Koyo Yamazaki boxer
- bouts
- 10
- won
- 6
- lost
- 3
- draw
- 1
- Status
- inactive
- Division
- minimumweight
- Debut
- 2000-06-03
- Height
- 5′ 3″/160cm
- Reach
- -
- Age
- -
- Born
- 1979-06-10
- Death
- -
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 2003-10-13 | Toshiki Ogawa | LWWWWL | Korakuen Hall | DRAW Points |
| 2003-06-21 | Masatate Tsuji | WW | Korakuen Hall | LOST Split-decision |
| 2002-12-13 | Nobuyuki Enomoto | WWDWLL | Korakuen Hall | LOST Unanimous decision |
| 2002-04-07 | Koichi Fujishiro | LWW | Golf Links Arena, Koga | WIN Unanimous decision |
| 2001-12-15 | Katsunari Takayama | WWWWWW | Korakuen Hall | LOST Points |
| 2001-11-03 | Taku Matsui | WWWWW | Korakuen Hall | WIN Points |
| 2001-07-04 | Makoto Akira | LWW | Korakuen Hall | WIN Points |
| 2001-04-27 | Makoto Ikuzawa | W | WIN Points |
|
| 2000-09-19 | Kenichi Kishida | W | Korakuen Hall | WIN Points |
| 2000-06-03 | Tatsuro Fujii | debut | WIN Technical knockout |
