| KNVB beker 2019/2020 - Appearances as Assistant | ||||
| 29/10/2019 | Vitesse | - | De Graafschap | 2:0 |
| 18/12/2019 | AZ Alkmaar | - | RKSV Groene Ster | 3:0 |
| 12/02/2020 | AZ Alkmaar | - | NAC Breda | 1:3 |
| KNVB beker 2019/2020 - Appearances as Assistant | ||||
| 29/10/2019 | Vitesse | - | De Graafschap | 2:0 |
| 18/12/2019 | AZ Alkmaar | - | RKSV Groene Ster | 3:0 |
| 12/02/2020 | AZ Alkmaar | - | NAC Breda | 1:3 |
| Complete name: | Nicky Siebert |
| Born: | 29/12/1969 |
| Place of birth: |
Netherlands |
| Nationality: |
Netherlands |