Junya Kosaka boxer
- bouts
- 27
- won
- 16
- lost
- 9
- draw
- 2
- Status
- inactive
- Division
- welterweight
- Debut
- 1959-06-23
- Height
- -
- Reach
- -
- Age
- -
- Born
- 1938-03-10
- Death
- -
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1963-05-26 | Gerald Pate | LLLLLL | Kobe | DRAW Points |
| 1963-03-17 | Guizani Rezgui | LWWWWL | Kobe | WIN Points |
| 1963-02-13 | Hachiro Yamada | LLLWLL | Korakuen Gym | WIN Points |
| 1963-01-14 | Makoto Watanabe | WLLWW | Kobe | LOST Points |
| 1962-12-11 | Kogen Arai | LLLLLL | Abeno Gymnasium, Osaka | WIN KO |
| 1962-11-12 | Dick Carlos | WDDLL | Korakuen Gym | WIN KO |
| 1962-09-09 | Kazumi Wakudani | WDWWLL | Prefectural Gymnasium, Osaka | WIN KO |
| 1962-08-20 | Kazumi Wakudani | LWDWWL | Osaka | WIN Points |
| 1962-07-18 | Kogen Arai | LLLLLL | Osaka | WIN KO |
| 1961-12-03 | Gerald Pate | WLLWL | Wakayama | LOST Points |
| 1961-10-26 | Shigemasa Kawakami | W | LOST Points |
|
| 1961-09-13 | Han Soo Kang | WL | Osaka | WIN Corner retirement |
| 1961-08-20 | Morio Kaneda | WLWWWW | Kobe | LOST Technical knockout |
| 1961-07-09 | Jiro Kanazawa | WWLLLL | Otemae Hall, Osaka | WIN Points |
| 1961-05-21 | Sakuji Shinozawa | WLLWWL | Osaka | WIN Points |
| 1961-03-11 | Narumi Kirishima | LLWWLL | Kobe | WIN Points |
| 1960-11-29 | Yuji Nakamura | WLDL | Kyoto | WIN Points |
| 1960-09-10 | Jiro Kanazawa | LLWWWW | Osaka | LOST Points |
| 1960-06-20 | Jiro Kanazawa | DWWLLL | Korakuen Gym | LOST Points |
| 1960-06-10 | Fukuo Nakamura | LWWLWW | Kobe | WIN Points |
| 1960-05-19 | Saburo Ao | L | Kanayama Gym, Nagoya | WIN Points |
| 1960-04-02 | Yuji Nakamura | WL | Abeno Gymnasium, Osaka | DRAW Points |
| 1960-03-17 | Narumi Kirishima | WLLW | LOST Points |
|
| 1960-01-31 | Makoto Watanabe | LWWWWW | Osaka | LOST KO |
| 1959-12-12 | Masayuki Kamei | L | Osaka | WIN Points |
| 1959-12-05 | Taisuke Kiyama | L | Osaka | WIN Points |
| 1959-06-23 | Fusao Minamida | debut | Kyoto | LOST KO |
