Billy O'Brien boxer
- bouts
- 7
- won
- 3
- lost
- 3
- draw
- 1
- Status
- inactive
- Division
- featherweight
- Debut
- 1943-10-02
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Australia
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1946-11-09 | Tommy Farr | LWWLD | West Melbourne Stadium, Melbourne | LOST Points |
| 1946-10-26 | Arch Dowlan | LWD | West Melbourne Stadium, Melbourne | WIN Points |
| 1946-05-04 | Mick Foster | debut | West Melbourne Stadium, Melbourne | LOST Points |
| 1946-04-27 | Young Kelly | W | West Melbourne Stadium, Melbourne | WIN Points |
| 1946-04-06 | Charlie Cook | debut | West Melbourne Stadium, Melbourne | DRAW Points |
| 1946-03-16 | Young Scouller | debut | West Melbourne Stadium, Melbourne | WIN Points |
| 1943-10-02 | Tom Harkings | W | West Melbourne Stadium, Melbourne | LOST Points |