Shinji Kai boxer
- bouts
- 4
- won
- 0
- lost
- 4
- draw
- 0
- Status
- inactive
- Division
- minimumweight
- Debut
- 2001-12-16
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 2003-02-15 | Yasuyuki Fukushima | debut | West Japan Exhibition Hall, Kitakyushu | LOST Unanimous decision |
| 2002-11-16 | Yuichi Hirano | debut | Niagecho Gym, Oita | LOST KO |
| 2002-04-29 | Naoya Kameda | LLLL | B-Con Plaza, Beppu | LOST Technical knockout |
| 2001-12-16 | Kazuma Baba | WLW | City Budokan, Tagawa | LOST Points |