| Champions League 1992/1993 - Appearances as Referee |  |
 |
 |
||||
| 21/10/1992 | FC Sion | - | FC Porto | 2:2 | - | - | - |
| Champions League 1992/1993 - Appearances as Referee | |
|
|
||||
| 21/10/1992 | FC Sion | - | FC Porto | 2:2 | - | - | - |
| Complete name: | John Blankenstein |
| Born: | 12/02/1949 † 25/08/2006 |
| Place of birth: |
Den Haag, 
Netherlands |
| Nationality: |
Netherlands |