The designer of winning mascots Ryo Taniguchi poses for a photograph during a news conference after Tokyo Olympics organizers unveiled the mascots for the Tokyo 2020 Olympics and Paralympics selected by popular vote by elementary students across Japan at the Hoyonomori Gakuen School in Tokyo, Japan, February 28, 2018. REUTERS/Toru Hanai 

The designer of winning mascots Ryo Taniguchi poses for a photograph during a news conference after Tokyo Olympics organizers unveiled the mascots for the Tokyo 2020 Olympics and Paralympics selected by popular vote by elementary students across Japan at the Hoyonomori Gakuen School in Tokyo, Japan, February 28, 2018. REUTERS/Toru Hanai 

The designer of winning mascots Ryo Taniguchi poses for a photograph during a news conference after Tokyo Olympics organizers unveiled the mascots for the Tokyo 2020 Olympics and Paralympics selected by popular vote by elementary students across Japan at the Hoyonomori Gakuen School in Tokyo, Japan, February 28, 2018. REUTERS/Toru Hanai 

The designer of winning mascots Ryo Taniguchi attends a news conference after Tokyo Olympics organizers unveiled the mascots for the Tokyo 2020 Olympics and Paralympics selected by popular vote by elementary students across Japan at the Hoyonomori Gakuen School in Tokyo, Japan, February 28, 2018. REUTERS/Toru Hanai 

The designer of winning mascots Ryo Taniguchi attends a news conference after Tokyo Olympics organizers unveiled the mascots for the Tokyo 2020 Olympics and Paralympics selected by popular vote by elementary students across Japan at the Hoyonomori Gakuen School in Tokyo, Japan, February 28, 2018. REUTERS/Toru Hanai 

The designer of winning mascots Ryo Taniguchi attends a news conference after Tokyo Olympics organizers unveiled the mascots for the Tokyo 2020 Olympics and Paralympics selected by popular vote by elementary students across Japan at the Hoyonomori Gakuen School in Tokyo, Japan, February 28, 2018. REUTERS/Toru Hanai 

Hinomaru Kotsu Co's President and CEO Kazutaka Tomita (L) and ZMP Inc's CEO Hisashi Taniguchi shake hands next to ZMP's RoboCar MiniVan, a self-driving Toyota Estima Hybrid car, after their joint news conference in Tokyo, Japan June 15, 2017. REUTERS/Toru Hanai 

Japan's sevens women's rugby team players pose for a photo after their training session for the Olympic Games in Kumagaya, Japan January 29, 2016. Players are (front L-R) Noriko Taniguchi, Keiko Kato, Yuki Sue, Raichieru Miyo Bativakalolo, Misaki Suzuki, Yuka Kanematsu, (Rear L-R) Wasana Fukushima, Ano Kuwai, Aya Takeuchi, Makiko Tomita, Maki Takano, Ai Nakamaru, Airi Kitayama, and Ayaka Suzuki. REUTERS/Toru Hanai

Toru Taniguchi of Japan watches his tee shot on the ninth hole during the first round of the WGC-Bridgestone Invitational golf tournament in Akron, Ohio, August 1, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF) 

Toru Taniguchi of Japan tips his cap on the 18th green after finishing his first round of the British Open golf Championship at Muirfield in Scotland July 18, 2013. REUTERS/Brian Snyder (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan putts on the second green during the first round of the British Open golf Championship at Muirfield in Scotland July 18, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan watches his tee shot on the third hole during the first round of the British Open golf Championship at Muirfield in Scotland July 18, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan watches his tee shot on the third hole during a practice round ahead of the British Open golf championship at Muirfield in Scotland July 17, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan tees off on the 12th hole during a practice round ahead of the British Open golf championship at Muirfield in Scotland July 16, 2013. REUTERS/Russell Cheyne (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan watches his tee shot on the fourth hole during a practice round ahead of the British Open golf championship at Muirfield in Scotland July 16, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan reacts after putting on the second green during a practice round ahead of the British Open golf championship at Muirfield in Scotland July 15, 2013. REUTERS/Russell Cheyne (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan hits out of the rough on the second hole during a practice round ahead of the British Open golf championship at Muirfield in Scotland July 15, 2013. REUTERS/Russell Cheyne (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan tees off on the fifth hole during a practice round ahead of the British Open golf championship at Muirfield in Scotland July 15, 2013. REUTERS/Russell Cheyne (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan hits his tee shot on the second hole during a practice round ahead of the British Open golf championship at Royal Lytham & St Annes, northern England July 18, 2012. REUTERS/Brian Snyder (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan watches his shot on the 15th hole during a practice round ahead of the British Open golf championship at Royal Lytham and St Annes, northern England July 17, 2012. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan watches his shot on the fourth hole during a practice round ahead of the British Open golf championship at Royal Lytham and St Annes, northern England July 17, 2012. REUTERS/Cathal McNaughton (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan watches his tee shot on the fifth hole during a practice round ahead of the British Open golf championship at Royal Lytham and St Annes, northern England July 17, 2012. REUTERS/Cathal McNaughton (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan watches his tee shot on the second hole during a practice round ahead of the British Open golf championship at Royal Lytham and St Annes, northern England July 16, 2012. REUTERS/Brian Snyder (BRITAIN - Tags: SPORT GOLF)

Toru Taniguchi of Japan tees off on the second hole during the first round for the 2012 U.S. Open golf tournament on the Lake Course at the Olympic Club in San Francisco, California June 14, 2012. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

Japan's Toru Taniguchi tees off on the third hole during a practice round for the 2012 U.S. Open golf tournament on the Lake Course at the Olympic Club in San Francisco, California June 13, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: SPORT GOLF)

Japan's Toru Taniguchi tees off on the second hole during a practice round for the 2012 U.S. Open golf tournament on the Lake Course at the Olympic Club in San Francisco, California June 13, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: SPORT GOLF)

Japan's Toru Taniguchi tees off on the 10th hole during a practice round for the 2012 U.S. Open golf tournament on the Lake Course at the Olympic Club in San Francisco, California June 12, 2012. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

Toru Taniguchi of Japan hits his tee shot on the second hole during third round play at the British Open golf championship on the Old Course in St. Andrews, Scotland, July 17, 2010. REUTERS/Russell Cheyne (BRITAIN - Tags: SPORT GOLF) 

Toru Taniguchi of Japan hits his tee shot on the 10th hole during third round play at the British Open golf championship on the Old Course in St. Andrews, Scotland, July 17, 2010. REUTERS/David Moir (BRITAIN - Tags: SPORT GOLF) 

Toru Taniguchi of Japan hits his tee shot on the second hole during third round play at the British Open golf championship on the Old Course in St. Andrews, Scotland, July 17, 2010. REUTERS/Phil Noble (BRITAIN - Tags: SPORT GOLF) 

Toru Taniguchi of Japan hits his tee shot on the 10th hole during first round play at the British Open golf championship on the Old Course in St. Andrews, Scotland, July 15, 2010. REUTERS/Russell Cheyne (BRITAIN - Tags: SPORT GOLF) 

Toru Taniguchi of Japan hits off the 13th tee during the first round of the U.S. Open Golf Championship in Pebble Beach, California, June 17, 2010. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF) 

Toru Taniguchi of Japan hits out of the bunker on the 17th hole during a practice round for the U.S. Open Golf Championship in Pebble Beach, California, June 16, 2010. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF) 

Toru Taniguchi of Japan tees off the 18th tee during a practice round for the U.S. Open Golf Championship in Pebble Beach, California, June 15, 2010. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF) 

Members of the Asia team pose with their trophy after winning the Royal Trophy golf tournament against Europe in Chonburi province, near Bangkok, January 11, 2009. From L-R: (bottom row) Thongchai Jidee of Thailand, S.K. Ho of South Korea and Charlie Wi of South Korea; (middle row) Toru Taniguchi of Japan, Prayad Marksaeng of Thailand, captain Joe Ozaki of Japan and Ryo Ishikawa of Japan; (top row) Hideto Tanihara of Japan and Liang Wen-chong of China. REUTERS/Sukree Sukplang (THAILAND) 

Members of the Asia team pose with their trophy after winning the Royal Trophy golf tournament against Europe in Chonburi province, near Bangkok, January 11, 2009. From L-R: (bottom row) Thongchai Jidee of Thailand, captain Joe Ozaki of Japan ,Ryo Ishikawa of Japan and Charlie Wi of South Korea; (top row) Toru Taniguchi of Japan, Prayad Marksaeng of Thailand, S.K. Ho of South Korea, Hideto Tanihara of Japan and Liang Wen-chong of China. REUTERS/Sukree Sukplang (THAILAND) 

Members of the Asia team pose with their trophy after winning the Royal Trophy golf tournament against Europe in Chonburi province, near Bangkok, January 11, 2009. From L-R: (bottom row) Thongchai Jidee of Thailand, S.K. Ho of South Korea and Charlie Wi of South Korea; (middle row) Toru Taniguchi of Japan, Prayad Marksaeng of Thailand, captain Joe Ozaki of Japan and Ryo Ishikawa of Japan; (rear row) Hideto Tanihara of Japan and Liang Wen-chong of China. REUTERS/Sukree Sukplang (THAILAND) 

Members of the Asia team pose with their trophy after winning the Royal Trophy golf tournament against Europe in Chonburi province, near Bangkok, January 11, 2009. From L-R: (bottom row) Thongchai Jidee of Thailand and S.K. Ho of South Korea; (middle row) Toru Taniguchi of Japan, Prayad Marksaeng of Thailand, captain Joe Ozaki of Japan, Ryo Ishikawa of Japan and Charlie Wi of South Korea; (rear) Hideto Tanihara of Japan and Liang Wen-chong of China. REUTERS/Sukree Sukplang (THAILAND) 

Asia's Toru Taniguchi of Japan tees off on the third hole during the second day of foursomes matches against Europe at the Royal Trophy golf tournament in Chonburi province, near Bangkok, January 10, 2009. REUTERS/Sukree Sukplang (THAILAND) 

Asia's Toru Taniguchi of Japan tees off on the second hole during foursomes competition against Europe at the Royal Trophy golf tournament in Chonburi province, near Bangkok, January 9, 2009. REUTERS/Sukree Sukplang (THAILAND) 

Ryuji Imada (R) of Japan acknowledges applause from spectators next to team mate Toru Taniguchi after Imada hits the ball from a bunker into the 15th hole during the last round of the World Cup golf tournament in Dongguan November 30, 2008. REUTERS/Bobby Yip (CHINA) 

Ryuji Imada (R) of Japan celebrates with team mate Toru Taniguchi after Imada hits the ball from a bunker into the 15th hole during the last round of the World Cup golf tournament in Dongguan November 30, 2008. REUTERS/Bobby Yip (CHINA) 

Ryuji Imada (R) of Japan acknowledges applause from spectators next to team mate Toru Taniguchi after Imada hits the ball from a bunker into the 15th hole during the last round of the World Cup golf tournament in Dongguan November 30, 2008. REUTERS/Bobby Yip (CHINA) 

Toru Taniguchi (L) of Japan watches as teammate Ryuji Imada putts on the ninth green during the second round of the World Cup golf tournament in Dongguan, southern China November 29, 2008. REUTERS/Bobby Yip (CHINA) 

Ryuji Imada (L) and Toru Taniguchi of Japan celebrate after putting on the ninth green during the second round of the World Cup golf tournament in Dongguan, southern China November 27, 2008. REUTERS/Bobby Yip (CHINA) 

Toru Taniguchi of Japan hits on the first fairway during the first round of the World Cup golf tournament in Dongguan, southern China November 27, 2008. REUTERS/Bobby Yip (CHINA) 

Ryuji Imada (L) and Toru Taniguchi of Japan walk down the first fairway during the first round of the World Cup golf tournament in Dongguan, southern China November 27, 2008. REUTERS/Bobby Yip (CHINA) 

Toru Taniguchi of Japan watches his shot on the second tee during a practice round for the PGA Championship golf tournament at the Oakland Hills Country Club in Bloomfield Township, Michigan August 6, 2008. Play in the 90th PGA Championship begins on August 7. REUTERS/Mike Cassese (UNITED STATES) 

Toru Taniguchi (L) and Ryuji Imada (R) of Japan talk as they walk between holes during the final day of practice ahead of the 2008 British Open Golf Championship at Royal Birkdale, England, July 16, 2008. REUTERS/Darren Staples (BRITAIN) 

Toru Taniguchi (R) and Ryuji Imada (L) of Japan talk as they walk between holes during the final day of practice ahead of the 2008 British Open Golf Championship at Royal Birkdale, England, July 16, 2008. REUTERS/Darren Staples (BRITAIN) 

Japan's players pose before their U-23 international friendly soccer match against Cameroon in Tokyo June 12, 2008. From L-R: (front row) Tsukasa Umesaki, Takayuki Morimoto, Yohei Kajiyama, Takuya Honda and Hiroki Mizumoto; (rear row) Shusaku Nishikawa, Masato Morishige, Yusuke Tanaka, Hiroyuki Taniguchi, Maya Yoshida and Keisuke Honda. REUTERS/Toru Hanai (JAPAN) (BEIJING OLYMPICS 2008 PREVIEW) 

Japan's Hiroyuki Taniguchi (L), Cameroon's Etienee Pokong (bottom) and Georges Ndoum fight for the ball during their U-23 international friendly soccer match in Tokyo June 12, 2008. REUTERS/Toru Hanai (JAPAN) (BEIJING OLYMPICS 2008 PREVIEW) 

Japan's Hiroyuki Taniguchi (L), Cameroon's Etienee Pokong (bottom) and Georges Ndoum fight for the ball during their U-23 international friendly soccer match in Tokyo June 12, 2008. REUTERS/Toru Hanai (JAPAN) (BEIJING OLYMPICS 2008 PREVIEW) 

Japan's Hiroyuki Taniguchi (L) and Cameroon's Nicolas Nkoulou fight for the ball during their U-23 international friendly soccer match in Tokyo June 12, 2008. REUTERS/Toru Hanai (JAPAN) (BEIJING OLYMPICS 2008 PREVIEW) 

Japan's Hiroyuki Taniguchi (R) and Cameroon's goalkeeper Joslain Mayebi fight for the ball during their U-23 international friendly soccer match in Tokyo June 12, 2008. REUTERS/Toru Hanai (JAPAN) (BEIJING OLYMPICS 2008 PREVIEW) 

Toru Taniguchi of Japan hits off the second tee during a practice round for the U.S. Open golf championship at Torrey Pines in San Diego, June 10, 2008. REUTERS/Robert Galbraith (UNITED STATES) 

Toru Taniguchi of Japan gestures to his playing partners on the first hole during a practice round for the 108th U.S. Open Championship golf tournament at Torrey Pines in San Diego June 9, 2008. REUTERS/Robert Galbraith (UNITED STATES) 

Ryuji Imada and Toru Taniguchi of Japan (R) walk to the green on the first hole during a practice round for the 108th U.S. Open Championship golf tournament at Torrey Pines in San Diego June 9, 2008. REUTERS/Matt Sullivan (UNITED STATES) 

Toru Taniguchi of Japan watches his tee shot on the first hole during a practice round for the 108th U.S. Open Championship golf tournament at Torrey Pines in San Diego June 9, 2008. REUTERS/Matt Sullivan (UNITED STATES) 

Toru Taniguchi of Japan chips to the 17th green during the first round of the 2008 Masters golf tournament at the Augusta National Golf Club in Augusta, Georgia, April 10, 2008. REUTERS/Mike Blake (UNITED STATES)