Stadium: Court 4 Round: 25
| Challenger Toyota Qual | 2017/11/11 03:40 | Issei Okamura v Makoto Ochi | 6-7,6-7 |
| Challenger Kobe Qual | 2017/11/04 06:30 | Issei Okamura v Takuto Niki | 6-3,2-6,2-6 |
| ITF Thailand F9 | 2017/10/16 05:20 | Issei Okamura v Enrico Dalla Valle | 6-4,3-6,2-6 |
| ITF Thailand F8 Qual | 2017/10/09 03:25 | Riccardo Balzerani v Issei Okamura | 6-3,6-1 |
| ITF Thailand F8 Qual | 2017/10/08 07:20 | Remy Bertola v Issei Okamura | 6-3,3-6,6-7 |
| ITF Thailand F7 Qual | 2017/10/02 02:30 | Issei Okamura v Matteo Martineau | 6-4,6-7,2-6 |
| ITF Thailand F7 Qual | 2017/10/01 08:25 | Issei Okamura v Jirat Navasirisomboon | 6-3,6-1 |
| ITF Switzerland F5 | 2017/08/28 10:25 | Issei Okamura v Juan Manuel Benitez Chavarriaga | 7-5,5-7,3-6 |
| ITF Vietnam F2 | 2017/11/14 06:00 | Jakub Paul v Yan Sabanin | 6-1,6-1 |
| ITF Germany F16 | 2017/10/25 10:00 | Yan Sabanin v Altug Celikbilek | 4-6,6-7 |
| ITF Germany F16 | 2017/10/24 09:00 | Yan Sabanin v Gibril Diarra | 6-3,7-5 |
| Challenger Ismaning Qual | 2017/10/14 14:25 | Tobias Simon v Yan Sabanin | 6-4,6-2 |
| ITF Germany F14 | 2017/10/11 12:00 | Sebastian Prechtel v Yan Sabanin | 6-2,6-4 |
| ITF Ukraine F5 | 2017/09/09 08:00 | Yan Sabanin v Ivan Nedelko | 0-6,0-6 |
| ITF Ukraine F5 | 2017/09/08 09:40 | Julian Onken v Yan Sabanin | 4-6,7-6,3-6 |
| ITF Ukraine F5 | 2017/09/07 07:00 | Yan Sabanin v Dmytro Kamynin | 6-3,6-4 |