SWIMMER
Yasuhiro Koseki
1992 - Today

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. He hold the Asian record in this event, set in February 2014. 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. Read more on Wikipedia
His biography is available in 16 different languages on Wikipedia. Yasuhiro Koseki is the 767th most popular swimmer (down from 413th in 2024), the 5,569th most popular biography from Japan (down from 3,021st in 2019) and the 40th most popular Japanese Swimmer.
Memorability Metrics
Page views of Yasuhiro Koseki by language
Among SWIMMERS
Among swimmers, Yasuhiro Koseki ranks 767 out of 709. Before him are Clara Basiana, Manuel Frigo, Duncan Scott, Louise Hansson, Matthew Abood, and Hugo González. After him are Rebecca Adlington, Yan Zibei, Maria Ugolkova, Martin Malyutin, Simone Manuel, and Marco Orsi.
Most Popular Swimmers in Wikipedia
Go to all RankingsClara Basiana
1991 - Present
HPI: 32.65
Rank: 761
Manuel Frigo
1997 - Present
HPI: 32.65
Rank: 762
Duncan Scott
1997 - Present
HPI: 32.64
Rank: 763
Louise Hansson
1996 - Present
HPI: 32.63
Rank: 764
Matthew Abood
1986 - Present
HPI: 32.63
Rank: 765
Hugo González
1999 - Present
HPI: 32.63
Rank: 766
Yasuhiro Koseki
1992 - Present
HPI: 32.62
Rank: 767
Rebecca Adlington
1989 - Present
HPI: 32.60
Rank: 768
Yan Zibei
1995 - Present
HPI: 32.60
Rank: 769
Maria Ugolkova
1989 - Present
HPI: 32.59
Rank: 770
Martin Malyutin
1999 - Present
HPI: 32.58
Rank: 771
Simone Manuel
1996 - Present
HPI: 32.57
Rank: 772
Marco Orsi
1990 - Present
HPI: 32.49
Rank: 773
Contemporaries
Among people born in 1992, Yasuhiro Koseki ranks 1,445. Before him are Ramón Arias, Carlos Llavador, Mikalay Signevich, Jeremy Lamb, Kenki Fukuoka, and Mardik Mardikian. After him are Makito Ito, Sean Couturier, Robbie Brady, Elena Nikitina, Lucas Tavares, and Koen Metsemakers.
Others Born in 1992
Go to all RankingsRamón Arias
SOCCER PLAYER
1992 - Present
HPI: 32.67
Rank: 1,440
Carlos Llavador
FENCER
1992 - Present
HPI: 32.67
Rank: 1,441
Mikalay Signevich
SOCCER PLAYER
1992 - Present
HPI: 32.66
Rank: 1,442
Jeremy Lamb
BASKETBALL PLAYER
1992 - Present
HPI: 32.65
Rank: 1,443
Kenki Fukuoka
RUGBY PLAYER
1992 - Present
HPI: 32.64
Rank: 1,444
Mardik Mardikian
SOCCER PLAYER
1992 - Present
HPI: 32.63
Rank: 1,445
Yasuhiro Koseki
SWIMMER
1992 - Present
HPI: 32.62
Rank: 1,446
Makito Ito
SOCCER PLAYER
1992 - Present
HPI: 32.61
Rank: 1,447
Sean Couturier
HOCKEY PLAYER
1992 - Present
HPI: 32.60
Rank: 1,448
Robbie Brady
SOCCER PLAYER
1992 - Present
HPI: 32.58
Rank: 1,449
Elena Nikitina
POLITICIAN
1992 - Present
HPI: 32.58
Rank: 1,450
Lucas Tavares
SOCCER PLAYER
1992 - Present
HPI: 32.57
Rank: 1,451
Koen Metsemakers
ATHLETE
1992 - Present
HPI: 32.57
Rank: 1,452
In Japan
Among people born in Japan, Yasuhiro Koseki ranks 5,582 out of 6,245. Before him are Kohei Yamada (1989), Yuki Shimada (1986), Kenki Fukuoka (1992), Takamasa Sakai (1988), Kai Shibato (1995), and Tomoyuki Suzuki (1985). After him are Makito Ito (1992), Naoki Yuasa (1983), Desheun Ryo Yamakawa (1997), William Popp (1994), Yuto Suzuki (1993), and Kei Koizumi (1995).
Others born in Japan
Go to all RankingsKohei Yamada
SOCCER PLAYER
1989 - Present
HPI: 32.66
Rank: 5,576
Yuki Shimada
SOCCER PLAYER
1986 - Present
HPI: 32.65
Rank: 5,577
Kenki Fukuoka
RUGBY PLAYER
1992 - Present
HPI: 32.64
Rank: 5,578
Takamasa Sakai
SOCCER PLAYER
1988 - Present
HPI: 32.64
Rank: 5,579
Kai Shibato
SOCCER PLAYER
1995 - Present
HPI: 32.63
Rank: 5,580
Tomoyuki Suzuki
SOCCER PLAYER
1985 - Present
HPI: 32.63
Rank: 5,581
Yasuhiro Koseki
SWIMMER
1992 - Present
HPI: 32.62
Rank: 5,582
Makito Ito
SOCCER PLAYER
1992 - Present
HPI: 32.61
Rank: 5,583
Naoki Yuasa
SKIER
1983 - Present
HPI: 32.61
Rank: 5,584
Desheun Ryo Yamakawa
SOCCER PLAYER
1997 - Present
HPI: 32.60
Rank: 5,585
William Popp
SOCCER PLAYER
1994 - Present
HPI: 32.60
Rank: 5,586
Yuto Suzuki
SOCCER PLAYER
1993 - Present
HPI: 32.59
Rank: 5,587
Kei Koizumi
SOCCER PLAYER
1995 - Present
HPI: 32.59
Rank: 5,588
Among SWIMMERS In Japan
Among swimmers born in Japan, Yasuhiro Koseki ranks 40. Before him are Ippei Watanabe (1997), Yasuko Tajima (1981), Jay Litherland (1995), Masato Sakai (1995), Rikako Ikee (2000), and Junya Koga (1987). After him are Kanako Watanabe (1996), Haruka Ueda (1988), Aika Hakoyama (1991), Ryo Tateishi (1989), Kei Marumo (1992), and Yuka Kato (1986).
Ippei Watanabe
1997 - Present
HPI: 34.75
Rank: 34
Yasuko Tajima
1981 - Present
HPI: 34.15
Rank: 35
Jay Litherland
1995 - Present
HPI: 34.02
Rank: 36
Masato Sakai
1995 - Present
HPI: 34.02
Rank: 37
Rikako Ikee
2000 - Present
HPI: 33.21
Rank: 38
Junya Koga
1987 - Present
HPI: 33.06
Rank: 39
Yasuhiro Koseki
1992 - Present
HPI: 32.62
Rank: 40
Kanako Watanabe
1996 - Present
HPI: 32.38
Rank: 41
Haruka Ueda
1988 - Present
HPI: 32.34
Rank: 42
Aika Hakoyama
1991 - Present
HPI: 31.83
Rank: 43
Ryo Tateishi
1989 - Present
HPI: 31.71
Rank: 44
Kei Marumo
1992 - Present
HPI: 31.65
Rank: 45
Yuka Kato
1986 - Present
HPI: 31.46
Rank: 46














































