Round: 26 Ground: Synthetic outdoor
| ITF Japan F6 Qual | 2017/05/29 01:00 | Keisuke Watanuki v Yuto Sakai | 6-7,6-7 |
| ITF Japan F6 Qual | 2017/05/28 07:00 | Keisuke Watanuki v Yuto Sakai | 6-7,6-7 |
| ITF Japan F6 Qual | 2017/05/27 01:00 | Keisuke Watanuki v Sung Min Han | 6-4,6-0 |
| ITF Japan F5 | 2017/04/02 01:00 | Masaki Sasai v Keisuke Watanuki | 6-2,6-4 |
| ITF Japan F5 | 2017/04/01 02:00 | Takashi Yasugami v Keisuke Watanuki | 4-6,6-2,5-7 |
| ITF Japan F4 | 2017/03/28 01:00 | Masaya Kobayashi v Keisuke Watanuki | 6-3,6-2 |
| ITF Japan F4 | 2017/03/27 01:00 | Yuga Tashiro v Keisuke Watanuki | 2-6,6-7 |
| ITF Japan F4 | 2017/03/25 03:00 | Yu Chang v Keisuke Watanuki | 7-6,3-6,4-6 |
| ITF Japan F7 | 2017/06/05 03:05 | Shunrou Takeshima v Kento Takeuchi | 1-6,1-6 |
| ITF Japan F6 | 2017/06/02 04:00 | Kento Takeuchi v Shintaro Imai | 3-6,4-6 |
| ITF Japan F6 | 2017/06/01 02:00 | Kento Takeuchi v Tomohiro Masabayashi | 6-4,6-0 |
| ITF Japan F6 | 2017/05/31 01:00 | Kento Takeuchi v Tomohiro Masabayashi | 6-4,6-0 |
| ITF Japan F6 | 2017/05/30 03:55 | Kento Takeuchi v Issei Okamura | 7-6,6-3 |
| 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 |