Johnny Duffy boxer
- bouts
- 8
- won
- 1
- lost
- 7
- draw
- 0
- Status
- inactive
- Division
- lightweight
- Debut
- 1916-08-04
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 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 |
| 1916-08-04 | Tapper Reilly | debut | Brown's Gym A.A., Far Rockaway, Queens | WIN Technical knockout |