Hiroyuki Masai boxeador
- combates
- 9
- ganados
- 3
- perdidos
- 4
- empates
- 2
- Estado
- inactive
- División
- featherweight
- Debut
- 1970-07-29
- Altura
- -
- Alcanza
- -
- Edad
- -
- Nacimiento
- -
- Muerte
- -
- Nacionalidad
- Japan
| Fecha | Oponente | Resultados últimos oponentes | Lugar | Resultado |
|---|---|---|---|---|
| 1974-10-26 | Tatsunoshin Iwami | WLWLDL | Nihon University Auditorium | WIN Points |
| 1974-07-21 | Tamio Negishi | LWWDWL | Korakuen Hall | DRAW Points |
| 1974-04-18 | Kenji Endo | LLWLLL | LOST KO |
|
| 1973-11-20 | Sanjo Takemori | WWLLWW | Nihon University Auditorium | LOST KO |
| 1972-10-13 | Joe Malonso | LLLLLW | Agana | LOST Points |
| 1971-11-15 | Katsutoshi Inuzuka | WLWWWW | WIN Points |
|
| 1971-05-06 | Koji Kunishige | WLLW | WIN Points |
|
| 1970-11-15 | Hurricane Teru | WD | LOST Points |
|
| 1970-07-29 | Osamu Toku | DL | Korakuen Hall | DRAW Points |