| Copa Libertadores 1998 - Appearances as Referee |  |
 |
 |
||||
| 24/02/1998 | Colo-Colo | - | Universidad Católica | 3:2 | - | - | - |
| 21/07/1998 | River Plate | - | Vasco da Gama - RJ | 1:1 | 6 | - | - |
| Copa Libertadores 1998 - Appearances as Referee | |
|
|
||||
| 24/02/1998 | Colo-Colo | - | Universidad Católica | 3:2 | - | - | - |
| 21/07/1998 | River Plate | - | Vasco da Gama - RJ | 1:1 | 6 | - | - |
| Complete name: | Guido Augustin Aros Alvarado |
| Born: | 23/11/1965 |
| Place of birth: |
Chile |
| Nationality: |
Chile |