Jimmy O'Brien boxer
- bouts
- 41
- won
- 12
- lost
- 20
- draw
- 9
- Status
- inactive
- Division
- featherweight
- Debut
- 1920-01-21
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1938-08-07 | Billy Hyde | WDLWLW | Cooke City | LOST KO |
| 1935-12-12 | Sidney Brent | DWLWLL | Greenwich Coliseum, Tacoma | LOST KO |
| 1932-05-18 | Curly Cox | W | Civic Ice Arena, Seattle | LOST Points |
| 1932-05-09 | Torchy Red Yarnell | WWWWWL | Auditorium, Portland | LOST KO |
| 1932-04-26 | Red A. Stanley | WLLDLL | Auditorium, Portland | LOST Points |
| 1931-03-14 | Frankie Riviera | debut | Main Street Athletic Club, Los Angeles | LOST Points |
| 1930-02-07 | Bud Bryant | LWDLWW | Blue Moose Theatre, Marshfield | LOST KO |
| 1929-08-08 | Sailor Jimmy Lucas | LWWDWD | Aberdeen | LOST KO |
| 1928-10-15 | Don Edwards | WWW | Auditorium, Wenatchee | LOST Points |
| 1928-01-26 | Bobby Herman | WLWDWW | Stockton | LOST Technical knockout |
| 1927-09-26 | Joe Starkovitch | DDWW | Auditorium, Wenatchee | WIN Points |
| 1927-09-06 | Sammy Rice | LDLLLW | Forman's Arena, San Jose | LOST Points |
| 1927-08-23 | Joe Montes | WWLWLW | Forman's Arena, San Jose | DRAW Points |
| 1927-03-11 | Billy LeFlore | WWLLWL | Watsonville | LOST KO |
| 1926-11-23 | Mickey O'Brien | WWWWDW | San Jose | WIN KO |
| 1926-10-19 | Gene Coulon | LLDWWL | San Jose | DRAW Points |
| 1926-10-05 | Attilio Bindella | LLWLLD | Forman's Arena, San Jose | WIN Points |
| 1926-09-22 | Lou Rickard | DLLWWW | Auditorium, Oakland | LOST Points |
| 1926-09-01 | Jack Flynn | LLLLLW | Auditorium, Oakland | WIN Points |
| 1926-08-30 | Sammy Rice | WLL | San Jose | DRAW Points |
| 1926-08-18 | Frankie Smith | LDWWWL | Auditorium, Oakland | DRAW Points |
| 1926-07-13 | Mickey Flannigan | W | San Jose | WIN Technical knockout |
| 1926-06-15 | Fred Ilio | debut | San Jose | DRAW Points |
| 1926-05-21 | Joe French | LLWLLW | San Jose | LOST KO |
| 1926-05-04 | Ricardo Ortega | WL | San Jose | WIN KO |
| 1926-01-12 | Jack Kirk | LLWLWL | San Jose | DRAW Points |
| 1925-12-15 | Ray Smiley | WWLLLW | East Side Arena, San Jose | WIN KO |
| 1925-11-24 | Dutch Murphy | debut | East Side Arena, San Jose | WIN Technical knockout |
| 1924-02-26 | Jack Richmond | DLDLWD | Crystal Pool, Seattle | DRAW Points |
| 1924-02-12 | Freddie Mack | WWWL | Crystal Pool, Seattle | LOST KO |
| 1924-01-31 | Phil Sheridan | WLWWL | Eagles Hall, Tacoma | DRAW Points |
| 1924-01-22 | Jerry Clark | LDLDD | Crystal Pool, Seattle | WIN KO |
| 1924-01-08 | Roy Small | WWWWLW | Crystal Pool, Seattle | LOST KO |
| 1922-11-02 | Jimmy Casey | DW | East Side Arena, San Jose | WIN Technical knockout |
| 1922-10-05 | Jimmy Casey | debut | West Side Arena, San Jose | DRAW Points |
| 1922-05-23 | Red Lewis | WWLWD | Garibaldi Hall, San Francisco | LOST KO |
| 1922-04-26 | Bob Turney | LL | Association Club, San Francisco | LOST KO |
| 1921-10-07 | Jack Grande | W | Dreamland Rink, San Francisco | LOST KO |
| 1920-04-10 | Cyclone Edwards | debut | Eureka | WIN Points |
| 1920-01-28 | Dan Cole | debut | Association Club, San Francisco | LOST KO |
| 1920-01-21 | Joe Burns | LDLLLL | Association Club, San Francisco | WIN Points |