Jack O'Brien boxer
- bouts
- 2
- won
- 0
- lost
- 2
- draw
- 0
- Status
- inactive
- Division
- -
- Debut
- 1894-07-06
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1901-05-27 | Tom Wilson | debut | Bar Harbor | LOST KO |
| 1894-07-06 | Bob Green | DWLDWW | Casino, Boston | LOST Points |