Round: 26 Ground: Clay
| ITF Japan F6 | 2017/05/31 01:00 | Niki, Takuto v Masaya Kobayashi | 6-2,6-3 |
| ITF Japan F6 | 2017/05/31 01:00 | Niki, Takuto v Masaya Kobayashi | 6-2,6-3 |
| ITF Japan F6 | 2017/05/30 03:30 | Niki, Takuto v Furuta, Ibuki | 6-2,6-2 |
| ITF China F8 | 2017/05/26 04:20 | Rubin Statham v Niki, Takuto | 7-6,7-6 |
| ITF China F8 | 2017/05/25 05:25 | Wang, Chuhan v Niki, Takuto | 3-6,1-6 |
| ITF China F8 | 2017/05/25 02:00 | Wang, Chuhan v Niki, Takuto | 3-6,1-6 |
| ITF China F8 | 2017/05/23 04:00 | Naoki Nakagawa v Niki, Takuto | 3-6,2-6 |
| Challenger Busan Qual | 2017/05/15 03:25 | Niki, Takuto v Corrie, Edward | 4-6,6-4,4-6 |
| Challenger Busan Qual | 2017/05/14 03:50 | Niki, Takuto v Oh, Seong-Gook | 6-4,6-3 |
| ITF Japan F6 | 2017/05/31 01:00 | Niki, Takuto v Masaya Kobayashi | 6-2,6-3 |
| ITF Japan F6 | 2017/05/30 02:20 | Masaya Kobayashi v Luca Castelnuovo | 6-4,7-6 |
| ITF Japan F5 | 2017/04/04 02:40 | Masaya Kobayashi v Katayama, Sho | 1-6,2-6 |
| ITF Japan F4 | 2017/03/29 01:00 | Masaya Kobayashi v Onishi, Ken | 4-6,6-7 |
| ITF Japan F4 | 2017/03/28 01:00 | Masaya Kobayashi v Watanuki, Keisuke | 6-3,6-2 |
| ITF Japan F4 | 2017/03/27 01:00 | Masaya Kobayashi v Aoran Wang | 7-6,7-6 |
| ITF Japan F3 | 2017/03/20 01:00 | Masaya Kobayashi v Chan-Yeong Oh | 4-6,2-6 |
| ITF Japan F3 | 2017/03/19 01:00 | Masaya Kobayashi v Tanaka, Yunosuke | 5-7,6-2,6-1 |