Billy O'Brien boxeador
- combates
- 7
- ganados
- 0
- perdidos
- 7
- empates
- 0
- Estado
- inactive
- División
- lightweight
- Debut
- 1922-03-24
- Altura
- -
- Alcanza
- -
- Edad
- -
- Nacimiento
- -
- Muerte
- -
- Nacionalidad
- USA
| Fecha | Oponente | Resultados últimos oponentes | Lugar | Resultado |
|---|---|---|---|---|
| 1930-06-11 | Battling Nelson | WLLDLD | Electric Park, Waterloo | LOST |
| 1929-06-20 | Cecil Payne | LWWLWW | McCabe Arena, Dayton | LOST KO |
| 1929-02-04 | King Levinsky | DLWWWD | White City Arena, Chicago | LOST Technical knockout |
| 1929-01-01 | Dick Gore | DLWLWW | Jacksonville | LOST Points |
| 1927-11-15 | Wildcat Jack Murphy | DLWW | Auditorium, Milwaukee | LOST Technical knockout |
| 1927-09-16 | Billy Light | WWDWWW | Mills Stadium, Chicago | LOST Technical knockout |
| 1927-03-07 | Earl Barnhardt | debut | Janesville | LOST |
| 1925-08-06 | Al Russell | WLWLLL | Madison | LOST |
| 1924-07-04 | Billy Petrolle | WLWWWD | Carrington | LOST KO |
| 1922-12-20 | Frankie Osner | DWWWLL | Big Chief A.C., Chicago | LOST |
| 1922-11-27 | Bud Taylor | LWWLWW | Peoria | LOST |
| 1922-03-24 | King Rollo | D | U.S.S. Commodore, Chicago | LOST Points |