| Uitslagen van externe ronde 4 | 04-08-2013 |
| 1 | Wouter van | Rijn | W | ½-½ | 2043 |
| 2 | Eelco de | Vries | Z | ½-½ | 2167 |
| 3 | Otto | Wilgenhof | W | 1-0 | 2201 |
| 4 | Dirk | Hoogland | Z | ½-½ | 2069 |
| 5 | Remco de | Leeuw | W | 1-0 | 2015 |
| 6 | Léon van | Tol | Z | ½-½ | 2106 |
| 7 | Peter | Boel | W | 1-0 | 1766 |
| 8 | Richard van der | Wel | Z | ½-½ | 1980 |
| 1 | Sander | Berkhout | W | 1-0 | 2175 |
| 2 | Frank | Schleipfenbauer | Z | 0-1 | 2138 |
| 3 | John | Sloots | W | ½-½ | 2102 |
| 4 | Sjoerd van | Roosmalen | Z | ½-½ | 2068 |
| 5 | Pascal | Losekoot | W | 1-0 | 2098 |
| 6 | Martijn | Boele | Z | 0-1 | 2021 |
| 7 | Koen | Maassen van den Brink | W | 1-0 | 2056 |
| 8 | Koert van | Bemmel | Z | ½-½ | 1792 |
| 1 | Wouter | Abrahamse | W | ½-½ | 2114 |
| 2 | Jochem | Woestenburg | Z | 0-1 | 2054 |
| 3 | Theo | Jurrius | W | ½-½ | 2278 |
| 4 | Remco | Gerlich | Z | ½-½ | 2001 |
| 5 | Tony | Hogerhorst | W | 0-1 | 2177 |
| 6 | Fred | Reulink | Z | 0-1 | 2102 |
| 7 | Daan | Holtackers | W | ½-½ | 2009 |
| 8 | Cees | Sep | Z | 0-1 | 1974 |
| 1 | Anne Paul | Taal | W | 0-1 | 2038 |
| 2 | Désiré | Fassaert | Z | 1-0 | 1665 |
| 3 | Jan | Knuiman | W | 0-1 | 2031 |
| 4 | Ivo van der | Gouw | Z | 1-0 | 1883 |
| 5 | Paul | Tulfer | W | 0-1 | 1861 |
| 6 | Gerben | Hendriks | Z | 1-0 | 1669 |
| 7 | Ruud | Wille | W | 1-0 | 1797 |
| 8 | Murat | Duman | Z | 1-0 | 1783 |