Isamu Onishi boxer
- bouts
- 5
- won
- 0
- lost
- 5
- draw
- 0
- Status
- inactive
- Division
- featherweight
- Debut
- 1949-07-17
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1954-05-17 | Yoshiharu Yokoi | LLWLLL | Kyoto | LOST Points |
| 1953-02-14 | Masakazu Otsuka | WWWWWW | Osaka | LOST Technical knockout |
| 1953-01-04 | Masakazu Otsuka | WLWWWW | Prefectural Gymnasium, Osaka | LOST Points |
| 1949-10-05 | Junji Yasuda | W | Kyoto | LOST Points |
| 1949-07-17 | Junji Yasuda | debut | Kyoto | LOST Points |