Stadium: Indoor 6 Round: 27 Ground: Hardcourt outdoor
| ITF Japan F4 | 2014/04/01 02:25 | Takuto Niki v Soichiro Moritani | 6-2,6-1 |
| ITF Japan F1 | 2018/03/08 03:10 | Takuto Niki v Yuya Kibi | 6-3,7-5 |
| 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 Qual | 2018/01/27 06:00 | Takuto Niki v N. Vijay Sundar Prashanth | 4-6,3-6 |
| ITF Japan F1 | 2018/03/08 05:35 | Shinji Hazawa v Soichiro Moritani | 6-7,2-6 |
| ITF Japan F1 | 2018/03/07 06:00 | Soichiro Moritani v Brydan Klein | 7-6,7-5 |
| ITF Hong Kong F6 | 2018/01/01 02:00 | Soichiro Moritani v Emil Ruusuvuori | 0-6,4-6 |
| ITF Hong Kong F5 | 2017/12/24 03:00 | Soichiro Moritani v Masaya Kobayashi | 2-6,2-6 |
| ITF Hong Kong F5 | 2017/12/23 05:00 | Soichiro Moritani v Ching Lam | 6-1,6-4 |
| ITF Indonesia F8 | 2017/11/29 08:00 | Soichiro Moritani v Andrew Harris | 2-6,3-6 |
| ITF Indonesia F8 | 2017/11/28 03:30 | Soichiro Moritani v Justin Barki | 7-6,6-4 |
| ITF Indonesia F7 | 2017/11/20 03:30 | Soichiro Moritani v Ti Chen | 3-6,5-7 |