Jack O'Brien boxer
- bouts
- 3
- won
- 1
- lost
- 2
- draw
- 0
- Status
- inactive
- Division
- lightweight
- Debut
- 1920-11-30
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1920-12-28 | Don McIntyre | W | Aberdeen | LOST Technical knockout |
| 1920-12-09 | Finn Kid | debut | Aberdeen | WIN Points |
| 1920-11-30 | Joe Hoff | DWWLL | Athletic Club, Aberdeen | LOST Points |