# Masashi Eriguchi

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. He also competed in the 100 metres. He reached the semi-final at the 2010 World Indoor Championships.
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.
He retired in 2018.

## 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)
    $^a$ 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) |
| 2009 | Universiade | Belgrade, Serbia | 3rd | 100 m | 10.33 (wind: -0.7 m/s) |
| 2009 | Universiade | Belgrade, Serbia | – (h) | 4 × 100 m relay | DQ (relay leg: 1st) |
| 2009 | World Championships | Berlin, Germany | 36th (qf) | 100 m | 10.45 (wind: -0.7 m/s) |
| 2009 | World Championships | Berlin, Germany | 4th | 4 × 100 m relay | 38.30 (relay leg: 1st) |
| 2009 | Asian Championships | Guangzhou, China | 21st (h) | 100 m | 10.82 (wind: -1.0 m/s) |
| 2009 | 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 |
| 2010 | Asian Games | Guangzhou, China | 15th (sf) | 100 m | 10.56 (wind: +0.9 m/s) |
| 2010 | 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 | London, United Kingdom | 31st (h) | 100 m | 10.30 (wind: +0.7 m/s) |
| 2012 | Olympic Games | 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) 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) |