Stadium: Court 10 Round: 26 Ground: Clay
| ITF Finland F1 | 2018/07/30 11:00 | Eero Vasa v Mika Kosonen | 7-5,3-6,2-6 |
| ITF Finland F1 Qual | 2018/07/29 07:00 | David Hough v Mika Kosonen | 6-7,3-6 |
| ITF Finland F1 Qual | 2018/07/28 07:00 | Riccardo Roberto v Mika Kosonen | 6-7,3-6 |
| ITF Finland F3 Qual | 2016/08/13 22:00 | Mitchell Thomas McDaniels v Mika Kosonen | 6-2,6-7,6-3 |
| ITF Finland F3 Qual | 2016/08/12 22:00 | Verneri Tuomi v Mika Kosonen | 1-6,3-6 |
| ITF Finland F2 | 2016/08/09 12:55 | Jonathan Mridha v Mika Kosonen | 6-3,6-4 |
| ITF Finland F2 Qual | 2016/08/07 11:30 | Esteban Bruna v Mika Kosonen | 5-7,5-7 |
| ITF Estonia F1 | 2016/07/24 22:00 | Henrik Sillanpaa v Mika Kosonen | 3-6,6-3,6-3 |
| ITF Finland F1 | 2018/07/31 12:45 | Christoffer Solberg v Patrik Niklas-Salminen | 2-6,4-6 |
| Challenger Tampere | 2018/07/24 14:00 | Patrik Niklas-Salminen v Ivan Gakhov | 2-6,6-7 |
| ITF Estonia F1 | 2018/07/20 09:00 | Markos Kalovelonis v Patrik Niklas-Salminen | 6-4,7-5 |
| ITF Estonia F1 | 2018/07/19 07:00 | Patrik Niklas-Salminen v Denis Klok | 7-6,6-2 |
| ITF Estonia F1 | 2018/07/18 08:00 | Patrik Niklas-Salminen v Matvey Khomentovskiy | 6-4,6-4 |
| ITF Estonia F1 | 2018/07/17 07:00 | Patrik Niklas-Salminen v Lucas Renard | 6-1,6-2 |
| ITF Netherlands F2 | 2018/07/07 11:40 | Alexander Zhurbin v Patrik Niklas-Salminen | 6-3,3-6,6-2 |
| ITF Netherlands F2 | 2018/07/06 11:30 | Patrik Niklas-Salminen v Bart Van Den Berg | 6-2,7-5 |