Stadium: Court 2 Round: 25 Ground: Clay
| ITF Switzerland F3 | 2017/08/14 09:00 | Issei Okamura v Maxence Beauge | 1-6,6-7 |
| ITF Thailand F5 | 2017/08/07 05:45 | Issei Okamura v Jacob Grills | 3-6,4-6 |
| ITF Thailand F4 | 2017/08/01 06:00 | Issei Okamura v Calum Puttergill | 5-7,6-0,4-6 |
| ITF China F14 | 2017/07/28 03:00 | Nikola Milojevic v Issei Okamura | 6-2,6-1 |
| ITF China F14 | 2017/07/26 02:00 | Francis Casey Alcantara v Issei Okamura | 6-4,5-7,2-6 |
| ITF China F14 | 2017/07/24 08:15 | Issei Okamura v Kento Takeuchi | 6-2,6-2 |
| ITF China F13 | 2017/07/18 07:05 | Jui-Chen Hung v Issei Okamura | 6-4,6-2 |
| ITF Guam F1 | 2017/06/21 02:30 | Takao Suzuki v Issei Okamura | 7-5,6-4 |
| ITF Switzerland F3 | 2017/08/16 12:40 | Antoine Bellier v Raphael Baltensperger | 3-6,6-2,6-2 |
| ITF Switzerland F3 | 2017/08/15 12:40 | Raphael Baltensperger v Johan Nikles | 4-6,6-2,6-4 |
| ITF Germany F7 | 2017/07/11 13:20 | Quentin Folliot v Raphael Baltensperger | 6-3,4-6,2-6 |
| ITF Germany F6 | 2017/07/08 13:45 | Raphael Baltensperger v Alexis Gautier | 4-6,1-6 |
| ITF Germany F6 | 2017/07/07 12:00 | Raphael Baltensperger v Daniel Dutra Da Silva | 6-0,6-2 |
| ITF Germany F6 | 2017/07/05 10:00 | Raphael Baltensperger v Adrian Oetzbach | 6-4,6-2 |
| ITF Netherlands F2 | 2017/06/28 15:00 | Raphael Baltensperger v Goncalo Oliveira | 4-6,6-1,0-6 |
| ITF Netherlands F2 | 2017/06/27 17:05 | Raphael Baltensperger v Thiemo De Bakker | 6-4,2-6,6-1 |