Stadium: Court 2 Round: 25 Ground: Clay
| ITF Japan F6 | 2017/05/30 03:55 | Kento Takeuchi v Issei Okamura | 7-6,6-3 |
| ITF Singapore F1 | 2017/05/25 02:00 | Issei Okamura v Kazuki Nishiwaki | 6-7,1-6 |
| ITF China F7 | 2017/05/16 07:00 | Issei Okamura v Yusuke Takahashi | 7-5,2-6,4-6 |
| ITF China F6 | 2017/05/10 06:05 | Dayne Kelly v Issei Okamura | 6-4,6-3 |
| ITF China F6 | 2017/05/08 05:30 | Ruikai Wang v Issei Okamura | 3-6,1-6 |
| Challenger Anning Qual | 2017/04/22 03:35 | Issei Okamura v Denys Molchanov | 6-4,3-6,4-6 |
| Challenger Taipei Qual | 2017/04/17 04:35 | Ruan Roelofse v Issei Okamura | 6-4,6-2 |
| Challenger Taipei Qual | 2017/04/16 05:55 | Shao-Fan Liu v Issei Okamura | 6-7,6-4,3-6 |
| ITF Italy F15 | 2017/05/30 18:00 | Raphael Baltensperger v Michael Linzer | 2-6,6-7 |
| ITF Italy F15 | 2017/05/28 08:30 | Raphael Baltensperger v Michele Fois | 6-3,6-1 |
| ATP Geneva Qual | 2017/05/20 11:05 | Petr Michnev v Raphael Baltensperger | 6-2,6-4 |
| ITF Israel F6 | 2017/05/08 09:00 | Cameron Silverman v Raphael Baltensperger | 6-3,6-4 |
| ITF Israel F5 | 2017/05/04 07:00 | Dekel Bar v Raphael Baltensperger | 6-4,6-4 |
| ITF Israel F5 | 2017/05/03 09:45 | Alexis Gautier v Raphael Baltensperger | 6-3,4-6,4-6 |
| ITF Israel F4 | 2017/04/26 07:00 | Igor Smilansky v Raphael Baltensperger | 6-2,6-4 |
| ITF Israel F4 | 2017/04/25 06:30 | Raphael Baltensperger v Yannai Barkai | 3-6,6-4,6-2 |