| Primera División 2007/2008 Clausura - Appearances as Referee |  |
 |
 |
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| 21/06/2008 | Newell's Old Boys | - | San Martín de San Juan | 1:0 | 4 | - | 1 |
| Primera División 2007/2008 Clausura - Appearances as Referee | |
|
|
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| 21/06/2008 | Newell's Old Boys | - | San Martín de San Juan | 1:0 | 4 | - | 1 |
| Complete name: | Guillermo Alejandro Rietti |
| Born: | 30/09/1966 |
| Place of birth: |
Buenos Aires, 
Argentina |
| Nationality: |
Argentina |