Stadium: Indoor 6 Round: 26 Ground: Hardcourt outdoor
| Challenger Bangkok 4 | 2016/08/29 06:55 | Yuya Kibi v Takuto Niki | 4-6,6-3,6-2 |
| ITF Japan F5 | 2014/06/07 05:30 | Takuto Niki v Yuya Kibi | 6-4,3-6,6-1 |
| ITF Japan F3 | 2014/03/29 01:30 | Takuto Niki v Yuya Kibi | 6-2,7-6 |
| ITF Japan F1 | 2018/03/07 04:45 | Takuto Niki v Naoya Maesaki | 6-2,6-7,6-2 |
| Challenger Yokohama Qual | 2018/02/25 02:35 | Yunseong Chung v Takuto Niki | 6-7,6-3,6-3 |
| Challenger Yokohama Qual | 2018/02/24 07:05 | Takuto Niki v N.Sriram Balaji | 3-6,7-6,7-5 |
| Challenger Kyoto Qual | 2018/02/19 03:45 | Blake Ellis v Takuto Niki | 6-3,6-4 |
| Challenger Kyoto Qual | 2018/02/18 06:05 | Masaki Osafune v Takuto Niki | 3-6,2-6 |
| Challenger Kyoto Qual | 2018/02/17 07:50 | Kaito Itsusaki v Takuto Niki | 4-6,0-6 |
| Challenger Burnie Kwalifikacje | 2018/01/27 06:00 | Takuto Niki v N. Vijay Sundar Prashanth | 4-6,3-6 |
| Challenger Burnie Kwalifikacje | 2018/01/27 02:25 | Takuto Niki v Thomas Bosancic | 6-3,6-2 |
| ITF Japan F1 | 2018/03/06 02:00 | Yuya Kibi v Kaito Uesugi | 7-6,4-6,6-3 |
| Challenger Kyoto | 2018/02/20 05:35 | Yuya Kibi v Hubert Hurkacz | 5-7,3-6 |
| Challenger Kyoto Qual | 2018/02/19 03:30 | Luke Saville v Yuya Kibi | 3-6,3-6 |
| Challenger Kyoto Qual | 2018/02/18 04:25 | Tung-Lin Wu v Yuya Kibi | 6-2,1-6,1-6 |
| Challenger Kyoto Qual | 2018/02/17 06:10 | Yuya Kibi v Shuichi Sekiguchi | 6-3,6-2 |
| Challenger Bangkok | 2018/01/09 04:55 | Mats Moraing v Yuya Kibi | 6-2,6-2 |
| Challenger Bangkok Qual | 2018/01/08 03:00 | Daniiar Duldaev v Yuya Kibi | 2-6,2-6 |
| Challenger Bangkok Qual | 2017/12/31 03:00 | Yuya Kibi v Evgeny Karlovskiy | 1-6,3-6 |