Jack Duffy boxer
- bouts
- 15
- won
- 9
- lost
- 3
- draw
- 3
- Status
- inactive
- Division
- welterweight
- Debut
- 1935-07-15
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1936-06-29 | Johnny Santo | WLLWWL | Carlin's Park, Baltimore | LOST Points |
| 1936-06-22 | Ritchie Mack | WDLDWD | Griffith Stadium, Washington | LOST Split-decision |
| 1936-05-25 | Bobby Wilson | WLWLWL | Griffith Stadium, Washington | WIN Points |
| 1936-04-07 | Bobby Wilson | LWLWLW | Turner's Arena, Washington | WIN Technical knockout |
| 1936-01-02 | Charley Thompson | LWDLWL | Palace Theater, Baltimore | LOST Technical knockout |
| 1935-10-28 | Mickey McQuade | debut | Carlin's Park, Baltimore | WIN KO |
| 1935-10-14 | George Esrick | LLLWDW | Carlin's Park, Baltimore | WIN Technical knockout |
| 1935-10-07 | Pete Lasick | WWWWDW | Carlin's Park, Baltimore | WIN Points |
| 1935-09-16 | King Morocco | LWW | Carlin's Park, Baltimore | WIN Technical knockout |
| 1935-09-02 | Charley Rondo | WWWWDL | Carlin's Park, Baltimore | WIN KO |
| 1935-08-26 | Charley Rondo | WWWWWD | Carlin's Park, Baltimore | WIN Points |
| 1935-08-19 | Larry Marino | LWWLWW | Oriole Park, Baltimore | DRAW Points |
| 1935-08-15 | Pete Lasick | WWWWWW | Oriole Park, Baltimore | DRAW Points |
| 1935-07-29 | Henry Grogan | L | Carlin's Park, Baltimore | WIN KO |
| 1935-07-15 | Billy Powell | WWWWW | Carlin's Park, Baltimore | DRAW Points |