida (L) attends a training session before the start of the London 2012 Olympic Games July 26, 2012. REUTERS/Toru Hanai (BRITAIN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's double Olympics gold medallist wrestler and the team's flagbearer Saori Yoshida attends a training session before the start of the London 2012 Olympic Games in London July 26, 2012. REUTERS/Toru Hanai (BRITAIN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's double Olympics gold medallist wrestler and the team's flagbearer Saori Yoshida waves as she attends a send-off ceremony for the team's departure to the London 2012 Olympic Games in Tokyo July 21, 2012. REUTERS/Toru Hanai (JAPAN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's double Olympics gold medallist wrestler and the team's flagbearer Saori Yoshida attends a send-off ceremony for the team's departure to the London 2012 Olympic Games in Tokyo July 21, 2012. REUTERS/Toru Hanai (JAPAN - Tags: SPORT OLYMPICS WRESTLING) 

Japan Olympic Committee Chairman Tsunekazu Takeda (2nd R), two-time Olympic champion of women's wrestling in the 55kg category Saori Yoshida (2nd L) and men's breaststroke swimmer Ryo Tateishi (L) are welcomed by Japanese Prime Minister Yoshihiko Noda (R) at Noda's official residence in Tokyo July 5, 2012.
REUTERS/Toru Yamanaka/Pool (JAPAN - Tags: POLITICS SPORT OLYMPICS) 

Japan's wrestler Saori Yoshida smiles during a training session ahead of the 2012 London Olympics at the National Training Center in Tokyo March 20, 2012. Don't let the fluffy socks fool you. Pint-sized Japanese wrestler Saori Yoshida could just be the most fearsome athlete in any sport at this year's London Olympics. Yoshida, who marched Terminator-like to Olympic wrestling gold in the 2004 and 2008 women's 55-kg division, has never tasted defeat at an Olympics, world or Asian championships. Picture taken March 20, 2012. To match OLY-WRES-YOSHIDA-PROFILE/ REUTERS/Toru Hanai (JAPAN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's wrestler Saori Yoshida poses at a photo session during a training session ahead of the 2012 London Olympics at the National Training Center in Tokyo March 20, 2012. Don't let the fluffy socks fool you. Pint-sized Japanese wrestler Saori Yoshida could just be the most fearsome athlete in any sport at this year's London Olympics. Yoshida, who marched Terminator-like to Olympic wrestling gold in the 2004 and 2008 women's 55-kg division, has never tasted defeat at an Olympics, world or Asian championshipsPicture taken March 20, 2012. To match OLY-WRES-YOSHIDA-PROFILE/ REUTERS/Toru Hanai (JAPAN - Tags: SPORT WRESTLING OLYMPICS) 

Japan's wrestler Saori Yoshida trains during a training session ahead of the 2012 London Olympics at the National Training Center in Tokyo March 20, 2012. Don't let the fluffy socks fool you. Pint-sized Japanese wrestler Saori Yoshida could just be the most fearsome athlete in any sport at this year's London Olympics. Yoshida, who marched Terminator-like to Olympic wrestling gold in the 2004 and 2008 women's 55-kg division, has never tasted defeat at an Olympics, world or Asian championships. Picture taken March 20, 2012. To match OLY-WRES-YOSHIDA-PROFILE/ REUTERS/Toru Hanai (JAPAN - Tags: SPORT WRESTLING OLYMPICS) 

Japan's double Olympics gold medallist wrestler Saori Yoshida (centre R) trains on the chin-up bar with Japan Wrestling Federation president Tomiaki Fukuda before a training session ahead of the 2012 London Olympics at the National Training Center in Tokyo March 20, 2012. Despite her small stature and penchant for fluffy socks, Japanese wrestler Saori Yoshida could be the most intimidating athlete in any sport at this year's London Olympics. REUTERS/Toru Hanai (JAPAN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's double Olympics gold medallist wrestler Saori Yoshida trains during a training session ahead of the 2012 London Olympics at the National Training Center in Tokyo March 20, 2012. Despite her small stature and penchant for fluffy socks, Japanese wrestler Saori Yoshida could be the most intimidating athlete in any sport at this year's London Olympics. REUTERS/Toru Hanai (JAPAN - Tags: SPORT OLYMPICS WRESTLING PROFILE) 

Japan's double Olympics gold medallist wrestler Saori Yoshida (R) trains during a training session ahead of the 2012 London Olympics at the National Training Center in Tokyo March 20, 2012. Despite her small stature and penchant for fluffy socks, Japanese wrestler Saori Yoshida could be the most intimidating athlete in any sport at this year's London Olympics. REUTERS/Toru Hanai (JAPAN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's double Olympics gold medallist wrestler Saori Yoshida (front L) trains during a training session ahead of the 2012 London Olympics at the National Training Center in Tokyo March 20, 2012. Despite her small stature and penchant for fluffy socks, Japanese wrestler Saori Yoshida could be the most intimidating athlete in any sport at this year's London Olympics. REUTERS/Toru Hanai (JAPAN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's double Olympics gold medallist wrestler Saori Yoshida trains during a training session ahead of the 2012 London Olympics at the National Training Center in Tokyo March 20, 2012. Despite her small stature and penchant for fluffy socks, Japanese wrestler Saori Yoshida could be the most intimidating athlete in any sport at this year's London Olympics. REUTERS/Toru Hanai (JAPAN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's double Olympics gold medallist wrestler Saori Yoshida (R) trains during a training session ahead of the 2012 London Olympics at the National Training Center in Tokyo March 20, 2012. Despite her small stature and penchant for fluffy socks, Japanese wrestler Saori Yoshida could be the most intimidating athlete in any sport at this year's London Olympics. REUTERS/Toru Hanai (JAPAN - Tags: SPORT OLYMPICS WRESTLING) 

Japan's double Olympics gold medallist wrestler Saori Yoshida (L) trains during a training session ahead of the 2012 London Olympics at the National Training Center in Tokyo March 20, 2012. Despite her small stature and penchant for fluffy socks, Japanese wrestler Saori Yoshida could be the most intimidating athlete in any sport at this year's London Olympics. REUTERS/Toru Hanai (JAPAN - Tags: SPORT OLYMPICS WRESTLING) 

Saori Yoshida of Japan celebrates her victory over Yuliya Ratkevich of Azerbaijan in their women's 55 kg free style gold medal match at the World Wrestling Championships in Moscow September 9, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Saori Yoshida of Japan celebrates her victory over Yuliya Ratkevich of Azerbaijan in their women's 55 kg free style gold medal match at the World Wrestling Championships in Moscow September 9, 10. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Saori Yoshida of Japan celebrates her victory over Yuliya Ratkevich of Azerbaijan in their women's 55 kg free style gold medal match at the World Wrestling Championships in Moscow September 9, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Saori Yoshida of Japan celebrates her victory over Yuliya Ratkevich of Azerbaijan in their women's 55 kg free style gold medal match at the World Wrestling Championships in Moscow September 9, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Saori Yoshida of Japan celebrates her victory over Yuliya Ratkevich of Azerbaijan in their women's 55 kg free style gold medal match at the World Wrestling Championships in Moscow September 9, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Saori Yoshida of Japan challenges Yuliya Ratkevich of Azerbaijan (red) during their women's 55 kg free style gold medal match at the World Wrestling Championships in Moscow September 9, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Saori Yoshida of Japan challenges Yuliya Ratkevich of Azerbaijan (red) during their women's 55 kg free style gold medal match at the World Wrestling Championships in Moscow September 9, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Saori Yoshida of Japan (red) challenges Tatiana Yadira Suarez of the U.S. during their women's 55 kg free style match at the World Wrestling Championships in Moscow September 9, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Saori Yoshida of Japan (red) challenges Tatiana Yadira Suarez (red) of the U.S. during their women's 55 kg free style match at the World Wrestling Championships in Moscow September 9, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Saori Yoshida of Japan (red) challenges Tamara Kazaryan of Uzbekistan during their women's 55 kg free style match at the World Wrestling Championships in Moscow September 9, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Saori Yoshida of Japan (red) challenges Tamara Kazaryan of Uzbekistan during their women's 55 kg free style match at the World Wrestling Championships in Moscow September 9, 2010. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT WRESTLING) 

Japan's Saori Yoshida raises her arms after defeating Azerbaijan's Sona Ahmedli to win the gold medal in the women's 55 kg free style at the World Wrestling Championships 2009 in Herning September 24, 2009. REUTERS/Bob Strong (DENMARK SPORT WRESTLING) 

Japan's Saori Yoshida (blue) throws Azerbaijan's Sona Ahmedli during their women's 55 kg free style gold medal match at the World Wrestling Championships 2009 in Herning September 24, 2009. REUTERS/Bob Strong (DENMARK SPORT WRESTLING) 

Japan's Saori Yoshida raises her arms after defeating Azerbaijan's Sona Ahmedli to win the gold medal in the women's 55 kg free style at the World Wrestling Championships 2009 in Herning September 24, 2009. REUTERS/Bob Strong (DENMARK SPORT WRESTLING) 

Japan's Saori Yoshida is raised on the shoulders of her coaches after defeating Azerbaijan's Sona Ahmedli to win the gold medal in the women's 55 kg free style at the World Wrestling Championships 2009 in Herning September 24, 2009. REUTERS/Bob Strong (DENMARK SPORT WRESTLING IMAGES OF THE DAY) 

Japan's Saori Yoshida is raised on the shoulders of her coaches after defeating Azerbaijan's Sona Ahmedli to win the gold medal in the women's 55 kg free style at the World Wrestling Championships 2009 in Herning September 24, 2009. REUTERS/Bob Strong (DENMARK SPORT WRESTLING)