Juan Sierra boxer
- bouts
- 8
- won
- 5
- lost
- 2
- draw
- 1
- Status
- inactive
- Division
- featherweight
- Debut
- 1924-01-12
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- Peru
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1931-11-15 | Kid Linares | LLLLLL | Arequipa | WIN Points |
| 1924-11-16 | K .O. Pacheco | LDWWD | Ring Aire Libre, Lima | WIN Points |
| 1924-11-09 | Genaro Vallejos | LWLLLW | Ring Aire Libre, Lima | WIN |
| 1924-06-19 | Abraham Arbe | W | Ring Aire Libre, Lima | LOST Points |
| 1924-05-04 | Domingo Portales | LLLLWD | Ring Aire Libre, Lima | LOST Points |
| 1924-04-13 | Ernesto Moran | DDL | Ring Aire Libre, Lima | WIN Points |
| 1924-01-26 | Kid Diaz | D | Ring Aire Libre, Lima | WIN Points |
| 1924-01-12 | Domingo Portales | LLLLLW | Ring Aire Libre, Lima | DRAW Points |