Jack Sylvester boxer
- bouts
- 16
- won
- 2
- lost
- 12
- draw
- 2
- Status
- inactive
- Division
- light heavyweight
- Debut
- 1934-12-06
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1942-02-24 | Tommy Samon | debut | Legion Arena, Saint Petersburg | LOST KO |
| 1939-03-14 | Star Harvey | DW | Futuristic Ballroom, Milwaukee | LOST Technical knockout |
| 1939-03-01 | Marv Wason | WLLWWW | Auditorium, Saint Paul | LOST Points |
| 1937-10-18 | Emil Campagna | WWWWLL | Marigold Gardens, Chicago | LOST KO |
| 1937-09-24 | Billy Palmer | WWWW | White City Arena, Chicago | LOST Technical knockout |
| 1937-05-25 | Art Johnson | WWDDDW | Olympic Auditorium, Los Angeles | LOST Technical knockout |
| 1937-01-11 | Stan Goral | WDLLWD | Broadway Auditorium, Buffalo | DRAW Points |
| 1936-12-29 | Leroy Smith | LWLWLL | Convention Hall, Rochester | LOST Points |
| 1936-11-16 | Ralph DeJohn | WWWWWW | Broadway Auditorium, Buffalo | LOST Points |
| 1936-11-09 | Fanis Tzanetopoulos | WLLLLL | Broadway Auditorium, Buffalo | LOST Points |
| 1936-10-05 | Eddie Hocevar | WWL | Broadway Auditorium, Buffalo | LOST Points |
| 1936-09-25 | Tony Tozzo | LWDWWL | Elmwood Music Hall, Buffalo | DRAW Points |
| 1936-09-23 | Red Monroe | debut | Maple Leaf Gardens, Toronto | WIN Points |
| 1936-09-03 | Tiger Worth | LLW | Offermann Stadium, Buffalo | LOST Points |
| 1936-03-04 | Frank Vogel | DWLLWD | Eagles Club, Milwaukee | WIN Points |
| 1934-12-06 | Harvey Diesch | DW | Auditorium, Milwaukee | LOST Points |