Billy O'Brien boxer
- bouts
- 6
- won
- 3
- lost
- 2
- draw
- 1
- Status
- inactive
- Division
- lightweight
- Debut
- 1933-01-02
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1936-03-02 | Nat Bor | WWWWWW | Arena, Lynn | LOST |
| 1933-08-02 | Bert Sciarra | DWWLDW | Pawcatuck | WIN Points |
| 1933-07-26 | Solly Ambrosio | WWLLLL | South Park Arena, Hartford | WIN Points |
| 1933-07-12 | Bert Sciarra | DDWWLD | Pawcatuck | LOST Points |
| 1933-01-30 | Solly Ambrosio | LLWWWW | Valley Arena, Holyoke | WIN Points |
| 1933-01-02 | Angelo Manna | W | Valley Arena, Holyoke | DRAW Points |