Jack O'Brien boxer
- bouts
- 3
- won
- 1
- lost
- 2
- draw
- 0
- Status
- inactive
- Division
- welterweight
- Debut
- 1951-05-25
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1956-04-11 | Ray Strong | DLWLLL | Fairgrounds Arena, Boise | WIN Technical knockout |
| 1954-03-18 | Tony Greb | DWWWWD | Exhibition Gardens, Vancouver | LOST KO |
| 1951-05-25 | Blackie Vanderveer | WLLLLW | Riverside Arena, Boise | LOST Technical knockout |