Yuko Nakanishi of Japan swims in her women's 200 meters butterfly heat at the National Aquatics Center during the Beijing 2008 Olympics August 12, 2008. Picture taken with underwater camera. REUTERS/Wolfgang Rattay (CHINA) 

Yuko Nakanishi of Japan swims in her women's 200 meters butterfly heat at the National Aquatics Center during the Beijing Olympic Games August 12, 2008. REUTERS/David Gray (CHINA) 

Japan's swimmers Takeshi Matsuda, Kosuke Kitajima, Ai Shibata, Yuko Nakanishi and Megumi Taneda (L-R) gesture during a news conference at the Olympic village ahead of the Beijing 2008 Olympic Games, August 7, 2008. REUTERS/Issei Kato (CHINA)

Japanese swimmers Yuta Suenaga (R), Ai Shibata (L) and Yuko Nakanishi arrive at Beijing airport to participate in the 2008 Beijing Olympic Games, August 6, 2008. REUTERS/Issei Kato (CHINA) 

Japanese swimmers Yuko Nakanishi (L) and Reiko Nkamura arrive at Beijing airport to participate in the 2008 Beijing Olympic Games, August 6, 2008. REUTERS/Issei Kato (CHINA) 

Japan's swimmer Yuko Nakanishi attends a news conference in Tokyo April 21, 2008. Nakanishi will take part in the butterfly event at the Beijing Olympics. REUTERS/Yuriko Nakao (JAPAN) 

Japan's national swimming Olympic team Yuta Suenaga, Tomomi Morita, Kosuke Kitajima, Yuko Nakanishi, Hanae Ito and Reiko Nakamura (L-R) pose during a news conference in Tokyo April 21, 2008. REUTERS/Yuriko Nakao (JAPAN) 

Yuko Nakanishi (R) and Natsumi Hoshi celebrate after the women's 200m butterfly finals at the Japan Swim 2008 national swimming championships in Tokyo April 19, 2008. Nakanishi and Hoshi qualified for the Beijing Olympics on Saturday. REUTERS/Yuriko Nakao (JAPAN) 

Japan's Yuko Nakanishi swims during the women's 200m butterfly finals at the Japan Swim 2008 national swimming championships in Tokyo April 19, 2008. Nakanishi qualified for the Beijing Olympics on Saturday. REUTERS/Yuriko Nakao (JAPAN) 

Japan's Yuko Nakanishi celebrates winning the women's 100m butterfly final at the Japan Swim 2008 swimming championships in Tokyo April 16, 2008. REUTERS/Issei Kato (JAPAN) 

Japan's Yuko Nakanishi swims during the women's 100m butterfly swimming final at the Japan Open short-course swimming championships in Tokyo February 24, 2008. REUTERS/Issei Kato (JAPAN) 

Japan's Yuko Nakanishi swims during the women's 100m butterfly swimming final at the Japan Open short-course swimming championships in Tokyo February 24, 2008. REUTERS/Issei Kato (JAPAN) 

Yuko Nakanishi (L) of Japan and Felicity Galvez of Australia compete in a women's 200m butterfly swimming heat at the World Aquatics Championship in Melbourne March 28, 2007. REUTERS/Wolfgang Rattay (AUSTRALIA) 

Yuko Nakanishi of Japan competes in a women's 200m butterfly swimming heat at the World Aquatics Championship in Melbourne March 28, 2007. REUTERS/David Gray (AUSTRALIA) 

Yuko Nakanishi of Japan gestures after competing in a women's 200m butterfly swimming heat at the World Aquatics Championship in Melbourne March 28, 2007. REUTERS/Wolfgang Rattay (AUSTRALIA) 

Jiao Liuyang of China and Yuko Nakanishi (R) of Japan rest after competing in a women's 200m butterfly swimming heat at the World Aquatics Championship in Melbourne March 28, 2007. REUTERS/Wolfgang Rattay (AUSTRALIA) 

Yuko Nakanishi of Japan and Felicity Galvez (R) of Australia compete in a women's 200m butterfly swimming heat at the World Aquatics Championship in Melbourne March 28, 2007. REUTERS/Wolfgang Rattay (AUSTRALIA) 

Yuko Nakanishi of Japan swims in the the women's 100m butterfly heats, one of the first races of the swimming competition, at the World Aquatics Championships in Melbourne March 25, 2007. REUTERS/David Gray (AUSTRALIA) 

(L-R) Silver medallist Choi Hye-ra of South Korea, gold medallist Yurie Yano of Japan and bronze medallist Yuko Nakanishi pose during the award ceremony for the women's 200m butterfly swimming finals at the 15th Asian Games in Doha December 4, 2006. REUTERS/Jason Reed (QATAR) 

Japan's Yuko Nakanishi reacts after the women's 100m butterfly swimming heats at the 15th Asian Games in Doha December 2, 2006. REUTERS/Jerry Lampen (QATAR) 

Jedrzejczak of Poland talks with Japan's Nakanishi and Australia's Schipper at the World Aquatic Championships in Montreal. Otylia Jedrzejczak of Poland (C) talks with Japan's Yuko Nakanishi (L) and Australia's Jessicah Schipper following the women's 200m butterfly final at the World Aquatic Championships in Montreal July 28, 2005. Jedrzejczak set a new world record with a time of two minutes, 05.61 seconds. Schipper took the silver and Nakanishi the bronze. REUTERS/Jim Young 

Otylia Jedrzejczak of Poland swims past Australia's Jessicah Schipper at the World Aquatic Championships in Montreal. Otylia Jedrzejczak of Poland (top) swims past Australia's Jessicah Schipper in the women's 200m butterfly final at the World Aquatic Championships in Montreal July 28, 2005. Jedrzejczak set a new world record with a time of two minutes, 05.61 seconds. Schipper took the silver and Japan's Yuko Nakanishi the bronze. REUTERS/Shaun Best 

Otylia Jedrzejczak of Poland swims past Australia's Jessicah Schipper at the World Aquatic Championships in Montreal. Otylia Jedrzejczak of Poland (top) swims past Australia's Jessicah Schipper in the women's 200m butterfly final at the World Aquatic Championships in Montreal July 28, 2005. Jedrzejczak set a new world record with a time of two minutes, 05.61 seconds. Schipper took the silver and Japan's Yuko Nakanishi the bronze. REUTERS/Jim Young 

Polish swimmer Otylia Jedrzejczak wipes tears from her eyes after receiving her gold medal in the women's 200m butterfly final at the World Aquatic Championships in Montreal July 28, 2005. Jedrzejczak won a gold medal and set a new world record with a time of two minutes, 05.61 seconds. Australia's Jessicah Schipper took the silver and Japan's Yuko Nakanishi the bronze. REUTERS/Wolfgang Rattay JPM/JJ 

Polish swimmer Otylia Jedrzejczak wipes tears from her eyes after receiving her gold medal in the women's 200m butterfly final at the World Aquatic Championships in Montreal July 28, 2005. Jedrzejczak won a gold medal and set a new world record with a time of two minutes, 05.61 seconds. Australia's Jessicah Schipper took the silver and Japan's Yuko Nakanishi the bronze. REUTERS/Wolfgang Rattay JPM/JJ 

Polish swimmer Otylia Jedrzejczak celebrates receiving her gold medal at the World Aquatic Championships in Montreal. Polish swimmer Otylia Jedrzejczak celebrates receiving her gold medal in the women's 200m butterfly final at the World Aquatic Championships in Montreal July 28, 2005. Jedrzejczak won a gold medal and set a new world record with a time of two minutes, 05.61 seconds. Australia's Jessicah Schipper took the silver and Japan's Yuko Nakanishi the bronze. REUTERS/Wolfgang Rattay 

Otylia Jedrzejczak of Poland swims in the women's 200m butterfly final at the World Aquatic Championships in Montreal. Otylia Jedrzejczak of Poland swims in the women's 200m butterfly final at the World Aquatic Championships in Montreal July 28, 2005. Jedrzejczak set a new world record with a time of two minutes, 05.61 seconds. Australia's Jessicah Schipper took the silver and Japan's Yuko Nakanishi the bronze. REUTERS/Jim Young 

Australia's Jessicah Schipper swims in the women's 200m butterfly final at the World Aquatic Championships in Montreal July 28, 2005. Schipper won a silver medal behind Otylia Jedrzejczak of Poland, who took the gold and set a new world record with a time of two minutes, 05.61 seconds. Japan's Yuko Nakanishi took the bronze. REUTERS/Wolfgang Rattay JPM/JJ 

Otylia Jedrzejczak of Poland swims in the women's 200m butterfly final at the World Aquatic Championships in Montreal. Otylia Jedrzejczak of Poland swims in the women's 200m butterfly final at the World Aquatic Championships in Montreal July 28, 2005. Jedrzejczak set a new world record with a time of two minutes, 05.61 seconds. Australia's Jessicah Schipper took the silver and Japan's Yuko Nakanishi the bronze. REUTERS/Wolfgang Rattay 

Otylia Jedrzejczak of Poland celebrates her world record setting swim at the World Aquatic Championships in Montreal. Otylia Jedrzejczak of Poland celebrates her world record setting swim in the women's 200m butterfly final at the World Aquatic Championships in Montreal July 28, 2005. Jedrzejczak took gold and set a new world record with a time of two minutes, 05.61 seconds. Australia's Jessicah Schipper took the silver and Japan's Yuko Nakanishi the bronze. REUTERS/Jason Reed 

Otylia Jedrzejczak of Poland swims in the women's 200m butterfly final at the World Aquatic Championships in Montreal. Otylia Jedrzejczak of Poland swims in the women's 200m butterfly final at the World Aquatic Championships in Montreal July 28, 2005. Jedrzejczak set a new world record with a time of two minutes, 05.61 seconds. Australia's Jessicah Schipper took the silver and Japan's Yuko Nakanishi the bronze. REUTERS/Jason Reed 

Yuko Nakanishi of Japan swims in her heat in the women's 200m butterfly at the World Aquatic Championships in Montreal July 27, 2005. Nakanishi placed tenth overall in the heats. REUTERS/Christinne Muschi JPM/TC 

Japanese swimmer Yuko Nakanishi competes in her heat in the women's 200m butterfly at the World Aquatic Championships in Montreal July 27, 2005. Nakanishi placed tenth overall in the heats. REUTERS/Wolfgang Rattay JPM/TC 

Japan's Nakanishi celebrates her bronze medal in the womens' 200 metres butterfly at the Athens 2004 Olympics. Japan's Yuko Nakanishi celebrates her bronze medal in the womens' 200 metres butterfly at the Athens 2004 Olympic Games August 18, 2004. REUTERS/Jerry Lampen 

Japan's bronze medallist Yuko Nakanishi waves to spectators after women's 200 metres butterfly final at Olympics. Japan's bronze medallist Yuko Nakanishi waves to spectators during the awards ceremony after women's 200 metres butterfly final at the Athens 2004 Olympic Games August 18, 2004. Nakanishi won the bronze with a time of two minutes 08.04 seconds. REUTERS/Mike Blake 

Gold medalist Poland's Jedrzejcak greets bronze medalist Japan's Nakanishi after the womens' 200 metres butterfly at the Athens 2004 Olympics. Gold medalist Poland's Otylia Jedrzejcak (L) greets bronze medalist Japan's Yuko Nakanishi after the womens' 200 metres butterfly at the Athens 2004 Olympic Games August 18, 2004. Jedrzejczak won the women's 200 metres butterfly final at the Athens Olympics on Wednesday to become Poland's first Olympic swimming champion. REUTERS/Kai Pfaffenbach 

JAPAN'S YUKO NAKANISHI REACTS AFTER WINNING WOMEN'S 200M FLY FINAL OF JAPAN SWIMMING CHAMPIONSHIPS IN TOKYO. Japan's Yuko Nakanishi reacts after winning the women's 200-metre butterfly final in the 80th Japan Swimming Championships in Tokyo April 24, 2004. Nakanishi set a new Japanese national record of two minutes 07.99 seconds. REUTERS/Kimimasa Mayama 

Japanb's Yuko Nakanishi powers to win the women's 200-metre butterfly final in the 80th Japan Swimming Championships in Tokyo April 24, 2004. Nakanishi set a new Japanese national record of two minutes 07.99 seconds. REUTERS/Kimimasa Mayama KM 

Japanb's Yuko Nakanishi powers to win the women's 200-metre butterfly final in the 80th Japan Swimming Championships in Tokyo April 24, 2004. Nakanishi set a new Japanese national record of two minutes 07.99 seconds. REUTERS/Kimimasa Mayama KM 

JUNKO ONISH OF JAPAN CELEBRATES WIN IN WOMEN'S 100M BUTTERFLY FINAL OF JAPAN SWIMMING CHAMPIONSHIPS IN TOKYO. Junko Onishi (R) celebrates with runner-up Yuko Nakanishi after setting a Japanese national record to win the women's 100-metre butterfly finals in the 80th Japan Swimming Championships in Tokyo April 21, 2004. Onishi finished in 58.62 seconds and Nakanishi, who clocked 59.46 seconds, both qualified for the Athens Olympics in the event. REUTERS/Kimimasa Mayama 

JAPAN'S YUKO NAKANISHI WAVES DURING MEDALS CEREMONY OF 200 METRES
BUTTERFLY FINAL AT THE WORLD SWIMMING CHAMPIONSHIPS. 

Japan's womens 4x100m medley relay team hold their silver medals at the
14th Asian Games in Pusan October 5, 2002. The team of (L-R) Tomoko
Nagai, Yuko Nakanishi, Fumiko Kawanabe and Noriko Inada were beaten to
the gold medal by Asian swimming powerhouse China who set a new Asian
Record with a time of four minutes, 00.21 seconds. REUTERS/Jason Reed

JIR/JS 

Japan's Yuko Nakanishi reacts after setting the fastest time in her
100m butterfly heat at the 14th Asian Games in Pusan October 2, 2002.
Nakanishi qualified for the final with the fastest time in the heats of
one minute 01.16 seconds. REUTERS/Jason Reed

JIR 

Japan's Yuko Nakanishi reacts after winning the gold medal in the
womens 200M butterfly final at the 14th Asian Games in Pusan September
30, 2002. Nakanishi won the gold medal with a time of two minutes 08.99
seconds. REUTERS/Jason Reed REUTERS

JIR 

Japan's Yuko Nakanishi reacts after winning the gold medal in the
womens 200 metre butterfly final at the 14th Asian Games in Pusan
September 30, 2002. Nakanishi won the gold medal with a time of two
minutes 08.99 seconds. REUTERS/Jason Reed

JIR/RCS 

Japan's Maki Mita (Front) and compatriate Yuko Nakanishi swim in their
heats of the women's 200m butterfly on the first day of the swimming
competition at the 14th Asian Games in Pusan September 30, 2002. Mita
set the fastest time in the heats with a time of two minutes 11.57
seconds and Nakanishi set the second fastest time of two minutes 11.66
seconds to both qualify for the final. REUTERS/Jason Reed

JIR/DL 

Japan's Yuko Nakanishi in action during a training session at the Olympic pool in Sydney September 2, 2000. The Games XXVII Olympiad will begin September 15.

GMH/DL