Stadium: Ustron 1 Round: 25 Ground: Hardcourt outdoor
| ITF Poland F2 | 2018/05/11 09:30 | Gray, Jonathan v Ratniuk, Maxim | 0-6,1-6 |
| ITF Poland F2 | 2018/05/10 12:30 | Gray, Jonathan v Kossek, Daniel | 6-3,6-1 |
| ITF Poland F2 | 2018/05/08 08:00 | Gray, Jonathan v Smola, Maciej | 6-1,6-4 |
| Challenger - Glasgow | 2018/05/01 10:45 | Heliovaara, Harri v Gray, Jonathan | 6-3,6-1 |
| ITF France F8 | 2018/04/25 09:00 | Gray, Jonathan v Jacq, Gregoire | 0-6,2-6 |
| ITF France F8 | 2018/04/23 16:30 | Kern, Robin v Gray, Jonathan | 3-6,2-6 |
| ITF Greece F5 | 2018/03/30 07:30 | Gray, Jonathan v Shyla, Yaraslau | 4-6,2-6 |
| ITF Greece F5 | 2018/03/29 10:35 | Gray, Jonathan v Patrik Rikl | 6-4,6-0 |
| ITF Poland F2 | 2018/05/11 10:40 | Podzus, Martins v Pawel Juszczak | 6-1,6-2 |
| ITF Poland F2 | 2018/05/10 14:55 | Jannik Sinner v Pawel Juszczak | 6-4,2-6,4-6 |
| ITF Poland F2 | 2018/05/08 08:00 | Dowson, Dan v Pawel Juszczak | 6-7,1-6 |
| ITF Poland F1 | 2018/05/01 08:50 | Michael Vrbensky v Pawel Juszczak | 6-2,2-6,7-6 |
| ITF Egypt F13 | 2018/04/11 12:00 | Vigani, Joy v Pawel Juszczak | 6-1,6-4 |
| Egypt F12, Singles Qualifying | 2018/04/03 08:00 | Pawel Juszczak v Vladyslav Orlov | 5-7,4-6 |
| ITF Egypt F11 | 2018/03/28 08:00 | Pawel Juszczak v Forti, Francesco | 5-7,6-7 |
| ITF South Africa F3 | 2017/12/08 10:10 | Thomas Fancutt v Pawel Juszczak | 6-2,5-7,6-3 |