Koichi Sugiyama boxer
- bouts
- 7
- won
- 2
- lost
- 4
- draw
- 1
- Status
- inactive
- Division
- welterweight
- Debut
- 1997-02-20
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 2004-05-02 | Masato Arai | LWWWWW | Sowacho Gym, Ibaragi | LOST KO |
| 2001-10-25 | Teruyoshi Omagari | WDDLWW | Korakuen Hall | LOST KO |
| 2001-08-30 | Yoichi Miyamoto | WWWLWW | Korakuen Hall | DRAW Points |
| 2001-05-15 | Yuya Kato | WLDWDW | Korakuen Hall | WIN Points |
| 2000-11-04 | Kazutaka Aihara | WWLWWW | LOST Points |
|
| 2000-09-29 | Yoichi Miyamoto | LWWW | WIN Points |
|
| 1997-02-20 | Kenshi Toda | debut | Kokugikan | LOST KO |