| Champions League 1956/1957 - Appearances as Referee |  |
 |
 |
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| 14/11/1956 | OGC Nice | - | Rangers FC | 2:1 | - | - | 2 |
| 17/02/1957 | Crvena Zvezda | - | CDNA Sofia | 3:1 | - | - | 1 |
| Champions League 1956/1957 - Appearances as Referee | |
|
|
||||
| 14/11/1956 | OGC Nice | - | Rangers FC | 2:1 | - | - | 2 |
| 17/02/1957 | Crvena Zvezda | - | CDNA Sofia | 3:1 | - | - | 1 |
| Complete name: | Riccardo Pieri |
| Born: | 07/11/1920 † 00/00/1965 |
| Place of birth: |
Trieste, 
Italy |
| Residence: | Trieste |
| Nationality: |
Italy |