Mamoru Yamaguchi losses
Over 20 years as a professional, Mamoru Yamaguchi has compiled a 31-13-5 (15) record, including ten title fights across four weight classes. He has 13 losses against twelve different opponents, four of them in title fights.
13. Mamoru Yamaguchi loses to Toru Ogawa via unanimous decision
On May 26, 2019 Mamoru Yamaguchi faced Toru Ogawa in a flyweight bout. Yamaguchi was 41 years old with a record of 31-12-5, and Ogawa was 0 with a record of 0-0. Yamaguchi was on a 2-fight losing streak. Yamaguchi lost via unanimous decision. Went the distance with Ogawa.
12. Mamoru Yamaguchi loses to Yuya Wakamatsu via KO
On July 1, 2018 Mamoru Yamaguchi faced Yuya Wakamatsu in a flyweight bout. Yamaguchi was 41 years old with a record of 31-11-5, and Wakamatsu was 23 with a record of 9-2. Both Yamaguchi and Wakamatsu were coming off a loss. Wakamatsu stopped Yamaguchi via TKO in the 2nd round.
11. Mamoru Yamaguchi loses to Senzo Ikeda in their 2nd fight via unanimous decision
On August 20, 2017 Mamoru Yamaguchi defended his Pancrase flyweight title against Senzo Ikeda. It was their second meeting. Yamaguchi was 40 years old with a record of 31-10-5, and Ikeda was 0 with a record of 0-0. Yamaguchi was on a 3-fight winning streak. Yamaguchi lost via unanimous decision. Lost the title. Went the distance with Ikeda.
10. Mamoru Yamaguchi loses to Yuki Yasunaga via split decision
On December 13, 2015 Mamoru Yamaguchi faced Yuki Yasunaga in a light flyweight bout. Yamaguchi was 38 years old with a record of 28-9-5, and Yasunaga was 0 with a record of 0-0. Yamaguchi was coming off a win. Yamaguchi lost via split decision. Went the distance with Yasunaga.
9. Mamoru Yamaguchi loses to Czar Sklavos via KO
On February 23, 2014 Mamoru Yamaguchi faced Czar Sklavos in a light flyweight bout. Yamaguchi was 36 years old with a record of 26-8-4, and Sklavos was 0 with a record of 0-0. Sklavos submitted Yamaguchi via rear-naked choke in the 1st round.
8. Mamoru Yamaguchi loses to Mikihito Yamagami via majority decision
On June 22, 2013 Mamoru Yamaguchi faced Mikihito Yamagami in a light flyweight bout. Yamaguchi was 36 years old with a record of 26-7-3, and Yamagami was 26 with a record of 8-2. Yamaguchi was on a 2-fight losing streak, while Yamagami was on a 5-fight winning streak. Yamaguchi lost via majority decision. Went the distance with Yamagami.
7. Mamoru Yamaguchi loses to Darrell Montague via split decision
On December 24, 2012 Mamoru Yamaguchi faced Darrell Montague in a flyweight bout. Yamaguchi was 35 years old with a record of 26-6-3, and Montague was 25 with a record of 11-2. Yamaguchi was coming off a loss, while Montague was on a 2-fight winning streak. Yamaguchi lost via split decision. Went the distance with Montague.
6. Mamoru Yamaguchi loses to Jussier da Silva via unanimous decision
On August 6, 2011 Mamoru Yamaguchi faced Jussier da Silva in a light flyweight bout. Yamaguchi was 34 years old with a record of 26-5-3, and Silva was 0 with a record of 0-0. Yamaguchi was on a 6-fight winning streak. Yamaguchi lost via unanimous decision. Went the distance with Silva.
5. Mamoru Yamaguchi loses to Shinichi Kojima in their 3rd fight via KO
On July 18, 2008 Mamoru Yamaguchi fought Shinichi Kojima for the vacant Shooto bantamweight title. It was their third meeting. Yamaguchi was 31 years old with a record of 20-4-3, and Kojima was 29 with a record of 8-3-4. Yamaguchi was on a 2-fight winning streak, while Kojima was on a 2-fight losing streak. Kojima submitted Yamaguchi via guillotine choke in the 3rd round. Failed to win the vacant title.
4. Mamoru Yamaguchi loses to Yasuhiro Urushitani in their 2nd fight via unanimous decision
On September 22, 2007 Mamoru Yamaguchi faced Yasuhiro Urushitani in a bantamweight bout. It was their second meeting. Yamaguchi was 30 years old with a record of 18-3-3, and Urushitani was 0 with a record of 0-0. Yamaguchi was coming off a win. Yamaguchi lost via unanimous decision. Went the distance with Urushitani.
3. Mamoru Yamaguchi loses to Shinichi Kojima in their 2nd fight via KO
On October 14, 2006 Mamoru Yamaguchi defended his Shooto bantamweight title against Shinichi Kojima. It was their second meeting. Yamaguchi was 29 years old with a record of 17-2-3, and Kojima was 27 with a record of 6-1-3. Yamaguchi was on a 2-fight winning streak and Kojima was coming off a win. Kojima submitted Yamaguchi via choke-out in the 1st round. Lost the title.
2. Mamoru Yamaguchi loses to Robson Moura via unanimous decision
On September 16, 2002 Mamoru Yamaguchi faced Robson Moura in a flyweight bout. Yamaguchi was 25 years old with a record of 8-1-1, and Moura was 24 with a record of 0-0. Yamaguchi was coming off a win. Yamaguchi lost via unanimous decision. Went the distance with Moura.
1. Mamoru Yamaguchi loses to Masahiro Oishi via KO
On November 25, 2001 Mamoru Yamaguchi defended his Shooto featherweight title against Masahiro Oishi. Yamaguchi was 24 years old with a record of 7-0-1, and Oishi was 32 with a record of 7-5-3. Yamaguchi was on an undefeated 3-fight winning streak and Oishi was on a 2-fight winning streak. Oishi submitted Yamaguchi via triangle/armbar in the 1st round. Lost the title.