Stadium: Court 1 Round: 25 Ground: Carpet indoor
| ITF Poland F6 | 2018/08/07 08:00 | Szymon Walkow v Piotr Grynkowski | 6-3,6-2 |
| ITF Ireland F1 Qual | 2018/07/30 09:30 | Piotr Grynkowski v Jonathan Binding | 4-6,2-6 |
| ITF Czech Republic F5 Qual | 2018/07/02 10:00 | Piotr Grynkowski v Antonin Stepanek | 2-6,0-6 |
| ITF Czech Republic F5 Qual | 2018/07/01 08:00 | Piotr Grynkowski v Michal Skonieczny | 6-2,6-3 |
| ITF Poland F4 | 2018/05/22 08:55 | Pawel Juszczak v Piotr Grynkowski | 6-2,6-3 |
| ITF Poland F4 | 2018/05/21 07:00 | Piotr Grynkowski v Ramy Labna | 6-3,7-6 |
| ITF Poland F2 | 2018/05/06 08:00 | Janis Podzus v Piotr Grynkowski | 7-5,7-5 |
| ITF Poland F2 | 2018/05/05 12:30 | Noe Sytkow v Piotr Grynkowski | 2-6,7-6,1-6 |
| ITF Czech Republic F6 | 2018/07/14 09:00 | Jan Mertl v Tomas Jirousek | 6-3,6-4 |
| ITF Czech Republic F6 | 2018/07/13 09:00 | Jan Mertl v Patrik Rikl | 6-2,4-6,7-6 |
| ITF Czech Republic F6 | 2018/07/12 09:00 | Marek Jaloviec v Jan Mertl | 5-7,2-6 |
| ITF Czech Republic F6 | 2018/07/11 12:00 | Marek Semjan v Jan Mertl | 6-3,5-7,4-6 |
| ITF Czech Republic F6 | 2018/07/09 10:30 | Alex Molcan v Jan Mertl | 2-6,4-6 |
| ITF Czech Republic F5 | 2018/07/05 08:30 | Patrik Rikl v Jan Mertl | 7-6,6-4 |
| ITF Czech Republic F5 | 2018/07/04 09:35 | Jan Mertl v Pavel Kotov | 7-6,6-3 |
| ITF Czech Republic F5 | 2018/07/03 09:30 | Antonin Stepanek v Jan Mertl | 6-3,1-6,2-6 |