| Uitslagen van interne ronde 19 | 25-01-2018 |
| Peter Boel | Bart de Kort | 1-0 |
| Gerben Hendriks | Freek Hooning | ½-½ |
| Ruud Wille | Wisse Witmans | 1-0 |
| Hub Kusters | Frans Veerman | 1-0 |
| Rob van Belle | Henk Schunck | 1-0 |
| Hans Derendorp | Jan Sanders | 1-0 |
| Ko Kooman | Thijs Stomphorst | 1-0 |
| Constant Nieuwenstein | Kazem Mollahosseini | 0-1 |
| Werner Gubbels | Hans Meijer | 0-1 |
| Bob Hartogh Heys | Bert Maas | ½-½ |
| Pim Rijmer | Bram Hamers | ½-½ |
| Phillip Stibbe | Victor Droop | ½-½ |
| Siert Huizinga | Jan Vermeer | 1-0 |
| Peter Hamers | Clemens Wijman | 0-1 |
| Erik Gort | Theo van Lotringen | 1-0 |