Jiro Kumagai boxer
- bouts
- 111
- won
- 60
- lost
- 26
- draw
- 25
- Status
- inactive
- Division
- welterweight
- Debut
- 1929-08-28
- Height
- -
- Reach
- -
- Age
- -
- Born
- 1909-04-08
- Death
- -
- Nationality
- Japan
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1937-04-30 | Sueo Hirakawa | LLLWLL | WIN Points |
|
| 1934-12-01 | Frank Malinao | WWWDLW | Osaka | LOST Points |
| 1934-11-10 | Terry Second | LDLLLL | Hamamatsu | WIN Points |
| 1934-10-25 | Tetsuichi Morimoto | L | Osaka | DRAW Points |
| 1934-10-17 | Seita Fukuda | debut | Kobe | WIN Points |
| 1934-05-26 | Matsuo Amino | DDWWWL | Sapporo | DRAW Points |
| 1934-04-23 | Koichi Takada | LDDWWW | LOST Corner retirement |
|
| 1934-03-15 | Kiyoshi Suzuki | L | DRAW Points |
|
| 1934-03-11 | Teiichi Shimamoto | debut | Kyoto | DRAW Points |
| 1934-02-14 | Bobby Wills | LDLLLL | Daegu | WIN Points |
| 1934-02-03 | Bobby Wills | LLDLLL | Seoul | WIN Points |
| 1933-11-25 | Bobby Wills | DLLDLL | Sendai | WIN Points |
| 1933-11-08 | Sailor Jimmy Hart | LDLDLL | Kobe | LOST Points |
| 1933-10-22 | Hurley Erwin | W | Nishinomiya | DRAW Points |
| 1933-10-11 | Parker | debut | Kobe | WIN KO |
| 1933-10-07 | Sailor Jimmy Hart | LLDLDL | Nagoya | WIN Points |
| 1933-09-25 | Yoshio Natori | DLWWWD | LOST Points |
|
| 1933-09-22 | Fighting Nelson | WWDDLW | Osaka | DRAW Points |
| 1933-07-05 | Susumu Noguchi | WWDWWD | Nishinomiya | DRAW Points |
| 1933-05-14 | Frank Malinao | WWWLWD | Nishinomiya | LOST Points |
| 1933-04-29 | Fighting Nelson | DLWWWD | Nishinomiya | DRAW Points |
| 1933-04-18 | Joe Sacramento | WWDDL | Kobe | WIN Points |
| 1933-04-09 | Terry Second | LLLDLL | Kobe | WIN Points |
| 1933-02-05 | Bobby Wills | DWWWWW | Taipei | DRAW Points |
| 1933-01-03 | Matsuo Amino | WDLWLL | WIN Points |
|
| 1932-12-25 | Fighting Nelson | LLDLWW | LOST Points |
|
| 1932-10-23 | Raul Talan | WWWWWD | LOST Points |
|
| 1932-10-21 | Don Stewart | LLDDDW | WIN Points |
|
| 1932-10-05 | Yasuro Taga | WLLLLL | WIN Points |
|
| 1932-09-26 | Chiyokichi Kawauchi | debut | WIN Points |
|
| 1932-09-20 | Raul Talan | WWWWWW | DRAW Points |
|
| 1932-08-04 | Sidney Brent | WWWLLL | LOST Technical knockout |
|
| 1932-07-28 | Johnny Chrismas | LWDWLD | LOST Technical knockout |
|
| 1932-07-20 | Kintaro Usuda | DWWDWD | DRAW Points |
|
| 1932-07-05 | Yasuro Taga | WLLLL | WIN Points |
|
| 1932-06-16 | Frank Malinao | DWLDWW | LOST Points |
|
| 1932-06-08 | Toshiyuki Yamanaka | LLDL | DRAW Points |
|
| 1932-06-03 | Torizo Futo | LLLLLL | WIN Points |
|
| 1932-05-20 | Yasuro Taga | WLL | WIN Points |
|
| 1932-05-09 | Teinosuke Tanaka | DLL | WIN Points |
|
| 1932-05-03 | Frank Malinao | WLWLD | WIN |
|
| 1932-04-27 | Tatsuro Uemura | WWWWWD | DRAW Points |
|
| 1932-04-20 | Don Stewart | LWLWWL | WIN Points |
|
| 1932-04-17 | Toshiyuki Yamanaka | L | WIN Points |
|
| 1932-04-15 | Kintaro Usuda | WWLWWW | LOST Points |
|
| 1932-04-09 | Bobby Wills | WLLWLL | WIN Points |
|
| 1932-03-25 | Susumu Noguchi | LWWWWW | LOST Points |
|
| 1932-03-20 | Kazuo Kobayashi | LLLL | WIN Points |
|
| 1932-02-23 | Sueo Hirakawa | LLLWLL | DRAW Points |
|
| 1932-02-15 | Kintaro Usuda | DLWWWW | WIN Points |
|
| 1932-02-09 | Joe Sacramento | WWLWWW | DRAW Points |
|
| 1932-01-22 | Manzaburo Kiyomiya | L | WIN Technical knockout |
|
| 1932-01-07 | Kazuo Kobayashi | L | WIN Technical knockout |
|
| 1932-01-03 | Torizo Futo | LLLLL | Nagoya | WIN Points |
| 1931-12-26 | Susumu Noguchi | WWWWLL | LOST Points |
|
| 1931-12-19 | Torizo Futo | LLLL | WIN Points |
|
| 1931-11-17 | Susumu Noguchi | WWWWWW | WIN |
|
| 1931-11-12 | Torizo Futo | LLL | WIN Points |
|
| 1931-11-04 | Young Alde | WWDWW | LOST Points |
|
| 1931-10-23 | Manzaburo Kiyomiya | debut | WIN Points |
|
| 1931-10-11 | Bobby Wills | WLWLLW | WIN Points |
|
| 1931-10-08 | Toyo Sato | LWLDLL | WIN Technical knockout |
|
| 1931-10-03 | Tatsuro Uemura | DWLWDD | WIN Points |
|
| 1931-09-21 | Toshio Kanai | LL | WIN Points |
|
| 1931-09-16 | Torizo Futo | L | WIN Points |
|
| 1931-09-03 | Sueo Hirakawa | LLLLLW | WIN Points |
|
| 1931-08-22 | Bobby Wills | WWLWLW | Nishinomiya | WIN Points |
| 1931-08-16 | Romeo Pavilini | LLLLLL | Yokohama | WIN Points |
| 1931-07-23 | Don Levy | LLDWWD | WIN Points |
|
| 1931-07-16 | Don Levy | LLLDWW | DRAW Points |
|
| 1931-06-08 | Jack Clayton | LLDWWD | WIN Points |
|
| 1931-06-04 | Toshio Kanai | L | WIN Points |
|
| 1931-05-21 | Jack Clayton | WLLDWW | DRAW Points |
|
| 1931-05-10 | Sueo Hirakawa | LWDWLL | DRAW Points |
|
| 1931-05-03 | Bobby Wills | WLLLWW | WIN KO |
|
| 1931-04-26 | Bobby Wills | WWLLLW | Kobe | LOST |
| 1931-04-04 | Sueo Hirakawa | LLLWDW | WIN Points |
|
| 1931-03-12 | Sueo Hirakawa | WWLLLW | DRAW Points |
|
| 1931-03-08 | Bobby Wills | LWWLL | Osaka | WIN Points |
| 1931-03-04 | Bobby Wills | LWWL | WIN KO |
|
| 1931-02-26 | Toshio Kanai | debut | WIN Points |
|
| 1931-02-16 | Sueo Hirakawa | DLWWLL | WIN Points |
|
| 1931-02-10 | Bobby Wills | LWW | WIN Technical knockout |
|
| 1931-01-27 | Sueo Hirakawa | LDLWWL | WIN Points |
|
| 1930-10-25 | Tokichi Kawata | LWWWWD | LOST Points |
|
| 1930-07-25 | Kohala Lion | debut | Houston Arena, Honolulu | DRAW Points |
| 1930-06-20 | Pukapuka Panis | W | Honolulu | WIN Points |
| 1930-05-24 | Joe Borola | LLLWLW | White Sox Park, Los Angeles | LOST Points |
| 1930-05-21 | Sammy Compagno | WDLLLW | National Hall, San Francisco | WIN Points |
| 1930-04-30 | Young Alde | WLWWLL | National Hall, San Francisco | LOST Points |
| 1930-04-23 | Sammy Compagno | DWLWDL | National Hall, San Francisco | WIN Points |
| 1930-04-17 | Johnny Reno | DWWWWW | Stockton | LOST Points |
| 1930-03-20 | Mike Brennan | WWWWWW | Stockton | LOST Points |
| 1930-03-12 | Phil Guerrera | DWWWLD | National Hall, San Francisco | LOST Points |
| 1930-03-06 | Mike Brennan | WWWWWW | Stockton | LOST Points |
| 1930-02-22 | Barney Ross | WWWWWW | Recreation Park, San Francisco | LOST Points |
| 1930-02-19 | Joe Airse | debut | National Hall, San Francisco | WIN Points |
| 1930-01-31 | Phil Guerrera | LLLDWW | L-st Arena, Sacramento | LOST Points |
| 1930-01-21 | Lou Zimmerman | WLWLLL | National Hall, San Francisco | WIN Points |
| 1930-01-15 | Lou Zimmerman | WWLWLL | National Hall, San Francisco | WIN Points |
| 1929-12-13 | Charlie Hernandez | WWDDDW | Dreamland Auditorium, San Francisco | LOST Points |
| 1929-12-11 | Harry Stone | LLLLD | National Hall, San Francisco | DRAW Points |
| 1929-12-06 | Billy Bonillas | WDLDDL | Memorial Auditorium, Sacramento | WIN Points |
| 1929-11-27 | Lou Zimmerman | WWWWLW | National Hall, San Francisco | WIN Points |
| 1929-10-23 | Babe Marino | WWWWWL | National Hall, San Francisco | LOST Points |
| 1929-10-09 | Eddie Edelman | LWWWWL | National Hall, San Francisco | DRAW Points |
| 1929-10-02 | Lou Ferrando | WLDW | National Hall, San Francisco | WIN Points |
| 1929-09-25 | Charlie Hernandez | WWWWDD | National Hall, San Francisco | DRAW Points |
| 1929-09-11 | Charlie Hernandez | WWWWWD | National Hall, San Francisco | DRAW Points |
| 1929-09-04 | Billy Gibson | debut | National Hall, San Francisco | WIN Technical knockout |
| 1929-08-28 | Lou Ferrando | WL | National Hall, San Francisco | DRAW Points |