| Copa Libertadores 2008 - Appearances as Assistant | ||||
| 14/02/2008 | Lanús | - | Danubio | 3:1 |
| 14/03/2008 | CF América | - | Universidad San Martín | 3:1 |
| 20/03/2008 | Flamengo RJ | - | Nacional | 2:0 |
| 08/04/2008 | Club San José | - | Cúcuta Deportivo | 2:4 |
| Copa Libertadores 2008 - Appearances as Assistant | ||||
| 14/02/2008 | Lanús | - | Danubio | 3:1 |
| 14/03/2008 | CF América | - | Universidad San Martín | 3:1 |
| 20/03/2008 | Flamengo RJ | - | Nacional | 2:0 |
| 08/04/2008 | Club San José | - | Cúcuta Deportivo | 2:4 |
| Complete name: | Antonio Javier Arias Alvarenga |
| Born: | 07/09/1972 |
| Place of birth: |
Paraguay |
| Nationality: |
Paraguay |