| Playoffs Eredivisie 2012/2013 Relegation - Appearances as Assistant | ||||
| 11/05/2013 | Go Ahead Eagles | - | FC Dordrecht | 3:0 |
| 19/05/2013 | Roda JC Kerkrade | - | De Graafschap | 6:1 |
| 26/05/2013 | FC Volendam | - | Go Ahead Eagles | 1:0 |
| Playoffs Eredivisie 2012/2013 Relegation - Appearances as Assistant | ||||
| 11/05/2013 | Go Ahead Eagles | - | FC Dordrecht | 3:0 |
| 19/05/2013 | Roda JC Kerkrade | - | De Graafschap | 6:1 |
| 26/05/2013 | FC Volendam | - | Go Ahead Eagles | 1:0 |
| Complete name: | Nicky Siebert |
| Born: | 29/12/1969 |
| Place of birth: |
Netherlands |
| Nationality: |
Netherlands |