Shamus O'Brien boxer
- bouts
- 25
- won
- 15
- lost
- 8
- draw
- 1
- Status
- inactive
- Division
- lightweight
- Debut
- 1926-01-15
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1930-07-11 | Orin Mack | WDDWL | O.K. Hall, Prescott | NC No Contest |
| 1930-01-31 | Tommy Smith | debut | Madison Square Garden, Phoenix | LOST KO |
| 1929-11-22 | Mike Stankovich | LWWWDL | Miami | LOST Technical knockout |
| 1929-10-25 | Ramon Torres | debut | Madison Square Garden, Phoenix | WIN Points |
| 1929-07-04 | Kid Olea | LWW | Warren Park, Bisbee | WIN KO |
| 1929-06-14 | Mike Stankovich | WWLWWW | Arcadia Hall, Phoenix | DRAW Points |
| 1928-12-07 | Rex Ripple | WLWLLL | Arcadia Hall, Phoenix | WIN Technical knockout |
| 1928-10-21 | Brooks Hooper | WWWLLW | Naco | LOST Points |
| 1928-06-26 | Jose Monzon | debut | Phoenix | WIN Points |
| 1928-01-20 | Jose Ramon Diaz | WWDLLL | Nogales | LOST KO |
| 1928-01-13 | Earl Stevens | LLLLDD | Phoenix | WIN KO |
| 1927-12-02 | Buck Simpson | LWWWWL | Phoenix | LOST Technical knockout |
| 1927-11-18 | Manuel Garcia | W | Phoenix | WIN Technical knockout |
| 1927-10-28 | Young Nino | DWLLDW | Phoenix | WIN Technical knockout |
| 1927-09-22 | Eddie Shannon | LDWWWW | Miami | WIN Technical knockout |
| 1927-08-19 | Quillo Garcia | DD | Phoenix | LOST Points |
| 1927-04-08 | Frankie Bray | LLWLWD | Phoenix | LOST Points |
| 1926-11-26 | Gene Watson | DLLLDW | Capital City Arena, Phoenix | LOST Points |
| 1926-06-18 | Rusty Ling | WWLDWW | Capital City Arena, Phoenix | WIN Points |
| 1926-06-04 | Young Brown | WLWLLL | Capital City Arena, Phoenix | WIN Points |
| 1926-05-21 | Joe Pimentel | WLDWLD | Capital City Arena, Phoenix | WIN Corner retirement |
| 1926-05-14 | Airplane Skelly | WLWLWD | Capital City Arena, Phoenix | WIN Points |
| 1926-04-30 | Leo Claro | LWLLWL | Capital City Arena, Phoenix | WIN Points |
| 1926-04-09 | Rusty Ling | WWLLWW | Capital City Arena, Phoenix | WIN Points |
| 1926-01-15 | Battling Siki | DLWDLL | Capital City Arena, Phoenix | WIN Points |
