Stadium: Court 15 Round: 25 Ground: Hardcourt outdoor
| ITF Tunisia F13 | 2018/04/05 12:00 | Johannes Haerteis v Clement Tabur | 7-6,5-7,5-7 |
| ITF Tunisia F13 | 2018/04/03 10:30 | Johannes Haerteis v Ezequiel A Santalla | 6-3,4-6,6-2 |
| ITF Greece F5 | 2018/03/29 07:30 | Johannes Haerteis v Baptiste Crepatte | 4-6,7-6,3-6 |
| ITF Greece F5 | 2018/03/27 12:00 | Calin Manda v Johannes Haerteis | 2-6,2-6 |
| ITF Italy F1 Qual | 2018/02/24 08:30 | Alexander Wolfschmidt v Johannes Haerteis | 0-6,0-6 |
| ITF Switzerland F2 | 2018/02/14 09:00 | Lukas Klein v Johannes Haerteis | 6-4,7-6 |
| ITF Switzerland F2 | 2018/02/13 11:40 | Johannes Haerteis v Hugo Grenier | 4-6,6-3,7-6 |
| ITF Switzerland F2 Qual | 2018/02/11 10:00 | Johannes Haerteis v Stefan Fiacan | 6-2,6-1 |
| ITF Egypt F14 | 2018/04/19 08:00 | Alessandro Bega v Patrik Niklas-Salminen | 6-4,6-4 |
| ITF Egypt F14 | 2018/04/17 08:00 | Vladyslav Orlov v Patrik Niklas-Salminen | 4-6,3-6 |
| ITF Israel F3 | 2018/03/23 07:00 | Patrik Niklas-Salminen v Harri Heliovaara | 3-6,0-6 |
| ITF Israel F3 | 2018/03/22 08:00 | Patrik Niklas-Salminen v Alexis Canter | 6-4,7-5 |
| ITF Israel F3 | 2018/03/21 10:40 | Matias Franco Descotte v Patrik Niklas-Salminen | 2-6,4-6 |
| ITF Israel F2 | 2018/03/15 08:00 | Harri Heliovaara v Patrik Niklas-Salminen | 6-2,6-3 |
| ITF Israel F2 | 2018/03/14 11:25 | Patrik Niklas-Salminen v Lucas Gerch | 6-1,6-4 |
| ITF Israel F2 | 2018/03/12 10:00 | Patrik Niklas-Salminen v Davide Albertoni | 6-2,6-0 |