| Davis Cup | 11/24 18:40 | 29 | Bolelli/Vavassori v Koolhof/Van De Zandschulp | CANC | |
| Davis Cup | 11/22 21:35 | 28 | Krawietz/Puetz v Koolhof/Van De Zandschulp | CANC | |
| Davis Cup | 11/19 20:15 | 27 | Koolhof/Van De Zandschulp v Alcaraz/Granollers | 7-6,7-6 | |
| Davis Cup | 09/15 18:20 | 3 | Bolelli/Vavassori v Koolhof/Van De Zandschulp | 6-7,5-7 | |
| Davis Cup | 09/12 16:50 | 1 | Koolhof/Van De Zandschulp v Matos/Melo | 6-4,7-6 | |
| Davis Cup | 09/10 18:15 | 3 | Koolhof/Van De Zandschulp v Gille/Vliegen | 6-4,6-7,4-6 |