Guillermo Alvarez (Billy Alvarez) boxer
- bouts
- 8
- won
- 2
- lost
- 6
- draw
- 0
- Status
- inactive
- Division
- bantamweight
- Debut
- 1928-04-22
- Height
- -
- Reach
- -
- Age
- -
- Born
- 1911-02-11
- Death
- -
- Nationality
- Puerto Rico
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1931-05-10 | Jaime Vera | debut | San Juan Stadium, San Juan | WIN |
| 1929-08-23 | Victor Montalvo | DWDL | Victory Garden Stadium, San Juan | LOST Technical knockout |
| 1929-05-17 | Vicente Abadia | debut | Victory Garden Stadium, San Juan | LOST Points |
| 1929-03-22 | Luciano Rosario | WD | Victory Garden Stadium, San Juan | LOST |
| 1929-02-08 | Ramon Rodriguez | WWWLLW | Victory Garden Stadium, San Juan | LOST Points |
| 1928-12-09 | Luis M Caballero | WDWLWW | Caguas Stadium, Caguas | LOST Technical knockout |
| 1928-06-17 | Jose Vidal | W | Balboa Stadium, Mayaguez | WIN Technical knockout |
| 1928-04-22 | Pedro Rodriguez Nieves | debut | Loubriel Stadium, Bayamon | LOST Points |
