Johnny O'Brien boxer
- bouts
- 10
- won
- 8
- lost
- 2
- draw
- 0
- Status
- inactive
- Division
- middleweight
- Debut
- 1953-11-23
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1957-08-28 | Andy Chaney | WWLLLL | Arena, Boston | LOST KO |
| 1956-11-19 | Milton Epps | DW | Valley Arena, Holyoke | WIN Unanimous decision |
| 1956-10-17 | Al Palmer | debut | Mechanics Building, Boston | WIN KO |
| 1954-04-24 | Wilfred Picot | WLWWWW | Boston Garden, Boston | LOST Technical knockout |
| 1954-03-08 | Johnny Green | WL | Boston Garden, Boston | WIN Split-decision |
| 1954-01-18 | Eddie Andrews | LWWWWW | Boston Garden, Boston | WIN Unanimous decision |
| 1953-12-26 | Gordon Hill | L | Mechanics Building, Boston | WIN Points |
| 1953-12-12 | Gerry Tessier | WWWWLL | Boston Garden, Boston | WIN Points |
| 1953-11-30 | Mario Sarro | WWWWW | Mechanics Building, Boston | WIN Technical knockout |
| 1953-11-23 | Paul Cashman | WLLLLL | Mechanics Building, Boston | WIN Technical knockout |