Stadium: Court 2 Round: 27 Ground: Hardcourt outdoor
| ITF Japan F5 | 2018/04/04 01:00 | Takuto Niki v Hiroyasu Ehara | 2-6,6-2,4-6 |
| Challenger Gimcheon Qual | 2017/04/29 05:10 | Takuto Niki v Hiroyasu Ehara | 6-1,6-4 |
| ITF Japan F1 | 2017/03/11 01:00 | Hiroyasu Ehara v Takuto Niki | 2-6,1-6 |
| Challenger Yokohama Qual | 2017/02/26 03:20 | Hiroyasu Ehara v Takuto Niki | 7-6,1-6,3-6 |
| ITF Japan F3 | 2015/03/26 03:45 | Hiroyasu Ehara v Takuto Niki | 6-4,3-6,3-6 |
| ITF Japan F2 | 2015/03/21 03:20 | Takuto Niki v Hiroyasu Ehara | 6-3,6-7,6-2 |
| ITF M15 Kofu | 2019/03/21 04:40 | Takuto Niki v Sho Katayama | 4-6,7-6,6-4 |
| ITF M15 Kofu | 2019/03/20 01:00 | Hong Kit Wong v Takuto Niki | 6-3,4-6,2-6 |
| ITF M15 Nishi-Tokyo | 2019/03/16 01:00 | Takuto Niki v Shuichi Sekiguchi | 4-6,7-6,3-6 |
| ITF M15 Nishi-Tokyo | 2019/03/15 01:00 | Takuto Niki v Yuta Shimizu | 7-6,1-6,6-3 |
| ITF M15 Nishi-Tokyo | 2019/03/14 02:25 | Makoto Ochi v Takuto Niki | 3-6,6-3,1-6 |
| ITF M15 Nishi-Tokyo | 2019/03/13 04:25 | Jie Cui v Takuto Niki | 4-6,6-7 |
| ITF M15 Nishi-Tama | 2019/03/06 04:00 | Takuto Niki v Ji Sung Nam | 4-6,2-6 |
| Challenger Kobe | 2018/11/10 05:15 | Takuto Niki v Taisei Ichikawa | 6-2,6-7,3-6 |
| ITF M15 Kofu | 2019/03/21 02:00 | Hiroyasu Ehara v Tamaki Yamao | 6-3,4-6,6-0 |
| ITF M15 Kofu | 2019/03/19 02:05 | Shohei Chikami v Hiroyasu Ehara | 4-6,1-6 |
| ITF M15 Nishi-Tokyo | 2019/03/16 03:45 | Seong Chan Hong v Hiroyasu Ehara | 6-2,6-3 |
| ITF M15 Nishi-Tokyo | 2019/03/15 02:20 | Hiroyasu Ehara v Ji Sung Nam | 6-3,3-6,7-6 |
| ITF M15 Nishi-Tokyo | 2019/03/13 01:00 | Sora Fukuda v Hiroyasu Ehara | 3-6,7-5,1-6 |
| ITF M15 Nishi-Tama | 2019/03/08 06:25 | Hiroyasu Ehara v Ji Sung Nam | 4-6,2-6 |
| ITF M15 Nishi-Tama | 2019/03/08 02:25 | Hiroyasu Ehara v Yuki Mochizuki | 6-3,4-6,7-5 |
| ITF M15 Nishi-Tama | 2019/03/05 03:30 | Hiroyasu Ehara v Keigo Shimizu | 6-1,6-0 |