YAMAGUCHI Kosei

Asian Games

Year	Location	3000m SC
2018	Indonesia	9th (8:47.41)

Asian Championships

Year	Location	3000m SC
2019	Doha, QAT	5th (8:47.07)
2017	Bhubaneswar, IND	5th (8:58.58)

World Athletics Continental Tour - Ten best performances since 2020

Rank	Year	Event	Competition	Location	Result
3	2021	3000m Steeplechase	World Athletics Continental Tour	Tokyo, JPN	8:22.39

World Challenge - Ten best performances since 2020

Rank	Year	Event	Competition	Location	Result
7	2017	3000m Steeplechase	World Challenge	Kawasaki, JPN	8:43.24
10	2019	3000m Steeplechase	World Challenge	Osaka, JPN	8:41.20

World Cross Country Championships

Rank	Event	Year	Location	Result
14	Team Cross Country Long Distance	2019	Aarhus, DEN	297
15	Team Cross Country Long Distance	2017	Kampala, UGA	338
71	Individual Cross Country Long Distance	2017	Kampala, UGA	31:49
80	Individual Cross Country Long Distance	2019	Aarhus, DEN	35:04

Legend
SF - Semifinal, QF - Quarterfinal, 1R - 1st Round, Qual. - Qualification, QR - Qualification Round, DNF - Did Not Finish, DNS - Did Not Start, DQ - Disqualified, NM - No Mark, [Relay athlete without time] - Did not run in final

Athlete, Office Worker

Josai University, Sakado, JPN

Japanese

Aisan Long Distance Team [Japan]

Masatoshi Ibata [club], JPN

He was sidelined for one year due to a fracture in grade 10 of high school. (4years.asahi.com, 21 Apr 2021)

He took up the sport in grade five of primary school in Chita, Japan and began focusing on the 3000m steeplechase in grade 11 of high school. (kamiya-a.cocolog-nifty.com, 29 Jun 2021; 4years.asahi.com, 21 Apr 2021; jfa.jp, 18 Nov 2019)

He was invited to join an athletics team by his friend. As he liked jumping, he originally competed in high jump. However, when he was defeated by his teammates, he decided to switch to long-distance running events in grade seven of middle school. He then became fascinated by the 3000m steeplechase after he watched two senior students compete at the Inter-High School Athletics Championships. (4years.asahi.com, 21 Apr 2021)

To compete at the 2020 Olympic Games in Tokyo. (Instagram profile, 06 Jul 2021)

In 2020 he received the Chubu Region Industrial Track and Field Association Athlete of the Year Award in Japan. (chubu.jita-trackfield.jp, 30 Apr 2021)