Seiya Yamaguchi boxer
- bouts
- 12
- won
- 3
- lost
- 7
- draw
- 2
- Status
- inactive
- Division
- feather
- Debut
- 2016-12-05
- Height
- 5′ 7″/170cm
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 2021-12-20 | Daiki Takeuchi | LWWWL | Korakuen Hall | DRAW Majority decision |
| 2020-08-18 | Leon Yamaguchi | WLW | Korakuen Hall | LOST Unanimous decision |
| 2019-10-11 | Daiki Takeuchi | LWW | Korakuen Hall | WIN Unanimous decision |
| 2019-06-05 | Daiki Imanari | WW | Korakuen Hall | WIN Unanimous decision |
| 2019-04-05 | Hiroto Yamabe | WL | Korakuen Hall | WIN Technical knockout |
| 2019-02-08 | Shunsuke Kamimura | DDL | Korakuen Hall | WIN Technical knockout |
| 2018-10-07 | Kenshin Megumi | WLLW | Arena, Yokohama | LOST Unanimous decision |
| 2018-07-27 | Shota Shiratori | W | Korakuen Hall | LOST Majority decision |
| 2018-04-09 | Issei Watanabe | L | Korakuen Hall | WIN Technical knockout |
| 2017-10-22 | Yasuhiro Okada | W | Kokugikan | WIN Unanimous decision |
| 2017-06-25 | Shunsuke Kamimura | D | City Sogo Gym, Machida | DRAW Majority decision |
| 2016-12-05 | Yudai Yamazaki | debut | Korakuen Hall | WIN Unanimous decision |
