| U20 Campeonato Sudamericano 2007 Paraguay - Appearances as Referee |  |
 |
 |
||||
| 09/01/2007 | Paraguay | - | Chile | 1:0 | 4 | - | - |
| 16/01/2007 | Brazil | - | Paraguay | 1:1 | 5 | - | - |
| 20/01/2007 | Brazil | - | Argentina | 2:2 | 6 | - | - |
| 26/01/2007 | Brazil | - | Paraguay | 1:0 | 5 | - | 2 |
| U20 Campeonato Sudamericano 2007 Paraguay - Appearances as Referee | |
|
|
||||
| 09/01/2007 | Paraguay | - | Chile | 1:0 | 4 | - | - |
| 16/01/2007 | Brazil | - | Paraguay | 1:1 | 5 | - | - |
| 20/01/2007 | Brazil | - | Argentina | 2:2 | 6 | - | - |
| 26/01/2007 | Brazil | - | Paraguay | 1:0 | 5 | - | 2 |
| Complete name: | Roberto Carlos Silvera Calcerrada |
| Born: | 30/01/1971 |
| Place of birth: |
Uruguay |
| Nationality: |
Uruguay |