Bill O'Brien boxer
- bouts
- 15
- won
- 5
- lost
- 8
- draw
- 2
- Status
- inactive
- Division
- welterweight
- Debut
- 1931-05-30
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Australia
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1936-11-14 | Keith Williamson | LDLWWW | Sydney Stadium, Sydney | LOST Points |
| 1936-02-01 | Bluey Clifton | WLWWWL | North Sydney Stadium, Sydney | LOST Points |
| 1935-09-28 | Nobby Caldwell | DWLWWW | North Sydney Stadium, Sydney | LOST Points |
| 1935-09-14 | Nobby Caldwell | WDDWLW | North Sydney Stadium, Sydney | LOST KO |
| 1935-06-22 | Tiger Farrell | WWWLWW | North Sydney Stadium, Sydney | WIN Points |
| 1935-06-15 | Jack Scruse | LDDDLL | North Sydney | WIN Points |
| 1935-04-30 | Girr Costigan | debut | Bronte Stadium, Sydney | WIN Points |
| 1934-08-04 | Art Menchin | debut | Memorial Hall, Mudgee | WIN Points |
| 1934-07-17 | Ern Phillips | DDW | Bronte Stadium, Sydney | LOST Points |
| 1933-06-21 | E Woods | debut | The Theatre, Gulgong | WIN KO |
| 1932-12-10 | Dave McQuaker | LL | Carlton Stadium, Sydney | LOST Points |
| 1931-08-15 | Charlie Roland | W | Sydney Stadium, Sydney | LOST Points |
| 1931-07-11 | Bob Aiken | WL | Sydney Stadium, Sydney | LOST Points |
| 1931-06-09 | Gordon Kelso | D | Leichhardt Stadium, Sydney | DRAW Points |
| 1931-05-30 | Gordon Kelso | debut | Sydney Stadium, Sydney | DRAW Points |