| Playoffs Eredivisie 1999/2000 Nacompetitie - Appearances as Referee |  |
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| 31/05/2000 | Heracles Almelo | - | FC Groningen | 2:4 | 2 | - | 1 |
| Playoffs Eredivisie 1999/2000 Nacompetitie - Appearances as Referee | |
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| 31/05/2000 | Heracles Almelo | - | FC Groningen | 2:4 | 2 | - | 1 |
| Complete name: | Hennie de Graaf |
| Born: | 14/03/1959 |
| Place of birth: |
Netherlands |
| Nationality: |
Netherlands |