Hiroyuki Oka boxer
- bouts
- 5
- won
- 0
- lost
- 4
- draw
- 1
- Status
- inactive
- Division
- -
- Debut
- 1985-04-24
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- -
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1988-05-22 | Masumi Yamaguchi | DWWW | Budokan, Tagawa | LOST Technical knockout |
| 1987-09-05 | Masumi Yamaguchi | D | Kurume | LOST KO |
| 1987-06-27 | Masumi Yamaguchi | debut | Nakatsu | DRAW Points |
| 1986-12-14 | Atsushi Oyakawa | WWW | Gushito Gym, Okinawa | LOST KO |
| 1985-04-24 | Koichi Aramaki | debut | Nogata | LOST Technical knockout |