Round: 62 Ground: Clay
| ITF Belgium F3 Qual | 2017/07/02 08:00 | Constant De La Bassetiere v Colin Sinclair | 4-6,2-6 |
| ITF Belgium F3 Qual | 2017/07/01 16:00 | Constant De La Bassetiere v Dane Esses | 6-1,6-1 |
| ITF Belgium F2 | 2017/06/29 08:00 | Constant De La Bassetiere v Miomir Kecmanovic | 2-6,2-6 |
| ITF Belgium F2 | 2017/06/28 14:00 | Constant De La Bassetiere v Benjamin Dhoe | 6-3,2-6,7-6 |
| ITF Belgium F2 Qual | 2017/06/26 08:00 | Constant De La Bassetiere v Louis Van Herck | 6-0,6-2 |
| ITF Belgium F2 Qual | 2017/06/25 09:35 | Constant De La Bassetiere v Simon Beaupain | 6-3,4-6,6-1 |
| ITF Belgium F1 | 2017/06/22 09:00 | Constant De La Bassetiere v Samuel Bensoussan | 2-6,5-7 |
| ITF Belgium F1 | 2017/06/20 16:00 | Johannes Ingildsen v Constant De La Bassetiere | 6-1,4-6,3-6 |
| ITF Belgium F3 Qual | 2017/07/01 10:00 | Guillaume Dermiens v Christian Sigsgaard | 1-6,0-6 |
| ITF Belgium F1 Qual | 2017/06/18 16:20 | Guillaume Dermiens v Rayane Oumaouche | 1-6,1-6 |
| ITF Belgium F1 Qual | 2017/06/17 12:20 | Guillaume Dermiens v Valentin De Carvalho | 6-0,6-0 |
| ITF Portugal F3 Qual | 2017/03/11 09:30 | Guido Marson v Guillaume Dermiens | 6-2,6-3 |
| ITF Portugal F2 | 2017/03/05 16:30 | Samuel Hodor v Guillaume Dermiens | 6-2,6-4 |
| ITF Portugal F1 | 2017/02/25 09:30 | Guillaume Dermiens v Jose Von Hafe Perez | 6-7,2-6 |
| ITF Belgium F4 Qual | 2016/07/02 07:00 | Mark-Flavius Andres v Guillaume Dermiens | 7-5,7-6 |
| ITF Belgium F2 Qual | 2016/06/19 12:50 | Maxence Beauge v Guillaume Dermiens | 6-0,7-6 |