Stadium: Court 2 Round: 28 Ground: Hardcourt indoor
| ITF Estonia F3 | 2017/11/02 09:00 | Jonathan Mridha v Patrik Niklas-Salminen | 6-3,6-3 |
| ITF Finland F1 | 2016/08/03 13:00 | Patrik Niklas-Salminen v Jonathan Mridha | 3-6,4-6 |
| ITF Finland F3 | 2018/08/16 11:15 | Karl Friberg v Patrik Niklas-Salminen | 7-6,7-6 |
| ITF Finland F3 | 2018/08/15 10:00 | Matvey Minin v Patrik Niklas-Salminen | 5-7,4-6 |
| ITF Finland F3 | 2018/08/14 11:25 | Christoffer Solberg v Patrik Niklas-Salminen | 0-6,1-6 |
| ITF Finland F2 | 2018/08/10 12:00 | Laurent Rochette v Patrik Niklas-Salminen | 6-2,6-1 |
| ITF Finland F2 | 2018/08/09 12:00 | Patrik Niklas-Salminen v George Loffhagen | 7-6,1-6,6-2 |
| ITF Finland F2 | 2018/08/08 10:05 | Patrik Niklas-Salminen v Roni Mikael Hietaranta | 6-3,6-3 |
| ITF Finland F2 | 2018/08/07 10:00 | Patrik Niklas-Salminen v Eero Vasa | 6-2,6-3 |
| ITF Finland F1 | 2018/08/04 09:00 | Gustav Hansson v Patrik Niklas-Salminen | 7-6,6-0 |
| Challenger Cordenons | 2018/08/13 11:20 | Jonathan Mridha v Enzo Couacaud | 4-6,3-6 |
| Challenger Cordenons | 2018/08/12 12:40 | Jonathan Mridha v Artem Dubrivnyy | 6-1,6-2 |
| Challenger Cordenons | 2018/08/11 10:45 | Hugo Grenier v Jonathan Mridha | 4-6,2-6 |
| ITF Finland F2 | 2018/08/09 10:45 | Jonathan Mridha v Gustav Hansson | 2-6,5-7 |
| ITF Finland F2 | 2018/08/08 08:00 | Jonathan Mridha v Nathan Seateun | 7-6,6-3 |
| ITF Finland F2 | 2018/08/07 12:00 | Jonathan Mridha v Philip Bachmaier | 6-1,6-2 |
| Challenger Sopot Qual | 2018/07/30 08:30 | Maxime Janvier v Jonathan Mridha | 6-3,6-2 |
| Challenger Sopot Qual | 2018/07/28 09:00 | Karol Drzewiecki v Jonathan Mridha | 4-6,0-6 |