Keiji Koizumi boxer
- bouts
- 10
- won
- 5
- lost
- 5
- draw
- 0
- Status
- inactive
- Division
- super featherweight
- Debut
- 1981-03-15
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1988-06-02 | Minoru Mitsui | WWWWDW | Korakuen Hall | LOST Technical knockout |
| 1987-10-03 | Masahiro Takagi | WWWWLW | Korakuen Hall | LOST Technical knockout |
| 1987-05-20 | Hidenori Shibata | WLW | Korakuen Hall | WIN Technical knockout |
| 1986-10-02 | Kazuya Kano | WWWWWW | LOST Technical knockout |
|
| 1984-04-15 | Masayuki Ono | WLLWLW | Korakuen Hall | LOST Split-decision |
| 1984-01-24 | Kunio Takanami | LLWWDW | Korakuen Hall | WIN KO |
| 1983-10-10 | Chojun Yara | WWL | Korakuen Hall | WIN KO |
| 1982-01-26 | Shizuo Iwamoto | WWWWL | WIN Points |
|
| 1981-10-13 | Takashi Komori | WW | Korakuen Hall | LOST Technical knockout |
| 1981-03-15 | Chikara Maejima | W | Korakuen Hall | WIN KO |
