| Copa Libertadores 1973 - Appearances as Referee |  |
 |
 |
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| 10/03/1973 | Oriente Petrolero | - | Jorge Wilstermann | 3:1 | - | - | 1 |
| 22/03/1973 | San Lorenzo | - | Jorge Wilstermann | 3:0 | - | - | - |
| Copa Libertadores 1973 - Appearances as Referee | |
|
|
||||
| 10/03/1973 | Oriente Petrolero | - | Jorge Wilstermann | 3:1 | - | - | 1 |
| 22/03/1973 | San Lorenzo | - | Jorge Wilstermann | 3:0 | - | - | - |
| Complete name: | César Augusto Orosco Guerrerom |
| Born: | 14/04/1930 |
| Place of birth: |
Peru |
| Nationality: |
Peru |