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