Ground: Clay
| ITF Netherlands F3 | 2015/07/01 10:00 | Fabricio Neis v Yannick Mertens | 6-2,4-6,7-6 |
| ITF Netherlands F3 | 2015/06/30 16:25 | Robert Willekes MacDonald v Yannick Mertens | 4-6,2-6 |
| Wimbledon Qual | 2015/06/24 14:45 | Yannick Mertens v Mathias Bourgue | 6-7,6-3,6-2 |
| Wimbledon Qual | 2015/06/23 10:00 | Austin Krajicek v Yannick Mertens | 4-6,6-2,5-7 |
| Challenger - Blois | 2015/06/15 16:10 | Yannick Mertens v Alejandro Gonzalez | 4-6,2-6 |
| Challenger Caltanissetta | 2015/06/09 09:00 | Yannick Mertens v Alejandro Gonzalez | 2-6,3-6 |
| Challenger - Ostrava | 2015/04/27 15:25 | Yannick Mertens v Pedro Cachin | 3-6,4-6 |
| Challenger - St Brieuc | 2015/04/09 11:30 | Yuichi Sugita v Yannick Mertens | 6-0,6-3 |
| ITF Netherlands F3 | 2015/07/01 10:00 | Miliaan Niesten v N. Vijay Sundar Prashanth | 6-3,4-6,3-6 |
| ITF Netherlands F3 | 2015/06/30 14:10 | Bart Van Den Berg v Miliaan Niesten | 6-7,4-6 |
| ITF Netherlands F2 | 2015/06/24 11:00 | Miliaan Niesten v Bobbie De Goeijen | 6-2,7-6 |
| ITF Israel F3 | 2015/03/25 13:10 | Tal Goldengoren v Miliaan Niesten | 7-5,6-3 |
| ITF Israel F3 | 2015/03/24 11:55 | Miliaan Niesten v Raleigh Smith | 7-6,5-7,6-1 |
| ITF Turkey F7 | 2015/02/18 09:30 | Gleb Sakharov v Miliaan Niesten | 6-2,6-4 |
| ITF Turkey F6 | 2015/02/16 08:30 | Miliaan Niesten v Dimitar Kuzmanov | 6-2,6-3 |
| ITF Turkey F6 | 2015/02/14 08:30 | Miliaan Niesten v Jonas Merckx | 6-4,6-3 |