Stadium: Court 2 Round: 26
| ITF Poland F3 | 2018/05/15 09:10 | Timur Kiyamov v David Poljak | 5-7,6-2,1-6 |
| ITF Poland F2 | 2018/05/07 11:00 | David Poljak v Luca Gelhardt | 4-6,2-6 |
| Challenger Ostrava Qual | 2018/04/28 10:05 | David Poljak v Patricio Heras | 3-6,3-6 |
| ITF Egypt F14 | 2018/04/22 08:00 | Alessandro Bega v David Poljak | 6-4,6-3 |
| ITF Egypt F14 | 2018/04/21 08:00 | David Poljak v Evan Hoyt | 6-4,6-4 |
| ITF Egypt F14 | 2018/04/20 08:00 | David Poljak v Dusty H. Boyer | 6-3,6-4 |
| ITF Egypt F14 | 2018/04/19 09:50 | David Poljak v Frederik Press | 6-2,6-4 |
| ITF Egypt F14 | 2018/04/18 09:45 | David Poljak v Daniel Echeverry | 6-0,6-2 |
| ITF Turkey F19 | 2018/05/15 08:25 | Koray Kirci v Valentin Guenther | 7-5,6-3 |
| ITF Turkey F18 | 2018/05/09 07:30 | Koray Kirci v Aslan Karatsev | 1-6,2-6 |
| ITF Turkey F18 | 2018/05/07 07:30 | Koray Kirci v Nick Cmager | 6-2,7-5 |
| ITF Turkey F18 | 2018/05/06 07:30 | Koray Kirci v Alexandru Cristian Bodnariuk | 6-3,6-2 |
| ITF Turkey F17 | 2018/05/02 07:30 | Jules Okala v Koray Kirci | 6-2,7-5 |
| ITF Turkey F16 | 2018/04/21 09:30 | Alberto Cammarata v Koray Kirci | 7-5,6-4 |
| ITF Turkey F12 | 2018/03/27 09:05 | Thomas Statzberger v Koray Kirci | 6-1,6-0 |
| ITF Turkey F11 | 2018/03/22 07:30 | Koray Kirci v Juan Pablo Paz | 6-3,5-7,5-7 |