Stadium: Court 3 Round: 54 Ground: Hardcourt indoor
| ITF Poland F11 | 2017/08/29 13:05 | Bastian Wagner v Jakub Grzegorczyk | 6-1,6-3 |
| ITF Poland F8 Qual | 2017/07/30 11:00 | Jeremy Gschwendtner v Jakub Grzegorczyk | 7-6,6-3 |
| Challenger Poznan Qual | 2017/07/15 14:25 | Jakub Grzegorczyk v Jonathan Mridha | 3-6,2-6 |
| ITF Poland F4 Qual | 2017/07/01 11:00 | Martin Valdo Randpere v Jakub Grzegorczyk | 3-6,6-3,6-1 |
| ITF Czech Republic F7 Qual | 2017/10/23 09:00 | Tomas Jirousek v Patrik Obal | 6-3,6-4 |