| Round 4 |
| do 05-04-2018 |  Huizum | - |  Damcombinatie Fryslân | | 2 | - | 6 | | | |
| Rein van der Pal (1422) | - | Bastiaan Hollander (1315) | | 1 | - | 1 | 4 | |
| Anne Piet Kooistra (1235) | - | Gerlof Kolk (1385) | | 0 | - | 2 | 1 | |
| Piet Bouma (1188) | - | Douwe Edelenbos (1228) | | 0 | - | 2 | 2 | | Game |
| Jan Adema (1240) | - | Hans Zondervan (1187) | | 1 | - | 1 | 3 | | Game |
| ma 09-04-2018 |  OG Drachten | - | Damcombinatie Fryslân 2 | | 4 | - | 4 | | | |
| Wopke de Vries (1167) | - | Oege Dijkstra (1258) | | 0 | - | 2 | 3 | |
| Gabriël Heerema (1391) | - | Piet Tuik (1192) | | 1 | - | 1 | 2 | | Game |
| Jan Hoogterp (1236) | - | Nick de la Fonteyne (1110) | | 1 | - | 1 | 1 | | Game |
| Rudolf Smedinga (1187) | - | Piet Leijenaar (1091) | | 2 | - | 0 | 4 | | Game |
