Umio Gen boxer
- bouts
- 58
- won
- 21
- lost
- 24
- draw
- 12
- Status
- inactive
- Division
- featherweight
- Debut
- 1934-08-28
- Height
- -
- Reach
- -
- Age
- -
- Born
- 1917-01-02
- Death
- -
- Nationality
- South Korea
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1946-07-14 | Joe Eagle | LLLLLL | DRAW Points |
|
| 1941-09-04 | Motomitsu Soda | DWLWWW | LOST Points |
|
| 1941-07-15 | Takeshi Sasazaki | WWWWWL | LOST Points |
|
| 1941-06-15 | Ryushin Kuto | debut | Nishinomiya | WIN Points |
| 1941-05-06 | Baby Gustillo | W | LOST Points |
|
| 1940-04-27 | Shintaro Yamada | debut | Seoul | WIN KO |
| 1940-04-17 | Takeshi Kaido | DWWDWW | WIN KO |
|
| 1940-03-07 | Susumu Tokunaga | WLDLD | DRAW Points |
|
| 1940-01-07 | Tsuneo Horiguchi | WWWWWW | LOST Points |
|
| 1939-05-29 | Tsuneo Horiguchi | WWWWWW | WIN Split-decision |
|
| 1939-02-24 | Clever Henry | WWWWWW | Civic Auditorium, Honolulu | LOST Points |
| 1939-01-13 | Frankie Covelli | WWLDLW | White City Arena, Chicago | LOST Majority decision |
| 1938-12-20 | Henry Hook | LWDWWL | Arena, Cleveland | LOST Points |
| 1938-11-22 | Pablo Dano | LWLLWL | Arena, Cleveland | WIN Points |
| 1938-10-26 | Kenny Reed | WLLWWL | Coliseum, San Diego | LOST Points |
| 1938-09-23 | Baby Arizmendi | WLWDWW | Coliseum, San Diego | LOST Points |
| 1938-08-26 | David Kui Kong Young | WWWWWW | Dreamland Auditorium, San Francisco | LOST Technical knockout |
| 1938-08-22 | Tomboy Romero | WDDDDW | Civic Auditorium, Stockton | LOST Points |
| 1938-07-08 | Pete DeGrasse | LLLWLL | Gilmore Stadium, Los Angeles | DRAW Points |
| 1938-07-01 | George Latka | WWWWWD | Dreamland Auditorium, San Francisco | LOST Points |
| 1938-06-03 | Chief Crazy Horse | WWWDLD | Gilmore Stadium, Los Angeles | DRAW Points |
| 1938-04-01 | Tony Chavez | WWLLWW | Legion Stadium, Hollywood | LOST Technical knockout |
| 1938-03-11 | Johnny Brown | WWDWWW | Legion Stadium, Hollywood | LOST Points |
| 1938-02-01 | Frankie Lembo | WDWDDD | Crystal Pool, Seattle | DRAW Points |
| 1938-01-21 | Nick Peters | WWLDDW | Legion Stadium, Hollywood | LOST Points |
| 1937-12-14 | Billy Buxton | WWWWWW | Crystal Pool, Seattle | DRAW Points |
| 1937-11-30 | Tony Mar | LW | Olympic Auditorium, Los Angeles | DRAW Points |
| 1937-11-09 | Richie Fontaine | DLWWWL | Olympic Auditorium, Los Angeles | LOST Unanimous decision |
| 1937-11-02 | Tony Mar | debut | Olympic Auditorium, Los Angeles | WIN Points |
| 1937-10-05 | Pablo Dano | LWDWWW | San Jose | LOST Points |
| 1937-09-24 | Pablo Dano | WLWDWW | Legion Stadium, Hollywood | LOST Points |
| 1937-08-08 | Joe Eagle | WLLDWW | WIN Points |
|
| 1937-07-26 | Tsuneo Horiguchi | WWWLWW | LOST Points |
|
| 1937-06-26 | Joe Eagle | DWWWLL | DRAW Points |
|
| 1937-04-16 | Yong-Sik Kim | debut | Seoul | WIN KO |
| 1937-03-06 | Sanekatsu Koike | DDWWLW | WIN Points |
|
| 1936-12-29 | Joe Velasco | WWWWLL | DRAW Points |
|
| 1936-12-07 | Ryo Yamazaki | DDLW | NC |
|
| 1936-11-30 | Joe Eagle | WLLWWW | DRAW Points |
|
| 1936-10-06 | Kurazo Takami | WWWWWL | WIN Points |
|
| 1936-09-14 | Shoichi Otsu | LLDDDW | LOST Points |
|
| 1936-06-06 | Star Frisco | DDLLLW | Manila | WIN Points |
| 1936-05-22 | Joe Mendiola | LWLWLD | Rizal Stadium, Manila | LOST Points |
| 1936-05-09 | Little Pancho | WWLWDL | Manila | LOST Points |
| 1936-03-24 | Saden Fujita | LLLLLW | WIN Points |
|
| 1936-01-05 | Shoichi Otsu | DDDDLL | WIN Points |
|
| 1935-12-16 | Sai Seki | LLWWWW | WIN Points |
|
| 1935-12-02 | Masahiro Nozaki | WL | WIN Points |
|
| 1935-11-25 | Takeshi Makino | DLDWLW | WIN Points |
|
| 1935-11-11 | Yukiichi Masumura | LL | WIN Points |
|
| 1935-11-04 | Akio Osanami | debut | WIN KO |
|
| 1935-07-05 | Hachiro Ito | LL | DRAW Points |
|
| 1935-03-26 | Shunji Aoki | L | DRAW Points |
|
| 1934-12-11 | Isamu Ito | WDWDDW | LOST Points |
|
| 1934-11-19 | Shunji Aoki | debut | WIN Points |
|
| 1934-10-13 | Yoshihiro Hasegawa | WDLLDD | WIN Points |
|
| 1934-09-12 | Yoichiro Hanada | LDWWDL | Niigata | LOST Points |
| 1934-08-28 | Minoru Watanabe | debut | WIN Points |