Stadium: Court 3 Round: 44 Ground: Hardcourt indoor
| ITF Poland F8 | 2018/08/21 13:00 | Piotr Grynkowski v Jelle Sels | 3-6,2-6 |
| ITF Poland F8 | 2018/08/20 09:30 | Robert Strombachs v Piotr Grynkowski | 1-6,1-6 |
| ITF Poland F7 | 2018/08/14 14:50 | Piotr Grynkowski v Vladyslav Orlov | 5-7,0-6 |
| ITF Poland F7 | 2018/08/13 10:20 | Piotr Grynkowski v Borkowski, Mikolaj | 6-3,6-3 |
| ITF Poland F7 | 2018/08/12 11:00 | Piotr Grynkowski v Di Maro, Marco | 7-5,6-3 |
| ITF Poland F6 | 2018/08/07 08:00 | Walkow, Szymon v Piotr Grynkowski | 6-3,6-2 |
| ITF Ireland F1 Qual | 2018/07/30 09:30 | Piotr Grynkowski v Binding, Jonathan | 4-6,2-6 |
| ITF Czech Republic F5 Qual | 2018/07/02 10:00 | Piotr Grynkowski v Stepanek, Antonin | 2-6,0-6 |
| ITF Belgium F10 Qual | 2018/08/26 08:00 | Julien De Cuyper v Sollie, Thorsten | 6-2,7-5 |
| ITF Netherlands F5 | 2018/08/18 08:00 | Sollie, Thorsten v Eisinga, Zachary | 4-6,6-4,4-6 |
| ITF Netherlands F3 | 2018/07/07 10:00 | Anselmo, Baptiste v Sollie, Thorsten | 6-1,7-5 |
| ITF Netherlands F2 Qual | 2018/07/01 08:00 | Guenther, Valentin v Sollie, Thorsten | 7-6,6-7,6-4 |
| ITF Netherlands F2 Qual | 2018/06/30 09:30 | Sollie, Thorsten v Zaidman, Nicolas | 6-3,7-5 |
| ITF Germany F2 Qual | 2018/01/21 13:00 | Kenneth Raisma v Sollie, Thorsten | 6-2,4-6,6-3 |
| ITF Germany F2 Qual | 2018/01/21 08:30 | Sollie, Thorsten v Mayer, Patrick | 3-6,6-4,6-2 |
| ITF Netherlands F5 | 2017/08/13 11:00 | Rizzuti, Giovanni v Sollie, Thorsten | 6-2,6-3 |