Stadium: Court 8 Round: 26 Ground: Hardcourt indoor
| ITF Estonia F1 | 2018/07/17 08:45 | Martins Rocens v Karl Friberg | 5-7,0-6 |
| Challenger Bastad Qual | 2018/07/08 11:40 | Jules Okala v Karl Friberg | 6-0,6-0 |
| Challenger Bastad Qual | 2018/07/08 08:15 | Karl Friberg v Antoine Bellier | 6-2,6-4 |
| Challenger Bastad Qual | 2018/07/07 10:05 | Ruben Gonzales v Karl Friberg | 2-6,1-6 |
| Challenger Poprad Tatry Qual | 2018/06/16 12:20 | Karl Friberg v Vit Kopriva | 1-6,1-6 |
| ITF Hungary F4 | 2018/06/14 08:00 | Patricio Heras v Karl Friberg | 6-2,6-2 |
| ITF Hungary F4 | 2018/06/12 14:20 | Pavle Daljev v Karl Friberg | 2-6,4-6 |
| ITF Hungary F4 Qual | 2018/06/11 10:40 | Karl Friberg v Alexandru Vasile Manole | 6-4,6-4 |
| ITF Estonia F1 | 2018/07/17 08:35 | Paul Jubb v Denis Klok | 4-6,6-1,2-6 |
| ITF Netherlands F3 | 2018/07/09 10:00 | Sekou Bangoura v Denis Klok | 7-5,6-2 |
| ITF Netherlands F2 | 2018/07/06 12:15 | Harri Heliovaara v Denis Klok | 3-1 |
| ITF Netherlands F2 | 2018/07/05 11:20 | Denis Klok v Michiel de Krom | 7-6,4-6,7-5 |
| ITF Netherlands F2 | 2018/07/03 12:40 | Denis Klok v Stephan Fransen | 6-3,6-3 |
| ITF Germany F5 | 2018/06/27 16:00 | Denis Klok v Marvin Netuschil | 3-6,3-6 |
| ITF Hungary F4 Qual | 2018/06/10 08:00 | Denis Klok v Strahinja Rakic | 2-6,1-6 |
| ITF Hungary F3 | 2018/05/24 08:30 | Denis Klok v Marko Tepavac | 4-6,1-6 |