Stadium: C Round: 44 Ground: Clay
| Challenger Sopot Qual | 2018/07/28 09:00 | Karol Drzewiecki v Jonathan Mridha | 4-6,0-6 |
| ITF Germany F8 Qual | 2018/07/15 12:30 | Karol Drzewiecki v Tim Seibert | 5-7,2-6 |
| ITF Germany F8 Qual | 2018/07/15 08:30 | Karol Drzewiecki v Daniil Tsebrenko | 7-5,6-3 |
| ITF Germany F7 | 2018/07/11 11:25 | Dominik Boehler v Karol Drzewiecki | 6-2,6-1 |
| ITF Romania F2 Qual | 2018/05/28 07:30 | Karol Drzewiecki v Andrei Stefan Apostol | 2-6,4-6 |
| ITF Poland F3 | 2018/05/15 09:30 | Sekou Bangoura v Karol Drzewiecki | 3-6,7-6,6-1 |
| ITF Poland F3 Qual | 2018/05/14 07:30 | Karol Drzewiecki v Filip Kucbel | 6-7,7-6,6-2 |
| ITF Poland F3 | 2018/05/13 07:00 | Karol Drzewiecki v Adam Mlazga | 6-2,6-7,6-1 |
| ITF Poland F7 | 2018/08/11 08:00 | Arvid Nordquist v Peter Samosi | 6-4,6-1 |
| ITF Finland F4 Qual | 2017/11/11 13:30 | Arvid Nordquist v Aleksi Lofman | 4-6,4-6 |
| ITF Sweden F3 | 2017/09/24 08:00 | Kristjan Tamm v Arvid Nordquist | 6-3,6-7,3-6 |
| ITF Sweden F3 | 2017/09/23 08:00 | Almir Nokic v Arvid Nordquist | 3-6,0-6 |
| ITF Spain F29 Qual | 2017/09/11 08:00 | Vullnet Tashi v Arvid Nordquist | 6-3,6-1 |
| ITF Spain F29 Qual | 2017/09/10 08:00 | Tillmann Erdbories v Arvid Nordquist | 4-6,4-6 |
| ITF Spain F29 Qual | 2017/09/09 10:30 | Enric Guaita-Pais v Arvid Nordquist | 3-6,2-6 |
| Challenger Bastad Qual | 2017/07/08 11:25 | Arvid Nordquist v Jonas Eriksson Ziverts | 0-6,2-6 |