Stadium: Ustron 2 Round: 26 Ground: Clay
| ITF Czech Republic F11 | 2017/11/21 13:15 | Danylo Kalenichenko v Marcin Gawron | 6-3,6-2 |
| Challenger Bratislava Qual | 2017/11/04 12:35 | Marcin Gawron v Jan Mertl | 4-6,6-7 |
| ITF Czech Republic F7 | 2017/10/25 15:45 | Marcin Gawron v Matej Vocel | 0-6,1-6 |
| Challenger Szczecin | 2017/09/12 19:05 | Richard Gasquet v Marcin Gawron | 6-3,6-0 |
| ITF Poland F11 | 2017/09/03 10:00 | Marcin Gawron v Pawel Juszczak | 4-6,3-6 |
| ITF Poland F11 | 2017/09/01 09:00 | Ivan Endara v Marcin Gawron | 6-4,6-7,4-6 |
| ITF Poland F11 | 2017/08/30 11:10 | Marcin Gawron v Szymon Walkow | 6-1,6-4 |
| ITF Poland F11 | 2017/08/28 09:00 | Marcin Gawron v Patryk Krolik | 6-3,6-0 |
| ITF Greece F4 | 2018/03/18 09:30 | Guy Den Heijer v Duje Ajdukovic | 3-6,6-3,4-6 |
| ITF Greece F4 | 2018/03/17 07:30 | Guy Den Heijer v Vasilios Caripi | 5-7,6-3,6-4 |
| ITF Greece F3 | 2018/03/15 08:00 | Neil Pauffley v Guy Den Heijer | 6-4,6-2 |
| ITF Greece F3 | 2018/03/13 10:20 | Jannik Sinner v Guy Den Heijer | 3-6,6-7 |
| ITF Greece F2 | 2018/03/03 07:30 | Guy Den Heijer v Duje Ajdukovic | 3-6,5-7 |
| ITF Spain F4 | 2018/02/10 14:30 | Daniel Gimeno-Traver v Guy Den Heijer | 6-2,7-5 |
| ITF Spain F4 | 2018/02/09 15:00 | Guy Den Heijer v Yshai Oliel | 6-1,6-3 |
| ITF Spain F4 | 2018/02/08 11:00 | Andrey Chepelev v Guy Den Heijer | 0-6,1-6 |