Douglas Ryuma boxer
- bouts
- 19
- won
- 13
- lost
- 6
- draw
- 0
- Status
- inactive
- Division
- welterweight
- Debut
- 1987-02-22
- Height
- -
- Reach
- -
- Age
- -
- Born
- 1963-04-24
- Death
- -
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1991-04-23 | Yoshihiro Yamamoto | WLWLWD | Korakuen Hall | LOST Unanimous decision |
| 1990-12-10 | Koichi Yokota | LWWWLD | Korakuen Hall | WIN Points |
| 1990-08-13 | Toshihiro Suda | LWL | WIN KO |
|
| 1990-05-14 | Yoshifumi Kitajima | LWDDWL | Korakuen Hall | LOST Split-decision |
| 1990-02-12 | Eiji Kikuzaki | DLWDDL | Korakuen Hall | LOST Split-decision |
| 1989-12-11 | Makoto Nishizawa | LWLWWW | WIN KO |
|
| 1989-10-20 | Minoru Amano | LWWWWW | WIN Points |
|
| 1989-08-05 | Koichi Yokota | LDLWWW | Korakuen Hall | WIN Points |
| 1989-06-17 | Masato Takada | WDLDLL | WIN Points |
|
| 1989-04-17 | Tadashi Domoto | W | WIN KO |
|
| 1989-02-07 | Keiji Sakaguchi | debut | WIN Points |
|
| 1988-10-12 | Takao Tenma | LL | Korakuen Hall | WIN Points |
| 1988-04-25 | Yujiro Kuroki | LL | LOST KO |
|
| 1988-01-24 | Jun Takahashi | LLWW | Korakuen Hall | LOST Points |
| 1987-11-12 | Katsumi Miura | WW | LOST KO |
|
| 1987-09-14 | Nobuyuki Gonda | debut | Korakuen Hall | WIN KO |
| 1987-07-16 | Mitsuhiko Ota | debut | WIN Points |
|
| 1987-05-21 | Yujiro Nakano | debut | Korakuen Hall | WIN KO |
| 1987-02-22 | Zenichi Sasagawa | debut | Korakuen Hall | WIN KO |
