Stadium: Court 5 Round: 45 Ground: Clay
| Challenger Scheveningen | 2018/07/16 16:30 | Tobias Kamke v Jeremy Jahn | 6-4,3-6,7-6 |
| Challenger Scheveningen Qual | 2018/07/16 11:30 | Jeremy Jahn v Kimmer Coppejans | 6-7,5-7 |
| Challenger Scheveningen Qual | 2018/07/15 11:55 | Jeremy Jahn v Niels Lootsma | 7-6,4-6,7-5 |
| Challenger Scheveningen Qual | 2018/07/14 15:15 | Jeremy Jahn v Dan Added | 6-1,6-2 |
| Challenger Poznan | 2018/06/07 16:45 | Alexey Vatutin v Jeremy Jahn | 7-6,4-6,6-3 |
| Challenger Poznan | 2018/06/06 14:00 | Jeremy Jahn v Kamil Majchrzak | 6-3,2-6,6-0 |
| Challenger Poznan Qual | 2018/06/04 13:30 | Jeremy Jahn v Guillermo Olaso | 6-7,6-1,6-2 |
| Challenger Poznan Qual | 2018/06/04 08:00 | Bernabe Zapata Miralles v Jeremy Jahn | 4-6,6-3,0-6 |
| Challenger Scheveningen | 2018/07/19 13:40 | Nicola Kuhn v Attila Balazs | 3-6,4-6 |
| Challenger Scheveningen | 2018/07/17 13:15 | Lloyd Harris v Nicola Kuhn | 1-6,7-6,3-6 |
| Challenger Braunschweig | 2018/07/10 13:05 | Yannick Hanfmann v Nicola Kuhn | 6-1,6-3 |
| Challenger Milan | 2018/06/26 09:00 | Nicola Kuhn v Gianluca Mager | 2-6,1-6 |
| ATP Miami | 2018/03/24 20:55 | Nicola Kuhn v Fabio Fognini | 2-6,4-6 |
| ATP Miami | 2018/03/22 15:00 | Nicola Kuhn v Darian King | 7-6,6-4 |
| Challenger Drummondville | 2018/03/13 19:45 | Nicola Kuhn v Jared Hiltzik | 4-6,3-6 |
| Challenger Bergamo | 2018/02/21 15:50 | Nicola Kuhn v Constant Lestienne | 6-7,4-6 |