Stadium: Wisla Centrum 2 Round: 25 Ground: Clay
| Challenger Glasgow | 2018/05/01 10:45 | Harri Heliovaara v Jonathan Gray | 6-3,6-1 |
| ITF France F8 | 2018/04/25 09:00 | Jonathan Gray v Gregoire Jacq | 0-6,2-6 |
| ITF France F8 | 2018/04/23 16:30 | Robin Kern v Jonathan Gray | 3-6,2-6 |
| ITF Greece F5 | 2018/03/30 07:30 | Jonathan Gray v Yaraslav Shyla | 4-6,2-6 |
| ITF Greece F5 | 2018/03/29 10:35 | Jonathan Gray v Patrik Rikl | 6-4,6-0 |
| ITF Greece F5 | 2018/03/27 13:25 | Jonathan Gray v Anastasios Pavlis | 7-6,6-1 |
| ITF Greece F4 | 2018/03/23 14:55 | Jonathan Gray v Tomas Barrios Vera | 6-3,1-6,1-6 |
| ITF Greece F4 | 2018/03/23 10:45 | Jonathan Gray v Erik Crepaldi | 6-3,5-7,6-2 |
| ITF Poland F1 | 2018/05/01 09:45 | Maciej Smola v Luca Gelhardt | 6-4,4-6,0-6 |
| ITF Italy F9 | 2018/04/23 13:40 | Maciej Smola v Juan Pablo Paz | 2-6,0-6 |
| ITF Italy F9 | 2018/04/22 12:00 | Maciej Smola v Federico Bertuccioli | 6-7,7-5,6-2 |
| ITF Italy F8 | 2018/04/19 12:00 | Filip Horansky v Maciej Smola | 6-3,7-5 |
| ITF Italy F8 | 2018/04/18 13:05 | Alexander Lazov v Maciej Smola | 6-3,4-6,6-7 |
| ITF Italy F8 | 2018/04/17 12:00 | Maciej Smola v Dmitry Popko | 6-7,6-2,6-3 |
| ITF Italy F8 Qual | 2018/04/15 08:00 | Maciej Smola v Andrea Borroni | 7-6,6-1 |
| ITF Italy F8 Qual | 2018/04/14 15:00 | Maciej Smola v Edoardo Lavagno | 5-7,7-6,7-6 |