Jack O'Brien boxeador
- luta
- 9
- vitória
- 1
- derrota
- 5
- empate
- 2
- Estado
- inactive
- divisão
- light heavyweight
- Estreia
- 1891-05-16
- Altura
- -
- Alcance
- -
- Idade
- -
- Born
- -
- Death
- -
- Nascimento
- Australia
| Data | Adversário | Últimos resultados dos adversários | Lugar | Resultado |
|---|---|---|---|---|
| 1905-07-25 | Bill Smith | WWWLWL | NSC Athletic Hall, Sydney | LOST Technical knockout |
| 1905-04-01 | Bill Smith | LWWWWL | Gaiety Athletic Hall, Sydney | LOST KO |
| 1901-01-21 | Harry Dawson | WWWLW | Gaiety Athletic Club, Sydney | NC |
| 1899-06-05 | Ted Arthur | debut | Oddfellows' Hall, Wyalong | DRAW Points |
| 1899-05-31 | Otto Cribb | WWWW | Alhambra AC,Haymarket, Sydney | LOST KO |
| 1898-06-18 | Sandy Ross | LLWD | Golden Gate A.C., Sydney | DRAW Points |
| 1896-11-07 | Jack Goggins | L | Victoria Hall, Melbourne | LOST Corner retirement |
| 1893-04-01 | Bill Heffernan | LWWW | LOST KO |
|
| 1891-05-16 | Fred Preston | debut | Federal Rink, Albury | WIN KO |