| Copa Libertadores 2003 - Appearances as Referee |  |
 |
 |
||||
| 26/02/2003 | Emelec | - | Deportivo Cali | 0:4 | 3 | - | - |
| 19/03/2003 | Peñarol | - | Bolívar | 4:0 | 1 | - | 1 |
| 03/04/2003 | The Strongest | - | Cruz Azul | 2:1 | 5 | - | 1 |
| Copa Libertadores 2003 - Appearances as Referee | |
|
|
||||
| 26/02/2003 | Emelec | - | Deportivo Cali | 0:4 | 3 | - | - |
| 19/03/2003 | Peñarol | - | Bolívar | 4:0 | 1 | - | 1 |
| 03/04/2003 | The Strongest | - | Cruz Azul | 2:1 | 5 | - | 1 |
| Complete name: | Guido Augustin Aros Alvarado |
| Born: | 23/11/1965 |
| Place of birth: |
Chile |
| Nationality: |
Chile |