Round: 62 Ground: Clay
| ITF Belgium F6 Qual | 2016/07/16 10:00 | Louis Chaix v Guy Den Heijer | 6-4,6-2 |
| ITF Netherlands F4 | 2016/07/05 16:15 | Guy Den Heijer v Antal Van Der Duim | 1-6,3-6 |
| ITF Belgium F3 | 2016/06/29 09:40 | Lennert Van Der Linden v Guy Den Heijer | 6-3,6-3 |
| ITF Belgium F3 | 2016/06/28 09:00 | Maxime Tchoutakian v Guy Den Heijer | 2-6,2-6 |
| ITF Belgium F3 Qual | 2016/06/27 10:50 | Benjamin Dhoe v Guy Den Heijer | 4-6,6-4,6-3 |
| ITF Belgium F3 Qual | 2016/06/26 07:00 | Jakub Wojcik v Guy Den Heijer | 4-6,4-6 |
| ITF Portugal F3 | 2016/03/09 14:30 | Guy Den Heijer v Oscar Otte | 3-6,3-6 |
| ITF Portugal F3 Qual | 2016/03/07 19:15 | Alejandro Artunedo v Guy Den Heijer | 3-6,2-6 |