Billy O'Brien boxer
- bouts
- 14
- won
- 5
- lost
- 8
- draw
- 1
- Status
- inactive
- Division
- welterweight
- Debut
- 1929-09-23
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Canada
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1933-11-03 | Emil Lust | WWWLWW | Medicine Hat | LOST Points |
| 1933-09-06 | Billy Penfold | WWWL | Amphitheatre Rink, Winnipeg | LOST Points |
| 1933-08-16 | Eddie Kline | debut | Amphitheatre Rink, Winnipeg | WIN KO |
| 1933-08-04 | Laurie Peppin | WLWLWW | Regina | LOST Technical knockout |
| 1933-04-19 | Cecil Lewsey | WL | Amphitheatre Rink, Winnipeg | WIN Points |
| 1932-11-07 | Billy Penfold | W | Auditorium, Winnipeg | LOST Points |
| 1932-09-13 | Billy Penfold | debut | Amphitheatre Rink, Winnipeg | LOST Points |
| 1931-08-17 | Laurie Peppin | LWWWWW | Saskatoon | LOST Points |
| 1930-12-09 | Joe Wakeham | LLLWLW | Playhouse Theatre, Winnipeg | DRAW Points |
| 1930-08-19 | Paul Schaeffer | WDLW | Olympic Rink, Winnipeg | LOST Technical knockout |
| 1930-08-06 | Eddie Fahlgren | debut | Amphitheatre Rink, Winnipeg | WIN Points |
| 1930-05-16 | Joe Wakeham | LWLLLW | Amphitheatre Rink, Winnipeg | WIN Points |
| 1929-10-16 | Paul Schaeffer | debut | Amphitheatre Rink, Winnipeg | LOST KO |
| 1929-09-23 | Pat Dugan | L | Amphitheatre Rink, Winnipeg | WIN Technical knockout |