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Masashi Eriguchi
	Eriguchi at the 2010 Japan Championship
Personal information
Nationality	Japan
Born	17 December 1988 (age 36); Kikuchi, Kumamoto, Japan
Alma mater	Waseda University
Height	1.70 m (5 ft 7 in)
Weight	62 kg (137 lb)
Sport
Sport	Track and field
Event	100 metres
Retired	2018
Achievements and titles
Personal best(s)	100 m: 10.07 (Hiroshima 2009); 200 m: 20.80 (Fukuroi 2012); 60 m: 6.73 (Hangzhou 2014)
Medal record
Men's athletics
Representing Japan
Asian Championships
Universiade

Masashi Eriguchi (江里口匡史, Eriguchi Masashi, born 17 December 1988 in Kikuchi, Kumamoto) is a retired Japanese sprinter who specialized in the 100 metres.

He won the bronze medal at the 2009 Summer Universiade and a gold medal in relay at the 2009 Asian Championships. At the 2009 World Championships, he finished fourth in the relay.^{[citation needed]} He also competed in the 100 metres. He reached the semi-final at the 2010 World Indoor Championships.^[1]

His personal best times are 6.75 seconds in the 60 metres (indoor), achieved at the 2010 World Indoor Championships in Doha; 10.07 seconds in the 100 metres, achieved in June 2009 in Hiroshima; and 20.88 seconds in the 200 metres, achieved in October 2008 in Ōita.^[1]

He retired in 2018.^[2]

Personal bests

Event	Time (s)	Wind (m/s)	Competition	Venue	Date	Notes
Outdoor
100 m	10.07	+1.9	Japan Championship	Hiroshima, Japan	28 June 2009	Japan's 9th-fastest time
200 m	20.80	+1.0	Shizuoka International Meet	Fukuroi, Japan	03 MAY 2012
Indoor
60 m	6.73	n/a	Japan Junior Indoor Meet	Hangzhou, China	15 February 2014

Records

4 × 200 m relay
- Former Japanese and Japanese university record holder - 1:22.67 s (relay leg: 1st) (Yokohama, 27 September 2008)^[a]

^a with Yukio Yanai, Hiroshi Kihara, and Shintarō Kimura

Competition record

Year	Competition	Venue	Position	Event	Notes
Representing Japan
2007	Universiade	Bangkok, Thailand	4th (h)	4 × 100 m relay	39.98 (relay leg: 4th)^[3]
2009	Universiade	Belgrade, Serbia	3rd	100 m	10.33 (wind: -0.7 m/s)
	Universiade	Belgrade, Serbia	– (h)	4 × 100 m relay	DQ (relay leg: 1st)
	World Championships	Berlin, Germany	36th (qf)	100 m	10.45 (wind: -0.7 m/s)
	World Championships	Berlin, Germany	4th	4 × 100 m relay	38.30 (relay leg: 1st)
	Asian Championships	Guangzhou, China	21st (h)	100 m	10.82 (wind: -1.0 m/s)
	Asian Championships	Guangzhou, China	1st	4 × 100 m relay	39.01 (relay leg: 1st)
2010	World Indoor Championships	Doha, Qatar	21st (sf)	60 m	6.77
	Asian Games	Guangzhou, China	15th (sf)	100 m	10.56 (wind: +0.9 m/s)
	Asian Games	Guangzhou, China	10th (h)	4 × 100 m relay	47.14 (relay leg: 1st)
2011	Asian Championships	Kobe, Japan	2nd	100 m	10.28 (wind: +1.8 m/s)
2011	Asian Championships	Kobe, Japan	1st	4 × 100 m relay	39.18 (relay leg: 2nd)
2012	Olympic Games^[4]	London, United Kingdom	31st (h)	100 m	10.30 (wind: +0.7 m/s)
2012	Olympic Games^[4]	London, United Kingdom	4th	4 × 100 m relay	38.35 (relay leg: 2nd)
2014	Asian Indoor Championships	Hangzhou, China	4th	60 m	6.73
2014	World Relays	Nassau, Bahamas	9th (h)	4 × 200 m relay	1:23.87 (relay leg: 2nd)

National Championship

Year	Competition	Venue	Position	Event	Notes
2007	Japan Championships	Osaka, Osaka	5th	100 m	10.53 (wind: -0.3 m/s)
2008	Japan Championships	Kawasaki, Kanagawa	7th	100 m	10.61 (wind: -0.3 m/s)
2008	Japan Championships	Yokohama, Kanagawa	1st	4 × 100 m relay	38.97 (relay leg: 1st)^[5] GR
2009	Japan Championships	Hiroshima, Hiroshima	1st	100 m	10.14 (wind: +1.9 m/s)
2010	Japan Championships	Marugame, Kagawa, Kagawa	1st	100 m	10.26 (wind: 0.0 m/s)
2011	Japan Championships	Kumagaya, Saitama	1st	100 m	10.38 (wind: -0.5 m/s)
2012	Japan Championships	Osaka, Osaka	1st	100 m	10.29 (wind: 0.0 m/s)
2013	Japan Championships	Chōfu, Tokyo	9th (h)	100 m	10.42 (wind: +0.3 m/s)
2014	Japan Championships	Fukushima, Fukushima	6th	100 m	10.37 (wind: +0.6 m/s)