Round: 25 Ground: Clay
| ITF Japan F7 | 2016/06/06 02:50 | Issei Okamura v Kento Takeuchi | 2-6,3-6 |
| ITF Japan F1 | 2016/03/08 01:00 | Issei Okamura v Kento Takeuchi | 7-6,7-6 |
| ITF Singapore F1 | 2017/05/26 13:30 | Wishaya Trongcharoenchaikul v Kento Takeuchi | 4-6,6-4,6-3 |
| ITF Singapore F1 | 2017/05/26 02:00 | Yuichi Ito v Kento Takeuchi | 2-6,3-6 |
| ITF Singapore F1 | 2017/05/23 02:00 | Dalwinder Singh v Kento Takeuchi | 4-6,4-6 |
| ITF China F7 | 2017/05/17 02:00 | Kento Takeuchi v Shintaro Imai | 2-6,4-6 |
| ITF China F7 | 2017/05/15 05:30 | Weibowen Zou v Kento Takeuchi | 4-6,1-6 |
| ITF China F6 | 2017/05/11 03:00 | Kento Takeuchi v Wishaya Trongcharoenchaikul | 5-7,3-6 |
| ITF China F6 | 2017/05/10 02:00 | Kento Takeuchi v Haitong Xia | 6-0,6-2 |
| ITF Indonesia F6 | 2017/04/11 05:30 | Kento Takeuchi v Jonathan Gray | 6-4,6-7,3-6 |
| 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 Japan F5 | 2017/04/04 00:30 | Issei Okamura v Takao Suzuki | 6-7,3-6 |