Billy O'Brien pugile
- combattimenti
- 7
- vinto
- 0
- perduto
- 7
- pareggiare
- 0
- Stato
- inactive
- Divisione
- lightweight
- Debutto
- 1922-03-24
- Altezza
- -
- Arrivare a
- -
- Età
- -
- Nato
- -
- Morte
- -
- Nazionalità
- USA
| Data | Avversario | Ultimi risultati degli avversari | Luogo | Risultato |
|---|---|---|---|---|
| 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 |
