Jack O'Brien boxer
- bouts
- 2
- won
- 0
- lost
- 2
- draw
- 0
- Status
- inactive
- Division
- welterweight
- Debut
- 1922-08-23
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Australia
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1926-01-29 | Wally Fitzgerald | DWLWLW | Leichhardt Stadium, Sydney | LOST Corner retirement |