Stadium: Court M Round: 26 Ground: Clay
| ITF Germany F8 | 2018/07/17 15:45 | Pedro Sakamoto v Julian Lenz | 5-7,1-6 |
| Challenger Marburg | 2018/07/06 14:00 | Hugo Dellien v Julian Lenz | 6-3,6-3 |
| Challenger Marburg | 2018/07/05 13:10 | Elliot Benchetrit v Julian Lenz | 4-6,5-7 |
| Challenger Marburg | 2018/07/04 16:45 | Julian Lenz v Rudolf Molleker | 3-6,6-3,7-6 |
| Challenger Marburg | 2018/07/02 14:00 | Sebastian Ofner v Julian Lenz | 1-6,6-7 |
| Challenger Heilbronn Qual | 2018/05/14 11:55 | Daniel Masur v Julian Lenz | 4-6,6-0,6-1 |
| Challenger Heilbronn Qual | 2018/05/13 13:00 | Julian Lenz v Adelchi Virgili | 6-3,6-2 |
| Challenger Heilbronn Qual | 2018/05/12 12:00 | Andrei Iakovlev v Julian Lenz | 0-6,0-6 |
| ITF Germany F8 | 2018/07/17 09:30 | Niklas Schell v Jordi Samper-Montana | 3-6,1-6 |
| Challenger Braunschweig Qual | 2018/07/08 09:00 | Maxime Janvier v Jordi Samper-Montana | 7-5,6-4 |
| Challenger Braunschweig Qual | 2018/07/07 11:30 | Tillmann Erdbories v Jordi Samper-Montana | 2-6,0-6 |
| Challenger Milan | 2018/06/26 10:55 | Laslo Djere v Jordi Samper-Montana | 6-2,5-7,6-1 |
| Challenger Milan Qual | 2018/06/24 13:10 | Jordi Samper-Montana v Joao Souza | 6-0,6-3 |
| Challenger Milan Qual | 2018/06/23 12:10 | Jannik Sinner v Jordi Samper-Montana | 3-6,4-6 |
| Challenger Blois Qual | 2018/06/17 11:25 | Sebastian Fanselow v Jordi Samper-Montana | 7-5,3-6,6-3 |
| Challenger Blois Qual | 2018/06/16 09:10 | Maxime Tabatruong v Jordi Samper-Montana | 4-6,0-6 |