Stadium: C Round: 25 Ground: Clay
| Challenger Portoroz | 2018/08/07 20:05 | Sergiy Stakhovsky v Christopher Heyman | 4-6,6-3,6-3 |
| Challenger Portoroz Qual | 2018/08/06 10:10 | Christopher Heyman v Markus Eriksson | 3-6,3-6 |
| Challenger Portoroz Qual | 2018/08/05 13:00 | Christopher Heyman v Nikola Cacic | 6-1,5-7,6-4 |
| Challenger Segovia | 2018/07/31 15:45 | Christopher Heyman v Joao Monteiro | 4-6,4-6 |
| ITF Germany F8 | 2018/07/20 11:00 | Manuel Pena Lopez v Christopher Heyman | 6-4,6-2 |
| ITF Germany F8 | 2018/07/19 09:30 | Marc Sieber v Christopher Heyman | 1-6,5-7 |
| ITF Germany F8 | 2018/07/18 15:10 | Pavle Daljev v Christopher Heyman | 3-6,4-6 |
| ITF Belgium F3 | 2018/07/06 15:00 | Christopher Heyman v Michael Geerts | 6-4,6-7,3-6 |
| ITF Poland F6 | 2018/08/06 13:20 | Michal Dembek v Kacper Zuk | 5-7,6-1,6-7 |
| Challenger Sopot | 2018/07/30 12:30 | Daniel Michalski v Michal Dembek | 6-2,6-4 |
| ITF Georgia F2 | 2018/07/18 08:00 | Michal Dembek v Shahin Khaledan | 3-6,4-6 |
| ITF Georgia F1 | 2018/07/10 08:05 | Michal Dembek v Maxim Ratniuk | 2-6,1-6 |
| ITF Sri Lanka F3 | 2018/06/28 04:00 | Manish Sureshkumar v Michal Dembek | 6-3,6-3 |
| ITF Sri Lanka F3 | 2018/06/27 04:00 | Anvit Bendre v Michal Dembek | 2-6,2-6 |
| ITF Sri Lanka F3 | 2018/06/26 06:30 | Niklas Johansson v Michal Dembek | 7-5,3-6,3-6 |
| Challenger Poprad Tatry Qual | 2018/06/16 09:10 | Michal Dembek v Thomas Statzberger | 4-6,6-7 |