Kazuma Ōseto

Kazuma Oseto
Personal information
Nationality	Japan
Born	5 August 1994 (age 30); Kanda, Miyako District, Fukuoka
Height	1.79 m (5 ft 10 in)
Weight	70 kg (154 lb)
Sport
Sport	Running
Event(s)	100 metres, 200 metres
University team	Hosei University
Club	Yaskawa Electric Track and field
Achievements and titles
Personal best(s)	100 m: 10.19 (Hiratsuka 2016); 200 m: 20.55 (Yokohama 2016); 60 m: 6.71 (Osaka 2013)
Medal record
Men's athletics
Representing Japan
World Relays
World Junior Championships
World Youth Championships
Summer Universiade
Asian Championships
East Asian Games

Kazuma Ōseto (大瀬戸一馬, Ōseto Kazuma, born 5 August 1994) is a Japanese sprinter.

Personal bests

Event	Time	Wind	Venue	Date
Outdoor
100 m	10.19 s	+1.7 m/s	Hiratsuka, Japan	11 June 2016
200 m	20.55 s	+0.6 m/s	Yokohama, Japan	22 May 2016
Indoor
60 m	6.71 s		Osaka, Japan	2 February 2013

100 metres
- Former Japanese junior and Japanese high school record holder - 10.23 s (wind: +1.3 m/s) (Hiroshima, 29 April 2012)
4×100 m relay
- Current Asian and Japanese junior record holder - 39.01 s (relay leg:1st) (Barcelona, 13 July 2012)^[a]
- Current Japanese university record holder - 38.44 s (relay leg:4th) (Tianjin, 9 October 2013)^[b]
- Current Japanese high school record holder - 39.16 s (relay leg: 1st) (Fukuroi, 3 May 2012)^[c]
Medley relay (100m×200m×300m×400m)
- Former Japanese youth best holder - 1:50.69 s (relay leg: 1st) (Lille, 10 July 2011)^[d]
60 metres (Indoor)
- Former Japanese junior record holder - 6.71 s (Osaka, 2 February 2013)

^b with Ryōta Yamagata, Shōta Iizuka, and Asuka Cambridge

^c with Akiyuki Hashimoto, Tatsurō Suwa, and Kazuki Kanamori

^d with Akiyuki Hashimoto, Shōtarō Aikyō, and Takuya Fukunaga

Year	Competition	Venue	Position	Event	Notes
Representing Japan
2011	World Youth Championships	Lille, France	2nd	100 m	10.52 (wind: -0.3 m/s)
2011	World Youth Championships	Lille, France	2nd	Medley relay	1:50.69 (relay leg: 1st) NYB
2012	World Junior Championships	Barcelona, Spain	16th (sf)	100 m	10.56 (wind: -0.5 m/s)
2012	World Junior Championships	Barcelona, Spain	3rd	4×100 m relay	39.02 (relay leg: 1st)
2013	Asian Championships	Pune, India	2nd	4×100 m relay	39.11 (relay leg: 2nd)
	East Asian Games	Tianjin, China	3rd	100 m	10.48 (wind: -0.1 m/s)
	East Asian Games	Tianjin, China	1st	4×100 m relay	38.44 (relay leg: 4th) GR, NUR
2014	World Relays	Nassau, Bahamas	5th	4×100 m relay	38.40 (relay leg: 1st)
2014	Continental Cup	Marrakech, Morocco	4th	4×100 m relay	39.50 (relay leg: 1st)^[2]
2015	World Relays	Nassau, Bahamas	3rd	4×100 m relay	38.20 (relay leg: 1st)
	Asian Championships	Wuhan, China	9th (sf)	100 m	10.45 (wind: +0.8 m/s)
	Asian Championships	Wuhan, China	3rd	4×400 m relay	3:03.47 (relay leg: 3rd)
	Universiade	Gwangju, South Korea	1st	4×100 m relay	39.08 (relay leg: 1st)
	World Championships	Beijing, China	10th (h)	4×100 m relay	38.60 (relay leg: 1st)

Year	Competition	Venue	Position	Event	Notes
2013	Japan Championships	Chōfu, Tokyo	6th	100 m	10.36 (wind: +0.7 m/s)
2013	Japan Championships	Yokohama, Kanagawa	3rd	4×100 m relay	39.57 (relay leg: 2nd)^[3]
2014	Japan Championships	Fukushima, Fukushima	4th	100 m	10.35 (wind: +0.6 m/s)
2014	Japan Championships	Yokohama, Kanagawa	1st	4×100 m relay	38.81 (relay leg: 2nd)^[3] GR
2015	Japan Championships	Niigata, Niigata	8th	100 m	10.55 (wind: -0.9 m/s)
2015	Japan Championships	Yokohama, Kanagawa	1st	4×100 m relay	38.79 (relay leg: 2nd)^[3] GR
2016	Japan Championships	Nagoya, Aichi	4th	100 m	10.41 (wind: -0.3 m/s)
		Nagoya, Aichi	5th	200 m	20.72 (wind: +1.8 m/s)
		Yokohama, Kanagawa	1st	4×100 m relay	38.89 (relay leg: 2nd)^[3]
2017	Japan Championships	Osaka, Osaka	25th (h)	100 m	10.55 (wind: -0.6 m/s)