Stadium: Clay 3 Round: 25 Ground: Hardcourt outdoor
| ITF Turkey F29 | 2018/09/27 07:30 | Vanneste, Jeroen v Prechtel, Sebastian | 6-3,4-6,0-6 |
| ITF Turkey F29 | 2018/09/25 07:30 | Vanneste, Jeroen v Crepaldi, Erik | 7-5,6-0 |
| Challenger Szczecin | 2018/09/09 10:35 | Duran, Guillermo v Vanneste, Jeroen | 6-1,6-2 |
| Challenger Szczecin | 2018/09/08 10:20 | Bednarek, Tomasz v Vanneste, Jeroen | 0-6,2-6 |
| Challenger Seville | 2018/09/02 09:40 | Vanneste, Jeroen v Djokovic, Marko | 4-6,1-6 |
| Challenger Seville | 2018/09/01 10:10 | Vanneste, Jeroen v Manrique-Velazquez, Diego-Jose | 6-2,6-2 |
| ITF Poland F8 | 2018/08/23 09:00 | Vanneste, Jeroen v Smirnov, Artem | 1-6,3-6 |
| ITF Poland F8 | 2018/08/21 11:05 | Vanneste, Jeroen v Nikita Mashtakov | 7-6,4-6,6-3 |
| ITF Turkey F30 | 2018/10/01 07:30 | Guttau, Niklas v Vicentiu Andrei Niculescu | 6-3,6-0 |
| ITF Turkey F30 | 2018/09/30 07:30 | Besednikov, Oleg v Guttau, Niklas | 5-7,0-6 |
| ITF Turkey F30 | 2018/09/29 07:00 | Guttau, Niklas v Neil Oberleitner | 6-3,6-4 |
| ITF Netherlands F5 | 2018/08/19 10:00 | Guttau, Niklas v Bruna, Esteban | 3-6,4-6 |
| ITF Netherlands F4 | 2018/08/11 09:00 | Meuffels, Alban v Guttau, Niklas | 6-3,6-4 |
| ITF Poland F6 | 2018/08/07 11:25 | Andrzejczuk, Adrian v Guttau, Niklas | 6-2,6-1 |
| ITF Poland F6 Qual | 2018/08/06 08:00 | Guttau, Niklas v Mlazga, Krzysztof | 6-2,6-4 |
| ITF Poland F6 Qual | 2018/08/05 09:30 | Guttau, Niklas v Iftimie, Michele Lorenzo | 5-7,6-2,6-3 |