Dennis O'Brien boxer
- bouts
- 4
- won
- 3
- lost
- 1
- draw
- 0
- Status
- inactive
- Division
- welterweight
- Debut
- 1953-05-09
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1953-12-04 | Bobby Perry | WWWLDD | Bangor | WIN Points |
| 1953-05-19 | Ken Carpenter | LWWLLL | Portland | LOST Points |
| 1953-05-12 | John Pemberton | L | Portland | WIN KO |
| 1953-05-09 | John Pemberton | debut | Bangor | WIN Points |