Scroll for more


JapanJapan, JPN


Further Personal Information

Date of birth
24 May 1994
174 cm
Wife Yuka Mabuchi, two daughters Yuwa [2018] and Nowa [2020]
Higher education
Sports Science - Waseda University: Tokyo, JPN

Sport Specific Information

When and where did you begin this sport?
He began the sport at age five.
Why this sport?
He took up both football and swimming as a child, but thought swimming was more interesting.
Name of coach
Norimasa Hirai [national], JPN; Ryuichiro Ura [personal], JPN
Training Regime
His training sessions include running and boxercise.

General Interest

Watching films. (Facebook page, 25 May 2020)
Most influential person in career
His family. (, 24 Aug 2018)
Hero / Idol
Japanese swimmer Kosuke Hagino. (Swimming Magazine, 11 Apr 2013)
He withdrew from the 200m individual medley at the 2019 National Short Course Championships in Japan due to a left knee injury. (, 28 Oct 2019;, 27 Oct 2019)

In September 2015 he underwent surgery on both of his heels. He returned to competition in January 2016. (, 17 Jan 2016;, 15 Sep 2015)
Awards and honours
He was named Asian Male Swimmer of the Year by SwimSwam in 2018 and 2019. (, 25 Dec 2019)

He was presented with a Special Citation Award at the 2018 Japan Aquatics Awards. (, 29 Jan 2019)

He received an Excellence Award at the 2016 and 2018 Japan Aquatics Awards. (, 30 Jan 2017;, 29 Jan 2019)

He received an Honorary Prize at the 2014 Saitama Prefecture Sports Awards in Japan. (, 16 Mar 2015)

In 2013 he received a Special Award at the 63rd Japan Sports Awards. (, 18 Jan 2014)

In 2013 he received the Moroyama Town Special Merit Award in Japan. (, 24 Sep 2013)

He received an Excellence Award at the 2013 Japanese Olympic Committee [JOC] Awards. (, 08 Sep 2015)
He became the first swimmer representing Japan to successfully defend his world long course title when he followed up his victory in the 400m individual medley at the 2013 World Championships in Barcelona, Spain, with a win in the same event at the 2015 edition of the tournament in Kazan, Russian Federation. (, 10 Aug 2015; SportsDeskOnline, 09 Aug 2015)
Famous relatives
His wife Yuka Mabuchi has represented Japan in diving. She won silver medals in women's 3m springboard synchro and 10m platform synchro at the 2012 Asian Championships in Dubai, United Arab Emirates. His father-in-law Suei Mabuchi is a diving coach, and served as a coach of the Japanese national team at the 2016 Olympic Games in Rio de Janeiro. (, 16 Aug 2016;, 09 Oct 2020;, 25 May 2017; SportsDeskOnline, 27 Jan 2020)
To win gold medals in the 200m and 400m individual medley events at the 2020 Olympic Games in Tokyo. (, 11 Dec 2018;, 24 Aug 2018;, 04 Aug 2019)
Other information
In October 2020 he was suspended for the remainder of the year by the Japan Swimming Federation after he was found to have had an extramarital affair. The offence was determined to have breached the governing body's standard of sportsmanlike conduct. He also resigned as captain of the Japanese national swimming team and from his role as a symbol athlete for the Japanese Olympic Committee [JOC]. "I think my apology is to continue swimming, restoring the trust of my family, who have been deeply hurt by my irresponsible behaviour. I would like to seriously face swimming with the determination to start over so that my family and everyone will recognise me as a swimmer again." (, 14 Oct 2020;, 14 Oct 2020;, 23 Sep 2020;, 30 Sep 2020;, 14 Oct 2020)

He began wearing a mouth guard for braces to straighten his teeth in 2018. He says the braces help him to use his strength more smoothly while swimming. "I usually felt pain in my neck when I started a race. Therefore I began wearing braces in order to prevent it." (, 31 Mar 2019)