Stadium: Court 3 Round: 54 Ground: Clay
| ITF Sweden F5 | 2018/09/29 08:00 | Wiklund, Olof v Arvidsson Ehn, Jakob | 3-6,5-7 |
| Czech Republic F11, Singles Qualifying | 2018/11/19 11:00 | Krstev, Ondrej v Dermiens, Guillaume | 6-2,6-2 |
| ITF Belgium F9 | 2018/08/21 09:00 | Dermiens, Guillaume v Dan Added | 3-6,1-6 |
| ITF Belgium F8 | 2018/08/14 09:00 | Dermiens, Guillaume v Alex Knaff | 1-6,4-6 |
| ITF Belgium F7 | 2018/08/07 09:10 | Maxime Chazal v Dermiens, Guillaume | 6-1,6-1 |
| ITF Belgium F6 Qual | 2018/07/28 07:00 | Julien De Cuyper v Dermiens, Guillaume | 6-3,0-6,6-2 |
| ITF Belgium F5 | 2018/07/21 11:00 | Peters, Flemming v Dermiens, Guillaume | 7-6,6-4 |
| ITF Belgium F5 | 2018/07/21 07:00 | Dermiens, Guillaume v Molina Bannen, Joaquin Pablo | 6-2,6-2 |
| ITF Belgium F4 | 2018/07/14 08:30 | Wojcik, Jakub v Dermiens, Guillaume | 6-1,6-2 |