| Copa Libertadores 1977 - Appearances as Referee |  |
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 |
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| 01/04/1977 | Everton | - | Universidad de Chile | 2:0 | - | - | - |
| 27/04/1977 | Atlético Nacional | - | Deportivo Cali | 0:3 | - | - | - |
| 11/09/1977 | Cruzeiro | - | Boca Juniors | 1:0 | - | - | - |
| Copa Libertadores 1977 - Appearances as Referee | |
|
|
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| 01/04/1977 | Everton | - | Universidad de Chile | 2:0 | - | - | - |
| 27/04/1977 | Atlético Nacional | - | Deportivo Cali | 0:3 | - | - | - |
| 11/09/1977 | Cruzeiro | - | Boca Juniors | 1:0 | - | - | - |
| Complete name: | César Augusto Orosco Guerrerom |
| Born: | 14/04/1930 |
| Place of birth: |
Peru |
| Nationality: |
Peru |