stadio: Wisla Centrum 2 Round: 25 Ground: Clay
| ITF Polonia F1 | 2018/05/01 12:15 | Daniel Kossek v Piotr Grynkowski | 1-6,1-6 |
| ITF Turchia F14 | 2018/04/07 09:30 | Daniel Kossek v Felipe Meligeni Rodrigues Alves | 0-6,0-6 |
| ITF Tunisia F9 | 2018/03/06 11:05 | Francois-Arthur Vibert v Daniel Kossek | 6-0,6-1 |
| ITF Tunisia F8 | 2018/02/25 11:00 | Alen Rogic-Hadzalic v Daniel Kossek | 6-1,7-6 |
| ITF Tunisia F8 | 2018/02/24 11:30 | Michael Kerschbaumer v Daniel Kossek | 4-6,5-7 |
| ITF Tunisia F7 | 2018/02/17 10:30 | Daniel Kossek v Adam Jones | 3-6,2-6 |
| ITF Sudafrica F3 - Qual. | 2017/12/04 09:20 | Milen Ianakiev v Daniel Kossek | 6-3,6-2 |
| ITF Sudafrica F3 - Qual. | 2017/12/03 13:30 | Vasilios Caripi v Daniel Kossek | 4-6,6-4,5-7 |
| ITF Polonia F1 | 2018/05/01 15:10 | Karol Paluch v Lukasz Kozielski | 6-2,6-3 |
| ITF Croazia F3 | 2018/03/18 08:30 | Lukasz Kozielski v Dominik Kisantal | 2-6,7-5,2-6 |
| ITF Germania F2 - Qual. | 2018/01/21 08:30 | Lukasz Kozielski v Maciej Jablonski | 4-6,4-6 |
| ITF Egitto F38 | 2017/12/13 12:30 | Lukasz Kozielski v Dominik Barton | 0-6,0-6 |
| ITF Egitto F38 | 2017/12/11 08:30 | Lukasz Kozielski v Dominik Barton | 5-7,5-7 |
| ITF Egitto F38 | 2017/12/10 08:00 | Lukasz Kozielski v Ashraf El Sayed | 7-6,6-1 |
| ITF Egitto F37 | 2017/12/04 10:30 | Lukasz Kozielski v Nicolas Carlone | 6-4,3-6,4-6 |
| ITF Egitto F37 | 2017/12/03 09:00 | Lukasz Kozielski v Joseph W. Van Meter | 6-7,7-5,6-3 |