Johnny Duffy boxeador
- combates
- 8
- ganados
- 1
- perdidos
- 7
- empates
- 0
- Estado
- inactive
- División
- lightweight
- Debut
- 1916-08-04
- Altura
- -
- Alcanza
- -
- Edad
- -
- Nacimiento
- -
- Muerte
- -
- Nacionalidad
- USA
| Fecha | Oponente | Resultados últimos oponentes | Lugar | Resultado |
|---|---|---|---|---|
| 1922-03-09 | Paul Fargo | WWWLLW | Columbus Hall, Yonkers | LOST KO |
| 1921-06-04 | Frankie Ryan | LW | Queensboro Stadium, Long Island City, Queens | LOST Technical knockout |
| 1921-04-11 | Johnny Donovan | LLDWWW | Grand Opera House, Boston | LOST KO |
| 1920-10-19 | Tony Peters | DLW | Commonwealth Sporting Club, New York | LOST Technical knockout |
| 1920-10-12 | George Gale | W | Woodhaven SC, Woodhaven, Queens | LOST Technical knockout |
| 1920-09-25 | Harry Condon | LWLLLW | Huntington S.C. Clubrooms, Huntington Station | LOST Points |
| 1920-01-15 | Panama George Dixon | WWWWD | Armory A.A. Hall, Bridgeport | LOST KO |