Stadium: Court 3 Round: 54 Ground: Hardcourt indoor
| ITF Czech Republic F3 Qual | 2016/05/23 10:20 | Piotr Grynkowski v Lukas Vejvara | 4-6,3-6 |
| ITF Germany F15 | 2017/10/16 10:00 | Dimitriy Voronin v Lukas Vejvara | 7-5,6-2 |
| ITF Slovakia F3 | 2017/08/09 12:00 | Olexiy Kolisnyk v Lukas Vejvara | 3-6,6-3,6-2 |
| ITF Slovakia F3 | 2017/08/08 08:00 | Lukas Vejvara v Kris Krawcewicz | 6-4,6-1 |
| ITF Slovakia F3 | 2017/08/07 08:00 | Lukas Vejvara v Nikolas Lahky | 6-3,6-2 |
| Challenger - Prag - Kvalifikation | 2017/07/22 09:20 | Lenny Hampel v Lukas Vejvara | 6-0,6-1 |
| ITF Austria F3 | 2017/07/15 07:00 | Lukas Vejvara v Gilbert S K Junior | 6-2,0-6,5-7 |
| ITF Czech Republic F5 | 2017/07/10 14:45 | Petr Nouza v Lukas Vejvara | 6-0,6-4 |
| ITF Czech Republic F5 Qual | 2017/07/09 09:00 | Lukas Vejvara v Ivan Yatsuk | 7-5,6-4 |
| ITF Czech Republic F7 Qual | 2017/10/23 08:00 | Pavel Motl v Piotr Grynkowski | 5-7,2-6 |
| Challenger Szczecin Qual | 2017/09/09 14:10 | Piotr Grynkowski v Guillermo Duran | 4-6,2-6 |
| ITF Poland F11 | 2017/08/28 09:00 | Piotr Grynkowski v Adam Chadaj | 4-6,1-6 |
| ITF Poland F9 | 2017/08/16 10:20 | Piotr Grynkowski v Boy Westerhof | 1-6,4-6 |
| ITF Poland F9 | 2017/08/15 10:30 | Piotr Grynkowski v Maciej Nowak | 5-7,6-1,6-3 |
| ITF Poland F9 Qual | 2017/08/14 11:50 | Piotr Grynkowski v Maximilian Kaiser | 6-4,6-1 |
| ITF Poland F9 Qual | 2017/08/13 10:30 | Piotr Grynkowski v Mikolaj Borkowski | 6-2,7-6 |
| Challenger Poznan Qual | 2017/07/15 09:00 | Piotr Grynkowski v Norbert Tadyszak | 6-3,6-3 |