Stadium: Ringi 3 Round: 27 Ground: Hardcourt indoor
| ITF Estonia F1 | 2018/07/18 08:00 | Niklas-Salminen, Patrick v Khomentovskiy, Matvey | 6-4,6-4 |
| ITF Estonia F1 | 2018/07/17 07:00 | Niklas-Salminen, Patrick v Lucas Renard | 6-1,6-2 |
| ITF Netherlands F2 | 2018/07/07 11:40 | Zhurbin, Alexander v Niklas-Salminen, Patrick | 6-3,3-6,6-2 |
| ITF Netherlands F2 | 2018/07/06 11:30 | Niklas-Salminen, Patrick v van Den Berg, Bart | 6-2,7-5 |
| ITF Netherlands F2 | 2018/07/05 11:35 | Niklas-Salminen, Patrick v Fernando Yamacita | 3-6,6-4,7-6 |
| ITF Netherlands F2 | 2018/07/03 10:05 | Guenther, Valentin v Niklas-Salminen, Patrick | 4-6,3-6 |
| ITF Spain F13 | 2018/05/28 12:00 | Emil Ruusuvuori v Niklas-Salminen, Patrick | 6-3,4-6,6-4 |
| ITF China F6 | 2018/05/20 02:30 | Niklas-Salminen, Patrick v Fajing Sun | 2-6,6-4,6-4 |
| ITF Estonia F1 | 2018/07/18 07:00 | Karl Friberg v Denis Klok | 4-6,6-3,5-7 |
| 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 | Bangoura, Sekou v Denis Klok | 7-5,6-2 |
| ITF Netherlands F2 | 2018/07/06 12:15 | Heliovaara, Harri 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 Fransen, Stephan | 6-3,6-3 |
| ITF Germany F5 | 2018/06/27 16:00 | Denis Klok v Netuschil, Marvin | 3-6,3-6 |
| ITF Hungary F4 Qual | 2018/06/10 08:00 | Denis Klok v Rakic, Strahinja | 2-6,1-6 |