Stadium: Court 1 Round: 25
| ITF Poland F7 | 2018/08/13 12:25 | Heyman, Christopher v Dembek, Michal | 6-2,7-5 |
| ITF Poland F6 | 2018/08/06 13:20 | Dembek, Michal v Kacper Zuk | 5-7,6-1,6-7 |
| Sopot, Pologne | 2018/07/30 12:30 | Daniel Michalski v Dembek, Michal | 6-2,6-4 |
| ITF Georgia F2 | 2018/07/18 08:00 | Dembek, Michal v Khaledan, Shahin | 3-6,4-6 |
| ITF Georgia F1 | 2018/07/10 08:05 | Dembek, Michal v Ratniuk, Maxim | 2-6,1-6 |
| Sri Lanka F3, Singles Qualifying | 2018/06/28 04:00 | Manish Sureshkumar v Dembek, Michal | 6-3,6-3 |
| Sri Lanka F3, Singles Qualifying | 2018/06/27 04:00 | Bendre, Anvit v Dembek, Michal | 2-6,2-6 |
| Sri Lanka F3, Singles Qualifying | 2018/06/26 06:30 | Johansson, Niklas v Dembek, Michal | 7-5,3-6,3-6 |
| ITF Poland F8 | 2018/08/20 09:30 | Drzewiecki, Karol v Zukauskas, Simonas | 4-6,6-3,6-4 |
| ITF Poland F8 | 2018/08/19 11:00 | Drzewiecki, Karol v Bednarek, Tomasz | 6-3,6-4 |
| ITF Poland F7 | 2018/08/14 14:35 | Drzewiecki, Karol v Mikula, Michal | 4-6,5-7 |
| ITF Poland F7 | 2018/08/13 08:00 | Drzewiecki, Karol v Zawisza, Pawel | 6-2,6-0 |
| ITF Poland F7 | 2018/08/12 11:00 | Drzewiecki, Karol v Arvid Nordquist | 6-2,6-4 |
| Challenger Sopot Qual | 2018/07/28 09:00 | Drzewiecki, Karol v Jonathan Mridha | 4-6,0-6 |
| ITF Germany F8 Qual | 2018/07/15 12:30 | Drzewiecki, Karol v Seibert, Tim | 5-7,2-6 |
| ITF Germany F8 Qual | 2018/07/15 08:30 | Drzewiecki, Karol v Tsebrenko, Daniil | 7-5,6-3 |