Stadium: Hortkorn Court Round: 45 Ground: Clay
| Challenger Ostrava Qual | 2018/04/28 10:40 | Julian Lenz v Juan Ignacio Galarza | 6-3,5-7,3-6 |
| Challenger Tunis Qual | 2018/04/14 09:30 | Julian Lenz v David Pichler | 2-6,3-6 |
| Challenger Lille Qual | 2018/03/18 13:40 | Julian Lenz v Antoine Escoffier | 6-7,4-6 |
| Challenger Lille Qual | 2018/03/17 14:10 | Maxime Tabatruong v Julian Lenz | 6-7,3-6 |
| ITF Switzerland F2 | 2018/02/15 11:00 | Niels Desein v Julian Lenz | 7-6,7-5 |
| ITF Switzerland F2 | 2018/02/14 10:55 | Julian Lenz v Petr Michnev | 6-3,6-3 |
| ITF Switzerland F2 | 2018/02/13 09:40 | Jan Mertl v Julian Lenz | 3-6,6-4,4-6 |
| ITF Switzerland F1 | 2018/02/09 13:00 | Julian Lenz v Tobias Simon | 6-7,4-6 |