Roberto Sierra boxeador
- combates
- 10
- ganados
- 4
- perdidos
- 6
- empates
- 0
- Estado
- inactive
- División
- super lightweight
- Debut
- 1994-01-21
- Altura
- 5′ 5″/165cm
- Alcanza
- -
- Edad
- -
- Nacimiento
- 1974-12-04
- Muerte
- -
- Nacionalidad
- Puerto Rico
| Fecha | Oponente | Resultados últimos oponentes | Lugar | Resultado |
|---|---|---|---|---|
| 1996-12-14 | Joel Casamayor | WW | Convention Center, Atlantic City | LOST KO |
| 1996-10-04 | Lemuel Nelson | WWWWWW | Madison Square Garden Theater, New York | LOST Majority decision |
| 1996-04-26 | Johnny De La Rosa | LWWLWL | Music Fair, Westbury | WIN Points |
| 1995-11-15 | Joe Sammambo | D | Robert Treat Hotel, Newark | WIN Unanimous decision |
| 1995-09-30 | Freddy Curiel | WWWWWW | Ballys Park Place Hotel Casino, Atlantic City | LOST Points |
| 1994-09-24 | Luis Rosado | W | Ballys Park Place Hotel Casino, Atlantic City | LOST Technical knockout |
| 1994-07-23 | Chris Christodoulou | WWWW | Center City, Schenectady | WIN Majority decision |
| 1994-06-28 | Freddy Curiel | L | Meadowlands Convention Centre, Secaucus | LOST Split-decision |
| 1994-03-04 | Jamar Carter | debut | Hotel Pennsylvania, New York | LOST Unanimous decision |
| 1994-01-21 | Pedro Cotto | LLLW | Hotel Pennsylvania, New York | WIN Points |