Ryuji Kubota boxer
- bouts
- 21
- won
- 9
- lost
- 11
- draw
- 1
- Status
- inactive
- Division
- flyweight
- Debut
- 1997-11-12
- Height
- 5′ 5″/165cm
- Reach
- -
- Age
- -
- Born
- 1979-12-31
- Death
- -
- Nationality
- Japan
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 2005-10-31 | Kazuyuki Ichikawa | WDWWLW | Korakuen Hall | LOST Technical knockout |
| 2005-07-18 | Ryutaro Kimura | LWLWWL | Korakuen Hall | WIN Technical knockout |
| 2005-03-07 | Takayuki Hiraizumi | LWLLLW | Korakuen Hall | WIN |
| 2004-11-20 | Masayuki Fujigake | WWLWLD | Korakuen Hall | LOST Unanimous decision |
| 2004-07-27 | Yuya Morimoto | LLLWWW | Korakuen Hall | DRAW Points |
| 2003-07-14 | Kuniyuki Aizawa | WWW | Korakuen Hall | LOST Technical knockout |
| 2002-11-29 | Kentaro Inamura | WWDWLW | Korakuen Hall | LOST Unanimous decision |
| 2001-06-06 | Takeyuki Kojima | LWWWWD | LOST Points |
|
| 2001-01-15 | Mizuo Nakata | LLWLWW | Korakuen Hall | LOST Points |
| 2000-08-21 | Takefumi Sakata | WWWWWW | Korakuen Hall | LOST Unanimous decision |
| 2000-04-17 | Ryuji Muramatsu | WWLWLW | Korakuen Hall | LOST Points |
| 1999-12-06 | Motoichiro Sato | WWWWLW | WIN Points |
|
| 1999-10-22 | Takahisa Masuda | LWWLWW | LOST Points |
|
| 1999-08-31 | Satoshi Owada | LWWW | WIN Points |
|
| 1999-05-19 | Toshiaki Soma | W | WIN Points |
|
| 1998-12-21 | Koichiro Tamaki | WWL | LOST Points |
|
| 1998-09-28 | Daisuke Naito | WWDWWW | Korakuen Hall | LOST Majority decision |
| 1998-08-03 | Kazuyoshi Ueki | W | WIN Points |
|
| 1998-06-30 | Satoshi Kamata | W | Korakuen Hall | WIN Points |
| 1998-05-01 | Shin Fujii | debut | Korakuen Hall | WIN Points |
| 1997-11-12 | Takashi Egawa | debut | Tsukisamu Green Dome, Sapporo | WIN Points |