Round: 54 Ground: Clay
| ITF Estonia F1 | 2017/07/25 08:00 | George Von Massow v Keisuke Numajiri | 6-2,6-2 |
| ITF Estonia F1 | 2017/07/23 13:00 | Keisuke Numajiri v Pelle Boerma | 5-7,6-4,6-1 |
| ITF Estonia F1 | 2017/07/23 07:00 | Keisuke Numajiri v Alex Hedman | 6-3,6-2 |
| ITF Lithuania F1 | 2017/07/18 12:45 | Laurynas Grigelis v Keisuke Numajiri | 6-1,6-3 |
| ITF Guam F1 | 2017/06/22 01:30 | Keisuke Numajiri v Ju-Hae Moon | 3-6,3-6 |
| ITF Guam F1 | 2017/06/19 01:15 | Per Nordstrom v Keisuke Numajiri | 1-6,3-6 |
| ITF Japan F7 | 2017/06/03 04:00 | Shoma Kato v Keisuke Numajiri | 6-4,6-1 |
| ITF Turkey F19 Qual | 2017/05/14 07:00 | Keisuke Numajiri v Alexander Pavlioutchenkov | 5-7,6-2,3-6 |
| ITF Estonia F1 | 2017/07/22 10:00 | Robin Erik Parts v Martin Valdo Randpere | 7-6,6-4 |
| ITF Poland F4 Qual | 2017/07/03 09:50 | Karol Drzewiecki v Martin Valdo Randpere | 6-1,6-1 |
| ITF Poland F4 Qual | 2017/07/02 08:00 | Martin Valdo Randpere v Robin Thour | 6-4,4-6,6-3 |
| ITF Poland F4 Qual | 2017/07/01 11:00 | Martin Valdo Randpere v Jakub Grzegorczyk | 3-6,6-3,6-1 |
| ITF Romania F4 | 2017/06/18 12:00 | Martin Valdo Randpere v Daniel Cozma | 2-6,4-6 |
| ITF Romania F3 | 2017/06/11 10:00 | Riccardo Maiga v Martin Valdo Randpere | 6-0,6-0 |
| ITF Portugal F3 Qual | 2017/03/12 12:30 | Jorge Hernando-Ruano v Martin Valdo Randpere | 6-3,6-2 |
| ITF Portugal F3 Qual | 2017/03/11 15:00 | Martin Valdo Randpere v Duarte Nuno Teixeira | 6-3,7-5 |