Koichi Sumiya boxer
- bouts
- 4
- won
- 1
- lost
- 2
- draw
- 1
- Status
- inactive
- Division
- super lightweight
- Debut
- 2014-05-25
- Height
- 5′ 9″/175cm
- Reach
- -
- Age
- -
- Born
- 1987-11-24
- Death
- -
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 2015-10-18 | Yuya Watanabe | debut | Sangyo Shinko Center, Sakai | WIN Unanimous decision |
| 2015-05-10 | Yosuke Shimagawa | LWLWDW | Big Wave, Wakayama | LOST Split-decision |
| 2014-08-22 | Yuki Arakawa | L | Central Gym, Kobe | DRAW Split-decision |
| 2014-05-25 | Marcos Sogabe | WDWLLL | Big Wave, Wakayama | LOST Technical knockout |