Stadium: Court G Round: 24 Ground: Hardcourt indoor
| ITF Chinese Taipei F2 | 2016/10/21 02:00 | Ryota Tanuma v Takuto Niki | 4-6,5-7 |
| ITF Japan F4 | 2016/03/30 01:00 | Takuto Niki v Ryota Tanuma | 4-6,5-7 |
| ITF M15 - Changwon | 2019/10/16 05:40 | Ryota Tanuma v Shintaro Mochizuki | 3-6,1-6 |
| ITF M15 Nanchang | 2019/09/22 03:00 | Ryota Tanuma v Dusty H. Boyer | 6-3,6-4 |
| ITF M15 Nanchang | 2019/09/21 04:55 | Makoto Ochi v Ryota Tanuma | 2-6,6-1,3-6 |
| ITF M15 Nanchang | 2019/09/20 03:30 | Ryota Tanuma v Vinayak Sharma Kaza | 6-4,6-1 |
| ITF M15 Nanchang | 2019/09/19 03:45 | Ryota Tanuma v Prithvi Sekhar | 6-0,6-0 |
| ITF M15 Nanchang | 2019/09/18 02:00 | Ryota Tanuma v Oleg Khotkov | 2-6,6-3,7-5 |
| ITF M15 - Hua Hin | 2019/09/05 03:00 | George Loffhagen v Ryota Tanuma | 6-2,6-1 |
| ITF M15 - Hua Hin | 2019/09/04 03:00 | Chanchai Sookton-Eng v Ryota Tanuma | 2-6,0-6 |
| Challenger Liuzhou | 2019/10/21 06:00 | Yunseong Chung v Takuto Niki | 6-2,7-6 |
| ITF M15 - Changwon | 2019/10/16 04:50 | Ryohei Tagata v Takuto Niki | 7-5,2-6,6-4 |
| ITF - M15 Fayetteville | 2019/09/20 19:30 | Takuto Niki v Oscar Mesquida Berg | 7-6,3-6,6-4 |
| ITF - M15 Fayetteville | 2019/09/19 14:00 | Takuto Niki v Eduardo Nava | 7-5,7-5 |
| ITF - M15 Fayetteville | 2019/09/18 14:00 | Takuto Niki v Ryan Goetz | 7-5,6-4 |
| ITF - M15 Champaign | 2019/09/11 16:00 | Takuto Niki v Matheus P De Almeida | 1-6,5-7 |
| ITF M15 Sajur | 2019/09/05 07:50 | Yair Sarouk v Takuto Niki | 7-5,6-3 |
| ITF M15 Sajur | 2019/09/04 12:35 | Ran Amar v Takuto Niki | 0-6,3-6 |