Masao Kobayashi boxer
- bouts
- 31
- won
- 22
- lost
- 7
- draw
- 2
- Status
- inactive
- Division
- lightweight
- Debut
- 1934-10-13
- Height
- -
- Reach
- -
- Age
- 20
- Born
- 1918-00-00
- Death
- 1938-06-20
- Nationality
- Japan
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1938-01-03 | Joe Wonderbar | L | Osaka | LOST Points |
| 1937-12-25 | Tatsuo Kaneko | LLLLLL | WIN Points |
|
| 1937-11-07 | Bobby Wills | WLLWLL | Nishinomiya | WIN KO |
| 1937-08-08 | Matsuo Amino | WWWWWD | Osaka | DRAW Points |
| 1937-06-26 | Tatsuo Kaneko | LLLL | Osaka | WIN Points |
| 1937-05-26 | Motoshige Murata | L | LOST Points |
|
| 1937-04-30 | Shinichi Kimura | debut | WIN KO |
|
| 1936-12-17 | Tatsuo Kaneko | LL | WIN KO |
|
| 1936-12-09 | Riichi Sato | WLLLDL | WIN Points |
|
| 1936-11-15 | Kunio Kitami | debut | WIN KO |
|
| 1936-10-17 | Terry Second | LLLLLL | Hamamatsu | WIN KO |
| 1936-10-06 | Riichi Sato | WWLLLD | WIN Points |
|
| 1936-09-09 | Bobby Wills | LLLLLW | Osaka | WIN Points |
| 1936-08-24 | Bobby Wills | LLLLLL | Yokohama | LOST |
| 1936-08-17 | Jack Clayton | WWDLLW | Shanghai | LOST Points |
| 1936-07-29 | Bobby Wills | DLLLLL | WIN Points |
|
| 1936-07-01 | Tatsuo Kaneko | L | Osaka | WIN KO |
| 1936-06-20 | Toru Kobayashi | LLLD | Nishinomiya | WIN KO |
| 1936-04-26 | Tetsu Yamaoka | LWLWWL | Nishinomiya | WIN Points |
| 1936-04-16 | Toru Kobayashi | LL | WIN Points |
|
| 1936-03-24 | Tetsu Yamaoka | DLWLWW | WIN Points |
|
| 1936-02-20 | Taro Kiyokawa | LDLWL | WIN Points |
|
| 1936-01-15 | Tadakazu Kin | LLL | WIN Points |
|
| 1935-11-25 | Tetsu Yamaoka | WLLWDL | LOST Points |
|
| 1935-07-05 | Yoshiharu Abe | LLLLW | WIN Points |
|
| 1935-06-23 | Umesaburo Nakamura | WWWLDW | Nishinomiya | DRAW Points |
| 1935-06-06 | Kanji Yamaguchi | LW | WIN Points |
|
| 1935-01-30 | Isao Shiina | WWWLW | LOST Points |
|
| 1934-11-30 | Shigeru Kimura | W | LOST Points |
|
| 1934-11-05 | Kazuo Kobayashi | LLLLLD | WIN Technical knockout |
|
| 1934-10-13 | Kanji Yamaguchi | debut | WIN KO |
