Round: 44 Ground: Hardcourt outdoor
| ITF Poland F3 Qual | 2017/06/25 08:00 | Karl Friberg v Mikolaj Borkowski | 6-4,6-2 |
| ITF Poland F2 | 2017/06/17 08:00 | Elliott Orkin v Karl Friberg | 6-4,1-6,7-5 |
| ITF Poland F1 | 2017/06/13 08:00 | Mariano Kestelboim v Karl Friberg | 6-4,6-0 |
| ITF Poland F1 | 2017/06/11 08:00 | Piotr Matuszewski v Karl Friberg | 6-7,6-7 |
| ITF Sweden F2 | 2017/05/16 09:35 | Karl Friberg v Jeremy Jahn | 5-7,2-6 |
| ITF Sweden F1 | 2017/05/11 08:15 | Jan Choinski v Karl Friberg | 4-6,6-1,6-4 |
| ITF Sweden F1 | 2017/05/10 08:15 | Karl Friberg v Lucas Renard | 6-2,6-4 |
| ITF Sweden F1 | 2017/05/08 10:30 | Fred Simonsson v Karl Friberg | 4-6,5-7 |
| ITF Poland F3 Qual | 2017/06/25 08:00 | Elliott Orkin v Mattias Siimar | 5-7,1-6 |
| ITF Italy F16 Qual | 2017/06/04 13:05 | Wilson Leite v Mattias Siimar | 6-4,6-0 |
| ITF Italy F16 Qual | 2017/06/03 08:30 | Paolo Dagnino v Mattias Siimar | 2-6,3-6 |
| Davis Cup | 2017/04/09 09:00 | Mattias Siimar v Lucas Catarina | 4-6,6-4,6-7 |
| Davis Cup | 2017/02/05 08:00 | Lloyd Harris v Mattias Siimar | 7-5,6-3 |
| ITF Egypt F2 | 2017/01/23 08:00 | Libor Salaba v Mattias Siimar | 7-6,6-3 |
| ITF Egypt F2 | 2017/01/22 10:30 | Mattias Siimar v Nicolas Uryson | 6-2,6-7,6-4 |
| ITF Estonia F3 | 2016/11/01 12:05 | Alexander Vasilenko v Mattias Siimar | 6-1,6-3 |