Gene O'Brien (Eugene) pugile
- combattimenti
- 9
- vinto
- 3
- perduto
- 5
- pareggiare
- 1
- Stato
- inactive
- Divisione
- middleweight
- Debutto
- 1944-08-11
- Altezza
- -
- Arrivare a
- -
- Età
- -
- Nato
- -
- Morte
- -
- Nazionalità
- USA
| Data | Avversario | Ultimi risultati degli avversari | Luogo | Risultato |
|---|---|---|---|---|
| 1946-10-07 | Robert Smith | WLD | Coliseum Bowl, San Francisco | LOST Points |
| 1946-09-27 | Bob Smith | WLLLLL | National Hall, San Francisco | LOST KO |
| 1945-03-12 | Al McDonald | WLLLLL | Civic Auditorium, San Francisco | LOST Technical knockout |
| 1945-03-09 | Teddy Allen | LL | National Hall, San Francisco | DRAW Points |
| 1944-10-06 | Bob Smith | LWLLLL | National Hall, San Francisco | WIN Points |
| 1944-10-02 | Billy Mayfield | DWWW | Civic Auditorium, San Francisco | LOST Technical knockout |
| 1944-09-22 | Nick Venegas | debut | National Hall, San Francisco | WIN KO |
| 1944-09-11 | Bob Smith | LLWLLL | Civic Auditorium, San Francisco | WIN Technical knockout |
| 1944-08-11 | Reuben Flores | debut | National Hall, San Francisco | LOST Technical knockout |