| ITF Belgium F2 | 2017/06/27 09:30 | Alex Knaff v Thomas Brees | 6-1,5-2 |
| ITF Belgium F2 | 2017/06/27 09:30 | Alex Knaff v Thomas Brees | 6-1,5-2 |
| ITF Belgium F2 Qual | 2017/06/26 11:25 | Alex Knaff v Christophe Nickels | 6-2,6-2 |
| ITF Belgium F2 Qual | 2017/06/25 14:00 | Alex Knaff v Thomas Pouleur | 6-3,5-0 |
| ITF Belgium F1 | 2017/06/20 17:00 | Alex Knaff v Mirko Martinez | 6-7,2-6 |
| Davis Cup | 2017/04/07 07:50 | Alex Knaff v Arber Sulstarova | 6-2,6-0 |
| ITF USA F40 Qual | 2016/12/04 17:30 | Dragos Constantin Ignat v Alex Knaff | 6-2,6-7,6-2 |
| ITF USA F37 | 2016/11/13 18:00 | Strahinja Rakic v Alex Knaff | 6-3,6-4 |
| ITF USA F37 | 2016/11/12 19:00 | Alexandre Rotsaert v Alex Knaff | 3-6,4-6 |
| ITF Belgium F2 | 2017/06/27 09:30 | Alex Knaff v Thomas Brees | 6-1,5-2 |
| ITF Belgium F1 Qual | 2017/06/17 09:25 | Antoine Damiens v Thomas Brees | 7-6,6-2 |
| ITF Portugal F3 Qual | 2017/03/11 09:30 | Thomas Brees v Goncalo Falcao | 1-6,2-6 |
| ITF Portugal F2 | 2017/03/04 13:00 | Thomas Brees v Francisco Cabral | 3-6,2-6 |
| ITF Portugal F1 | 2017/02/26 13:00 | Thomas Brees v Eduardo Dischinger | 1-6,1-6 |
| ITF Portugal F1 | 2017/02/25 09:30 | Diogo Marques v Thomas Brees | 2-6,6-7 |
| ITF Greece F11 | 2016/11/20 10:00 | Daniel Tamir v Thomas Brees | 7-6,4-6,6-0 |
| ITF Greece F10 Qual | 2016/11/12 07:00 | Alexander Donski v Thomas Brees | 6-0,6-1 |