Sergio Negro Alfaro boxeur
- combats
- 15
- gagnés
- 8
- perdus
- 7
- match nul
- 0
- Situation
- inactive
- Division
- featherweight
- Début
- 1955-12-03
- Taille
- -
- Allonge
- -
- âge
- -
- Né
- -
- Décès
- -
- Nationalité
- Mexico
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| Date | Adversaire | Derniers résultats des adversaires | Lieu | Result |
|---|---|---|---|---|
| 1961-02-22 | Norberto Contreras | LL | Mexico City | LOST KO |
| 1959-05-23 | Antonio Sarmina | W | Mexico City | LOST Points |
| 1959-04-11 | Bernabe Escobar | WLD | Mexico City | WIN Points |
| 1958-10-03 | Miguel Segundo | LLWWLL | Cuernavaca | WIN |
| 1958-02-12 | Jaibo Carranza | debut | Mexico City | LOST KO |
| 1957-10-26 | Alfredo Del Castillo | debut | Mexico City | WIN KO |
| 1957-02-07 | Mauro Vazquez | W | Puebla | LOST KO |
| 1956-09-22 | Aurelio Mora | WWLW | Mexico City | LOST Technical knockout |
| 1956-07-28 | Nacho Rosales | WLWWL | Mexico City | LOST KO |
| 1956-06-16 | Pancho Rubio | L | Mexico City | WIN Points |
| 1956-03-25 | Enrique Moreno | D | Plaza de Toros, Mexico City | WIN KO |
| 1956-02-29 | Emilio Olivares | W | Mexico City | LOST KO |
| 1956-01-22 | Antonio Coria | DLWWWL | El Toreo de Cuatro Caminos, Mexico City | WIN Points |
| 1955-12-17 | Panchito Espinosa | debut | Arena Coliseo, Mexico City | WIN Points |
| 1955-12-03 | Tony Lopez | debut | Mexico City | WIN Points |
