| Copa Libertadores 1973 - Appearances as Referee |  |
 |
 |
||||
| 12/03/1973 | San Lorenzo | - | River Plate | 1:0 | - | - | - |
| 15/03/1973 | Club Olimpia | - | Sporting Cristal | 1:0 | - | - | 1 |
| Copa Libertadores 1973 - Appearances as Referee | |
|
|
||||
| 12/03/1973 | San Lorenzo | - | River Plate | 1:0 | - | - | - |
| 15/03/1973 | Club Olimpia | - | Sporting Cristal | 1:0 | - | - | 1 |
| Complete name: | Roberto Osvaldo Barreiro |
| Born: | |
| Place of birth: |
Argentina |
| Nationality: |
Argentina |