Stadium: Court 5 Round: 45 Ground: Clay
| Challenger Sibiu | 2018/09/18 10:00 | Simone Bolelli v Jeremy Jahn | 6-4,6-4 |
| Challenger Sibiu | 2018/09/17 08:00 | Javier Barranco Cosano v Jeremy Jahn | 1-6,4-6 |
| Challenger Sibiu | 2018/09/16 07:00 | Mircea-Alexandru Jecan v Jeremy Jahn | 3-6,1-6 |
| Challenger Mallorca | 2018/08/26 09:50 | Joao Menezes v Jeremy Jahn | 6-3,6-4 |
| ITF Poland F7 | 2018/08/19 09:00 | Jeremy Jahn v Pedro Sakamoto | 6-3,6-4 |
| ITF Poland F7 | 2018/08/18 10:00 | Thiago Seyboth Wild v Jeremy Jahn | 5-7,6-7 |
| ITF Poland F7 | 2018/08/17 10:30 | Jeremy Jahn v Christian Lindell | 6-1,6-4 |
| ITF Poland F7 | 2018/08/16 10:45 | Jeremy Jahn v Eduardo Dischinger | 6-4,6-3 |
| Challenger Istanbul | 2018/09/10 10:20 | Quentin Halys v Nicola Kuhn | 6-3,6-4 |
| Challenger Seville | 2018/09/04 17:00 | Marco Trungelliti v Nicola Kuhn | 5-7,6-4,6-4 |
| Challenger Mallorca | 2018/08/31 11:35 | Nicola Kuhn v Enrique Lopez-Perez | 1-6,6-7 |
| Challenger Mallorca | 2018/08/30 13:10 | Ramkumar Ramanathan v Nicola Kuhn | 7-6,6-7,4-6 |
| Challenger Mallorca | 2018/08/29 15:30 | James Ward v Nicola Kuhn | 7-6,6-7,6-7 |
| Challenger Meerbusch | 2018/08/17 15:45 | Filip Horansky v Nicola Kuhn | 6-4,1-6,6-1 |
| Challenger Meerbusch | 2018/08/15 12:25 | Dimitar Kuzmanov v Nicola Kuhn | 4-6,4-6 |
| Challenger Meerbusch | 2018/08/14 10:15 | Maxime Janvier v Nicola Kuhn | 1-6,3-6 |