Battling Jack O'Brien boxeur
- combats
- 7
- gagnés
- 4
- perdus
- 1
- match nul
- 2
- Situation
- inactive
- Division
- flyweight
- Début
- 1927-10-04
- Taille
- -
- Allonge
- -
- âge
- -
- Né
- -
- Décès
- -
- Nationalité
- USA
| Date | Adversaire | Derniers résultats des adversaires | Lieu | Result |
|---|---|---|---|---|
| 1930-07-29 | Albert Allen | debut | Waterfront Park, Saint Petersburg | WIN Points |
| 1928-05-28 | Young Granado | WDWLWW | Cuban Club, Tampa | LOST KO |
| 1928-05-01 | Willie Green | LLDD | Waterfront Park, Saint Petersburg | WIN Points |
| 1928-01-10 | Joe Rodriguez | DWWWWW | Waterfront Park, Saint Petersburg | WIN Points |
| 1928-01-05 | Battling Oscar | LL | Waterfront Park, Saint Petersburg | WIN Technical knockout |
| 1927-10-04 | Oscar Ayala | debut | Waterfront Park, Saint Petersburg | DRAW Points |