Ryuta Kozasa boxer
- bouts
- 4
- won
- 0
- lost
- 4
- draw
- 0
- Status
- inactive
- Division
- super bantamweight
- Debut
- 2013-05-12
- Height
- -
- Reach
- -
- Age
- -
- Born
- 1993-02-23
- Death
- -
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 2015-04-29 | Takashi Matsugano | debut | Orocity Hall, Kagoshima | LOST Technical knockout |
| 2013-10-20 | Daichi Ono | debut | Prefectural Gymnasium, Kurume | LOST Technical knockout |
| 2013-07-22 | Hokuto Kawana | debut | Korakuen Hall | LOST Technical knockout |
| 2013-05-12 | Eiichiro Ninomiya | debut | Heiwa Hall, Nagasaki | LOST Technical knockout |