Round: 26 Ground: Clay
| ATP Memphis Qual | 2016/02/13 03:35 | Koolhof/Middelkoop v Johnson/Querrey | 3-6,4-6 |
| ATP Sofia MD | 2016/02/06 14:00 | Koolhof/Middelkoop v De Bakker/Haase | 2-6,7-6,11-9 |
| ATP Sofia MD | 2016/02/02 18:00 | Kuzmanov/Lazov v Koolhof/Middelkoop | 7-6,3-6,10-12 |
| Challenger Brest MD | 2015/10/25 13:45 | Koolhof/Middelkoop v Skupski/Skupski | 3-6,6-4,10-6 |
| Challenger Brest MD | 2015/10/22 13:00 | Koolhof/Middelkoop v Boltz/Jacq | 6-0,6-3 |
| Challenger Seville MD | 2015/09/10 16:35 | Koolhof/Middelkoop v Cachin/Munar | 7-6,6-3 |
| Challenger Meerbusch MD | 2015/08/23 11:00 | Koolhof/Middelkoop v Brown/Junaid | 4-6,5-7 |
| Challenger Meerbusch MD | 2015/08/20 12:00 | Kretschmer/Satschko v Koolhof/Middelkoop | 4-6,6-3,2-10 |