Yutaka Koyama boxer
- bouts
- 8
- won
- 1
- lost
- 6
- draw
- 1
- Status
- inactive
- Division
- welterweight
- Debut
- 1990-09-10
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1994-05-22 | Cyborg Koichi | WWWLWW | Kochi | LOST Corner retirement |
| 1993-06-14 | Ikki Ogasawara | WWLWWL | LOST Points |
|
| 1993-02-06 | Koichi Yokota | LLWDLL | LOST KO |
|
| 1992-11-07 | Ikuo Yamanaka | WWWWW | LOST Technical knockout |
|
| 1992-03-19 | Koichi Yokota | WLDLLW | DRAW Points |
|
| 1991-08-12 | Taiyu Sone | WWWWWW | LOST Unanimous decision |
|
| 1991-01-14 | Toru Ichiyama | WW | Korakuen Hall | WIN Unanimous decision |
| 1990-09-10 | Viachaslau Ianouski | WWW | LOST KO |