Round: 44 Ground: Hardcourt outdoor
| ITF Belgium F11 | 2017/08/31 12:05 | Louis Wessels v Mateusz Terczynski | 6-2,6-4 |
| ITF Belgium F11 | 2017/08/29 10:00 | Aitor Aramburu v Mateusz Terczynski | 3-6,5-7 |
| ITF Belgium F10 | 2017/08/22 14:40 | Yannik Reuter v Mateusz Terczynski | 6-3,6-2 |
| ITF Belgium F9 | 2017/08/15 12:00 | Mateusz Terczynski v Antoine Hoang | 3-6,3-6 |
| ITF Belgium F8 | 2017/08/09 08:00 | Christopher Heyman v Mateusz Terczynski | 6-1,6-1 |
| ITF Belgium F7 | 2017/08/03 12:25 | Jonas Merckx v Mateusz Terczynski | 6-2,6-2 |
| ITF Belgium F7 | 2017/08/01 13:15 | Mateusz Terczynski v Colin Sinclair | 6-4,3-6,7-5 |
| ITF Georgia F3 | 2017/07/18 06:00 | Boris Arias v Mateusz Terczynski | 7-6,3-6,7-6 |
| ITF Germany F9 | 2017/07/31 09:00 | Raphael Loukas v Christophe Tholl | 3-6,4-6 |
| ITF Germany F9 | 2017/07/30 13:30 | Benedict Moerl v Raphael Loukas | 3-6,7-5,2-6 |
| Challenger Koblenz Qual | 2017/01/15 08:00 | Nils Langer v Raphael Loukas | 6-1,6-1 |