Koichi Yamamoto boxer
- bouts
- 42
- won
- 23
- lost
- 13
- draw
- 6
- Status
- inactive
- Division
- super bantamweight
- Debut
- 1961-09-12
- Height
- -
- Reach
- -
- Age
- -
- Born
- 1943-07-31
- Death
- -
- Nationality
- Japan
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1968-04-17 | Hajime Taroura | DDWWLL | LOST Unanimous decision |
|
| 1967-11-11 | Mitsunori Seki | WLWWWW | Kanazawa | LOST KO |
| 1967-07-27 | Katsuo Saito | WWDWLL | Ina Gymnasium, Gifu | LOST KO |
| 1967-02-19 | Hajime Taroura | WWWLDD | DRAW Points |
|
| 1966-12-01 | Takeo Bando | DLDLDL | Korakuen Hall | WIN Points |
| 1966-08-13 | Won-Suk Lee | WDWLDW | Seoul | LOST Points |
| 1966-04-21 | Takeo Bando | WLDLDL | DRAW |
|
| 1965-10-24 | Hajime Taroura | WWLDWW | DRAW Points |
|
| 1965-09-27 | Rokuro Ishiyama | WWWLWW | LOST Points |
|
| 1965-08-01 | Kwang Joo Lee | WWLLLD | Seoul | LOST Points |
| 1965-06-30 | Soo Kang Suh | D | Seoul | WIN Points |
| 1965-05-02 | Masao Kasai | LLD | Korakuen Hall | WIN KO |
| 1965-01-16 | Sugar B Yusof | W | Asakusa Hall | WIN Points |
| 1964-08-20 | Hiroshi Mori | WLLWLD | DRAW Points |
|
| 1964-06-27 | Tokijiro Nakanobu | debut | Asakusa Hall | WIN Points |
| 1964-05-30 | Taizo Kakizawa | WWWLLL | Ashikaga | WIN Points |
| 1964-04-23 | Hiroshi Mori | WWLLWL | DRAW Points |
|
| 1964-03-31 | Toshio Shibazaki | LLWLDL | WIN Points |
|
| 1964-03-03 | Koichi Okajima | LLL | Riki Sports Palace | WIN Points |
| 1964-02-06 | Ryoichi Yasutake | debut | Korakuen Gym | WIN Points |
| 1963-12-02 | Toyoharu Mizuta | WWWLWD | Korakuen Gym | LOST Points |
| 1963-11-11 | Mamoru Hayashi | W | Korakuen Gym | LOST Points |
| 1963-10-15 | Hidemori Tsujimoto | LDWLWW | WIN Points |
|
| 1963-10-03 | Takehiro Shoji | WL | Korakuen Gym | LOST Points |
| 1963-09-04 | Masao Harada | W | Kanayama Gym, Nagoya | WIN Technical knockout |
| 1963-08-05 | Isamu Kato | WLL | LOST Points |
|
| 1963-05-05 | Morisaka Narita | DL | WIN Points |
|
| 1963-03-24 | Hideo Oishi | WLLDWL | LOST Points |
|
| 1963-03-11 | Sueyoshi Seki | WDWLLL | Korakuen Gym | DRAW Points |
| 1963-01-28 | Tomio Isono | WL | WIN Points |
|
| 1962-12-04 | Seiichi Nishiya | L | Korakuen Gym | WIN Points |
| 1962-08-02 | Katsuo Saito | WWDDWW | LOST Points |
|
| 1962-06-08 | Eiji Onuma | DL | WIN Points |
|
| 1962-04-20 | Mitsuru Akiyama | WL | WIN Points |
|
| 1961-12-25 | Atsushi Gunji | WWWWWW | Korakuen Gym | LOST Points |
| 1961-12-08 | Toshio Ebara | debut | WIN Points |
|
| 1961-11-25 | Setsuo Harada | LLLWL | Korakuen Gym | WIN Points |
| 1961-11-13 | Ken Higurashi | LL | Kokugikan | WIN Points |
| 1961-11-02 | Mitsuo Nishimura | debut | WIN Points |
|
| 1961-10-22 | Seisaku Hagachizaki | debut | WIN Points |
|
| 1961-09-17 | Kuniaki Masuda | debut | WIN Points |
|
| 1961-09-12 | Kazuo Yamauchi | debut | Korakuen Gym | WIN Points |