Billy Duffy boxer
- bouts
- 20
- won
- 15
- lost
- 2
- draw
- 3
- Status
- inactive
- Division
- welterweight
- Debut
- 1940-07-18
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1942-06-26 | Phil Enzenga | DWLDLW | Foreman Field, Naval Base, Norfolk | WIN Points |
| 1942-03-30 | Manuel Rosa | WDLLLL | Turner's Arena, Washington | DRAW Points |
| 1942-03-23 | Sammy Daniels | LLWDW | Turner's Arena, Washington | WIN Points |
| 1941-11-28 | Pete Muscarnera | WWDDLL | Madison Square Garden, New York | DRAW Points |
| 1941-04-22 | Marty Servo | WWWWWW | Foot Guard Hall, Hartford | LOST Points |
| 1941-04-01 | Ray Bonti | LWWWLD | New York Coliseum, Bronx | WIN Points |
| 1941-02-28 | Artie Dorrell | WWWDWW | Madison Square Garden, New York | LOST Technical knockout |
| 1941-01-21 | Tommy Zano | WLWDWW | New York Coliseum, Bronx | WIN Points |
| 1941-01-08 | Mike Angieri | WLLWWW | Stanley Arena, New Britain | DRAW Points |
| 1940-12-17 | Neil Miller | LLWDWD | Westchester County Center, White Plains | WIN Points |
| 1940-11-19 | Caesar Ferro | LWLLWW | New York Coliseum, Bronx | WIN Points |
| 1940-11-14 | Frankie Young | DDDWWL | Arena, New Haven | WIN Points |
| 1940-09-23 | John Henry Eskew | WWWWWW | Valley Arena, Holyoke | WIN Unanimous decision |
| 1940-09-12 | Al Castonguay | LLLLLL | Randolph-Clowes Stadium, Waterbury | WIN Points |
| 1940-09-09 | Doug Murchie | LWWLWL | Valley Arena, Holyoke | WIN Unanimous decision |
| 1940-08-26 | Leo Sawicki | LLWLLW | Valley Arena, Holyoke | WIN Points |
| 1940-08-20 | Frankie Young | DDDDWW | Bulkeley Stadium, Hartford | WIN Points |
| 1940-08-08 | Billy Brown | WWDL | Randolph-Clowes Stadium, Waterbury | WIN Points |
| 1940-07-25 | Ray Sockolowski | WWWWD | Thompsonville | WIN Points |
| 1940-07-18 | Tom Collins | L | Randolph-Clowes Stadium, Waterbury | WIN Points |