Stadium: Court 2 Round: 44 Ground: Hardcourt outdoor
| ITF Spain F25 | 2017/08/14 09:30 | Sorni Chavarria, Quim v Dernowski, Dietrich | 6-2,6-3 |
| ITF Spain F25 | 2017/08/13 10:00 | Garcia Torrealba, Nicolas v Dernowski, Dietrich | 4-6,3-6 |
| ITF Spain F23 Qual | 2017/07/22 09:15 | Klimov, Daniil v Dernowski, Dietrich | 6-3,6-1 |
| ITF Spain F22 Qual | 2017/07/17 09:35 | Knight, Alexander v Dernowski, Dietrich | 6-4,7-6 |
| ITF Spain F21 Qual | 2017/07/10 09:30 | Garcia Saez, Alejandro v Dernowski, Dietrich | 4-6,6-1,7-5 |
| ITF Spain F21 Qual | 2017/07/09 09:00 | Aranzabal, Mikel v Dernowski, Dietrich | 2-6,6-4,3-6 |
| ITF Spain F21 Qual | 2017/07/08 11:00 | Pol Martin Tiffon v Dernowski, Dietrich | 6-2,4-6,5-7 |
| ITF Romania F5 | 2017/06/25 11:00 | Pata, David v Dernowski, Dietrich | 7-5,7-6 |
| ITF Russia F7 Qual | 2017/08/14 09:00 | Andrey Chepelev v Valentsev, Nikita | 6-4,6-3 |
| ITF Russia F7 Qual | 2017/08/13 07:00 | Besednikov, Oleg v Valentsev, Nikita | 6-3,3-6,4-6 |
| ITF Russia F6 Qual | 2017/08/07 07:00 | Korolev, Vladimir v Valentsev, Nikita | 6-3,6-4 |
| ITF Russia F5 | 2017/08/01 08:40 | Valentsev, Nikita v Katic, Dejan | 1-6,3-6 |
| ITF Russia F4 | 2017/07/24 10:10 | Valentsev, Nikita v Katic, Dejan | 3-6,4-6 |
| ITF Russia F3 Qual | 2017/07/02 07:00 | Mikhaylyuk, Ivan v Valentsev, Nikita | 6-1,6-1 |
| ITF Russia F2 | 2017/06/26 11:35 | Sabanin, Yan v Valentsev, Nikita | 6-2,6-3 |
| ITF Turkey F19 | 2017/05/16 07:00 | Davydov, Ivan v Valentsev, Nikita | 6-3,6-4 |