Sumio Kai boxer
- bouts
- 24
- won
- 14
- lost
- 10
- draw
- 0
- Status
- inactive
- Division
- super welterweight
- Debut
- 1970-10-03
- Height
- -
- Reach
- -
- Age
- -
- Born
- 1950-10-03
- Death
- -
- Nationality
- Japan
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1978-05-05 | Tarzan Tobaru | WWWWLL | LOST KO |
|
| 1978-01-15 | Ho Joo | WWWWWW | Busan | LOST KO |
| 1977-12-03 | Kenji Shibata | WWWWWL | Korakuen Hall | LOST KO |
| 1977-08-26 | Minoru Ono | LLWWLW | Sports Center, Utsunomiya | LOST KO |
| 1977-04-25 | Ryu Sorimachi | WWWWWW | LOST Points |
|
| 1976-10-25 | Kenji Shibata | WLWLWW | LOST KO |
|
| 1976-08-21 | Tsutomu Hagusa | LLWLWL | WIN KO |
|
| 1976-04-26 | Hiroshi Katono | WWLLLL | WIN Technical knockout |
|
| 1975-12-14 | Masami Yoshinaga | LLLLLW | WIN KO |
|
| 1975-10-27 | Ryuichi Furuta | WDLLL | WIN Technical knockout |
|
| 1975-08-15 | Kazunori Shiratori | WLWDWW | WIN KO |
|
| 1975-07-15 | Tadashi Nishimura | WL | Matsuyama | WIN KO |
| 1975-05-19 | Shunkichi Suemitsu | LLLWLL | WIN KO |
|
| 1975-02-26 | Tadashi Nishimura | W | Korakuen Hall | WIN KO |
| 1975-01-24 | Shoji Ito | LLL | Korakuen Hall | WIN Points |
| 1974-12-26 | Hiroyuki Noguchi | debut | Korakuen Hall | WIN KO |
| 1971-10-17 | Yoshihiro Sugaya | debut | LOST Points |
|
| 1971-08-13 | Noriyasu Sekito | LL | Ota-City General Gymnasium | WIN KO |
| 1971-05-28 | Takeshi Watanabe | WW | LOST Points |
|
| 1971-04-03 | Ben Takahashi | debut | LOST Points |
|
| 1971-03-05 | Mitsuyoshi Shiraishi | debut | Mitaka | WIN KO |
| 1970-11-28 | Makoto Yamada | debut | LOST KO |
|
| 1970-10-30 | Ryoichi Satoki | LL | WIN KO |
|
| 1970-10-03 | Hikoharu Otani | debut | WIN KO |