Stadium: Yonex Court Round: 27 Ground: Clay
| Challenger Braunschweig | 2018/07/10 15:20 | Rudolf Molleker v Jurgen Zopp | 7-5,3-6,4-6 |
| Challenger Marburg | 2018/07/04 16:45 | Julian Lenz v Rudolf Molleker | 3-6,6-3,7-6 |
| Challenger Marburg | 2018/07/03 16:05 | Rudolf Molleker v Yannick Hanfmann | 4-6,7-6,6-4 |
| ATP Halle | 2018/06/19 15:50 | Nikoloz Basilashvili v Rudolf Molleker | 6-4,7-6 |
| ATP Stuttgart | 2018/06/13 14:50 | Rudolf Molleker v Lucas Pouille | 3-6,4-6 |
| ATP Stuttgart | 2018/06/11 09:00 | Rudolf Molleker v Jan-Lennard Struff | 6-4,6-7,6-3 |
| Challenger Heilbronn | 2018/05/20 13:00 | Rudolf Molleker v Jiri Vesely | 4-6,6-4,7-5 |
| Challenger Heilbronn | 2018/05/19 15:00 | Juan Ignacio Londero v Rudolf Molleker | 6-4,3-6,2-6 |
| Challenger Marburg | 2018/07/04 12:00 | Pedro Sousa v Andrej Martin | 6-7,6-3,3-6 |
| Challenger Marburg | 2018/07/02 12:10 | Pedro Sousa v Nino Serdarusic | 6-4,6-1 |
| Challenger Milan | 2018/06/29 13:00 | Gianluca Mager v Pedro Sousa | 7-5,7-5 |
| Challenger Milan | 2018/06/28 13:00 | Federico Gaio v Pedro Sousa | 3-6,4-6 |
| Challenger Milan | 2018/06/26 10:20 | Facundo Arguello v Pedro Sousa | 6-4,4-6,4-6 |
| Challenger Blois | 2018/06/19 10:00 | Pedro Sousa v Tristan Lamasine | 3-6,4-6 |
| Challenger Lyon | 2018/06/11 12:30 | Pedro Sousa v Alexandre Muller | 5-7,3-6 |
| Challenger Poznan | 2018/06/05 10:40 | Alessandro Giannessi v Pedro Sousa | 6-2,6-3 |