Ryusuke Kumagai boxer
- bouts
- 11
- won
- 6
- lost
- 4
- draw
- 1
- Status
- inactive
- Division
- super featherweight
- Debut
- 2004-05-30
- Height
- 5′ 9½″/176cm
- Reach
- -
- Age
- -
- Born
- 1980-09-11
- Death
- -
- Nationality
- Japan
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 2009-11-08 | Makoto Sakai | WWLLWW | Australian Memorial Hall, Yokkaichi | LOST KO |
| 2009-05-10 | Shozo Higashi | LWLWWL | Australian Memorial Hall, Yokkaichi | WIN Technical knockout |
| 2008-11-09 | Weerawat Sukchaisri | W | City Gymnasium, Obama | WIN KO |
| 2007-12-22 | Yuichi Kubota | debut | City Gymnasium, Kuwana | WIN KO |
| 2007-11-04 | Akio Morita | LL | Kiramekiminato Hall, Tsuruga | WIN Technical knockout |
| 2006-08-06 | Tatsuya Yasuda | LW | Aioi Hall, Kariya | LOST Technical knockout |
| 2005-05-01 | Yasumasa Eguchi | LWWLDW | City Hall, Nagoya | LOST Unanimous decision |
| 2005-03-13 | Tetsunori Hashimoto | WLL | Event Plaza, Toyama | WIN KO |
| 2005-01-16 | Tsuyoshi Adachi | WWLW | Central Gym, Shimada | LOST Unanimous decision |
| 2004-10-17 | Tetsunori Hashimoto | WL | Sangyo Hall, Kanazawa | WIN KO |
| 2004-05-30 | Seiji Shibuya | LDWLLL | Sangyo Hall, Kanazawa | DRAW Points |