Billy O'Brien boxer
- bouts
- 3
- won
- 0
- lost
- 3
- draw
- 0
- Status
- inactive
- Division
- featherweight
- Debut
- 1899-06-01
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1907-01-10 | Joe Alton | WWWDW | East Pittsburgh | LOST Technical knockout |
| 1904-07-26 | Eddie Kelly | WDLWWW | Buffalo | LOST Points |
| 1899-06-01 | Eddie Kennedy | WDWWLW | Pittsburgh | LOST KO |