Stadium: Court 6 Round: 26 Ground: Clay
| ITF Finland F4 | 2018/11/14 15:00 | Otto Virtanen v Patrik Niklas-Salminen | 6-3,7-6 |
| ITF Finland F4 | 2018/11/13 15:50 | Mikko Rouvala v Patrik Niklas-Salminen | 0-6,0-6 |
| Challenger Bratislava | 2018/11/04 10:20 | Alexander Bublik v Patrik Niklas-Salminen | 6-4,7-6 |
| Challenger Bratislava | 2018/11/03 11:15 | Samuel Puskar v Patrik Niklas-Salminen | 2-6,3-6 |
| Challenger Eckental | 2018/10/28 10:00 | Alexander Bublik v Patrik Niklas-Salminen | 7-6,6-3 |
| Challenger Ismaning | 2018/10/13 13:30 | Geoffrey Blancaneaux v Patrik Niklas-Salminen | 6-4,6-3 |
| ITF Sweden F5 | 2018/10/06 10:00 | Emil Ruusuvuori v Patrik Niklas-Salminen | 6-4,6-4 |
| ITF Sweden F5 | 2018/10/05 14:30 | Patrik Niklas-Salminen v Jonathan Mridha | 7-6,6-4 |