Yasuhiro Koseki

Yasuhiro Koseki (小関也朱篤, Koseki Yasuhiro, born March 14, 1992) is a Japanese competitive swimmer and breaststroke specialist. He won the 100-meter event at the 2013 Summer Universiade, 2013 East Asian Games, and the 2014 Pan Pacific Swimming Championships.[2][3] He hold the Asian record in this event, set in February 2014.[4]

Yasuhiro Koseki
Personal information
Full nameYasuhiro Koseki
National team Japan
Born (1992-03-14) March 14, 1992
Tsuruoka, Yamagata, Japan[1]
Height1.86 m (6 ft 1 in)
Weight82 kg (181 lb)
Sport
SportSwimming
StrokesBreaststroke
ClubMiki House
Medal record
Men's swimming
Representing  Japan
World Championships
2017 Budapest 200 m breaststroke
World Championships (SC)
2018 Hangzhou100 m breaststroke
2018 Hangzhou4×100 m medley
Pan Pacific Championships
2014 Gold Coast 100 m breaststroke
2014 Gold Coast 200 m breaststroke
2018 Tokyo 100 m breaststroke
2014 Gold Coast 4×100 m medley
2018 Tokyo 4×100 m medley
2018 Tokyo 4×100 m mixed medley
Asian Games
2018 Jakarta 50 m breaststroke
2018 Jakarta 100 m breaststroke
2018 Jakarta 200 m breaststroke
2014 Incheon 50 m breaststroke
2014 Incheon 100 m breaststroke
2014 Incheon 4×100 m medley
2018 Jakarta 4×100 m medley
2018 Jakarta 4×100 m mixed medley
2014 Incheon 200 m breaststroke
Universiade
2013 Kazan 100 m breaststroke
2013 Kazan 4×100 m medley
East Asian Games
2013 Tianjin 100 m breaststroke
2013 Tianjin 4×100 m medley

Since 2010 Koseki studied at the Nippon Sport Science University, where he first specialized in the freestyle, and only later changed to breaststroke, motivated by Kosuke Kitajima.

References
  1. Swimming. joc.or.jp
  2. Yasuhiro Koseki Clears Nic Fink For 200 Breast Triumph (Pan Pacific Championships, Results). 24 August 2014swimmingworldmagazine.com
  3. 小関也朱篤100平Ｖ　北島後継お家芸守る. nikkansports.com (August 23, 2014)
  4. Braden Keith (February 15, 2014) National, Asian Records Fall on Day 1 of 2014 Japanese SC Championships. swimswam.com


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