Johnny Mastro boxer
- bouts
- 8
- won
- 3
- lost
- 5
- draw
- 0
- Status
- inactive
- Division
- lightweight
- Debut
- 1929-12-05
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1933-07-11 | Al Celantano | LLLWWL | South Park Arena, Hartford | LOST Points |
| 1933-06-13 | Frankie Paul | WWWWL | Crystal Lake | LOST Points |
| 1932-10-13 | Johnny Pinkham | LWLWLD | Foot Guard Hall, Hartford | WIN Points |
| 1932-02-11 | Brownie Tucker | WLWLLW | Foot Guard Hall, Hartford | LOST Points |
| 1931-10-26 | Jackie Dillon | LLWWLL | Foot Guard Hall, Hartford | WIN Points |
| 1931-08-24 | Jackie Dillon | LLWLLW | Hurley Stadium, East Hartford | LOST Points |
| 1931-07-07 | Mike De Franco | debut | Hurley Stadium, East Hartford | WIN Technical knockout |
| 1929-12-05 | Johnny Londos | WL | Foot Guard Hall, Hartford | LOST Technical knockout |