Round: 25 Ground: Clay
| ITF Poland F4 Qual | 2017/07/03 08:00 | Siimar, Mattias v Piotr Grynkowski | 6-2,6-2 |
| ITF Poland F4 Qual | 2017/07/02 13:00 | Siimar, Mattias v Siimar, Kristofer | 6-3,7-5 |
| ITF Poland F4 Qual | 2017/07/01 13:00 | Siimar, Mattias v Alessandro Ingarao | 6-1,6-3 |
| ITF Poland F3 | 2017/06/28 09:00 | Siimar, Mattias v Eriksson, Markus | 2-6,1-6 |
| ITF Poland F3 | 2017/06/27 14:10 | Siimar, Mattias v Kris Krawcewicz | 6-3,6-2 |
| ITF Poland F3 Qual | 2017/06/26 09:00 | Karl Friberg v Siimar, Mattias | 4-6,6-2,0-6 |
| ITF Poland F3 Qual | 2017/06/25 08:00 | Orkin, Elliott v Siimar, Mattias | 5-7,1-6 |
| ITF Italy F16 Qual | 2017/06/04 13:05 | Wilson Leite v Siimar, Mattias | 6-4,6-0 |
| ITF Poland F4 Qual | 2017/07/03 08:00 | Oleg Prihodko v Kristjan Tamm | 6-2,7-5 |
| ITF Poland F4 Qual | 2017/07/02 08:00 | Oleg Prihodko v Lombe, Harrison | 6-3,3-6,6-2 |
| ITF Poland F3 | 2017/06/27 12:25 | Marek, Wojciech v Oleg Prihodko | 6-3,6-2 |
| ITF Poland F3 Qual | 2017/06/26 10:00 | Oleg Prihodko v Drzewiecki, Karol | 6-3,4-6,6-1 |
| ITF Poland F3 Qual | 2017/06/25 08:00 | Oleg Prihodko v Neubau, Marco | 6-3,6-2 |
| ITF Ukraine F3 | 2017/05/24 08:55 | Mylokostov, Denys v Oleg Prihodko | 6-4,6-3 |
| ITF Ukraine F3 | 2017/05/22 07:30 | Oleg Prihodko v Shcherba, Vitalii | 6-3,3-6,6-3 |
| ITF Ukraine F2 | 2017/05/17 09:35 | Wilson Leite v Oleg Prihodko | 7-5,6-1 |