Stadium: B & B Court Round: 26 Ground: Clay
| Challenger Meerbusch | 2018/08/13 10:20 | Gleb Sakharov v Dimitar Kuzmanov | 3-6,0-6 |
| Challenger Sopot | 2018/07/31 14:30 | Roberto Marcora v Dimitar Kuzmanov | 6-3,6-3 |
| Challenger Sopot Qual | 2018/07/30 15:15 | Dimitar Kuzmanov v Jan Zielinski | 6-0,6-1 |
| Challenger Sopot Qual | 2018/07/30 09:55 | Dimitar Kuzmanov v Grzegorz Panfil | 5-7,6-3,7-6 |
| Challenger Tampere Qual | 2018/07/23 08:00 | Dimitar Kuzmanov v Tristan Lamasine | 6-7,6-3,4-6 |
| Challenger Tampere Qual | 2018/07/22 08:50 | Dimitar Kuzmanov v Tom Kocevar-Desman | 6-4,2-6,6-3 |
| Challenger Tampere | 2018/07/21 09:45 | Dimitar Kuzmanov v Panu Virtanen | 6-2,6-0 |
| Challenger San Benedetto Qual | 2018/07/14 13:20 | Dimitar Kuzmanov v Antonio Massara | 5-7,4-6 |
| Challenger Meerbusch | 2018/08/14 10:15 | Maxime Janvier v Nicola Kuhn | 1-6,3-6 |
| Challenger Meerbusch Qual | 2018/08/13 09:00 | Nicola Kuhn v Yshai Oliel | 6-2,2-6,6-2 |
| Challenger Meerbusch Qual | 2018/08/12 10:55 | Nicola Kuhn v Raul Brancaccio | 6-4,3-6,7-6 |
| Challenger Meerbusch Qual | 2018/08/11 14:35 | Nicola Kuhn v Jonas Merckx | 7-5,6-4 |
| Challenger Sopot | 2018/07/31 10:25 | Nicola Kuhn v Paolo Lorenzi | 3-6,0-6 |
| Challenger Tampere | 2018/07/24 13:50 | Nicola Kuhn v Thiemo De Bakker | 6-7,1-6 |
| 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 |