Jack O'Brien boxer
- bouts
- 2
- won
- 0
- lost
- 2
- draw
- 0
- Status
- inactive
- Division
- middleweight
- Debut
- 1947-01-22
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1947-06-04 | Ralph Kaplan | LWWLWD | Biscayne Arena, Miami | LOST KO |
| 1947-01-22 | Irving Marcus | WWWWLW | Civic Center Arena, Miami | LOST KO |