Round: 25 Ground: Hardcourt outdoor
| ITF Poland F3 Qual | 2017/06/26 09:00 | Karl Friberg v Mattias Siimar | 4-6,6-2,0-6 |
| 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 Qatar F3 | 2017/04/19 12:00 | Kris Krawcewicz v Hubert Hurkacz | 3-6,3-6 |
| ITF Qatar F3 Qual | 2017/04/17 12:00 | Kris Krawcewicz v Deivids Juksa | 6-3,3-6,6-7 |
| ITF Qatar F3 Qual | 2017/04/16 13:20 | Kris Krawcewicz v Mohammad Khingi | 6-1,6-1 |
| ITF Qatar F2 Qual | 2017/04/10 12:00 | Kris Krawcewicz v Marek Semjan | 7-5,5-7,1-6 |
| ITF Qatar F2 Qual | 2017/04/09 12:00 | Dalwinder Singh v Kris Krawcewicz | 6-2,4-6,2-6 |
| ITF Qatar F2 Qual | 2017/04/08 12:00 | Andrej Glvac v Kris Krawcewicz | 6-7,1-6 |
| ITF Qatar F1 Qual | 2017/04/03 14:40 | Kris Krawcewicz v Jurgen Briand | 2-6,1-6 |
| ITF Qatar F1 Qual | 2017/04/02 12:00 | Michal Dembek v Kris Krawcewicz | 3-6,7-5,6-7 |