Sergio Alfonso boxer
- bouts
- 1
- won
- 0
- lost
- 1
- draw
- 0
- Status
- inactive
- Division
- featherweight
- Debut
- 1931-02-15
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Cuba
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1931-02-15 | Buenaventura Gomez | LLDL | Miramar Garden, Havana | LOST KO |