Stadium: Court 2 Round: 27 Ground: Hardcourt outdoor
| ITF Japan F3 | 2016/03/21 03:45 | Gao, Xin v Niki, Takuto | 2-6,6-2,6-2 |
| ITF China F6 | 2015/05/28 02:00 | Gao, Xin v Niki, Takuto | 6-2,7-6 |
| Yinchuan, Simples M-ITF-CHN-11A | 2019/06/28 07:15 | Niki, Takuto v Ivan Liutarevich | 7-6,7-5 |
| Yinchuan, Simples M-ITF-CHN-11A | 2019/06/28 03:20 | Lo, Chien Hsun v Niki, Takuto | 3-6,6-4,0-6 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/21 01:00 | Yuta Shimizu v Niki, Takuto | 6-2,7-6 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/20 04:05 | Seon Yong Han v Niki, Takuto | 4-6,2-6 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/19 02:30 | Berg, Conor v Niki, Takuto | 4-6,1-6 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/12 01:00 | Niki, Takuto v Jeong, Young-Hoon | 4-6,6-7 |
| ITF M15 Daegu | 2019/06/05 05:00 | Kim, Young Seok v Niki, Takuto | 6-4,6-3 |
| Singapore, Singles Qualifying M-ITF-SGP-01A | 2019/05/29 02:00 | Dahiya, Jatin v Niki, Takuto | 1-6,4-6 |
| Yinchuan, Simples M-ITF-CHN-11A | 2019/06/28 07:00 | Gao, Xin v Shinji Hazawa | 6-2,6-4 |
| Yinchuan, Simples M-ITF-CHN-11A | 2019/06/28 01:30 | Chen, Liran v Gao, Xin | 4-6,2-6 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/14 02:00 | Shintaro Imai v Gao, Xin | 6-4,6-7,6-3 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/13 03:45 | Tikhomirov, Maksim v Gao, Xin | 6-7,1-6 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/11 08:15 | Gao, Xin v Blake Ellis | 7-6,6-4 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/06 02:00 | Sekiguchi, Shuichi v Gao, Xin | 6-3,6-1 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/05 02:30 | Tikhomirov, Maksim v Gao, Xin | 6-4,1-6,1-6 |
| Luzhou, Simples M-ITF-CHN-07A | 2019/05/31 02:00 | He, Yecong v Gao, Xin | 6-3,6-4 |