Billy O'Brien boxeador
- luta
- 7
- vitória
- 3
- derrota
- 3
- empate
- 1
- Estado
- inactive
- divisão
- featherweight
- Estreia
- 1943-10-02
- Altura
- -
- Alcance
- -
- Idade
- -
- Born
- -
- Death
- -
- Nascimento
- Australia
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| Data | Adversário | Últimos resultados dos adversários | Lugar | Resultado |
|---|---|---|---|---|
| 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 |