Stadium: Court 2 Round: 28 Ground: Hardcourt outdoor
| 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 USA F26 | 2018/09/30 18:00 | Michael Shabaz v Takuto Niki | 3-6,6-3,3-6 |
| ITF USA F26 | 2018/09/29 18:00 | Takuto Niki v Strong Kirchheimer | 3-6,6-1,6-3 |
| ITF USA F26 | 2018/09/28 17:00 | Alan Kohen v Takuto Niki | 6-7,4-6 |
| ITF M15 Nishi-Tokyo | 2019/03/15 01:00 | Shuichi Sekiguchi v Shintaro Imai | 6-3,6-0 |
| ITF M15 Nishi-Tokyo | 2019/03/14 03:45 | Shuichi Sekiguchi v Yuki Mochizuki | 6-2,6-1 |
| ITF M15 Nishi-Tokyo | 2019/03/13 01:00 | Shuichi Sekiguchi v Keisuke Saitoh | 6-3,6-2 |
| ITF M25 Mildura | 2019/03/09 01:00 | Shuichi Sekiguchi v Brydan Klein | 7-6,1-6,1-6 |
| ITF M25 Mildura | 2019/03/08 02:40 | Yuta Shimizu v Shuichi Sekiguchi | 3-6,3-6 |
| ITF M25 Mildura | 2019/03/07 02:00 | Issei Okamura v Shuichi Sekiguchi | 3-6,6-3,2-6 |
| ITF M25 Mildura | 2019/03/05 01:30 | Alexis Canter v Shuichi Sekiguchi | 6-7,1-6 |
| ITF M25 Albury | 2019/03/02 00:00 | Brydan Klein v Shuichi Sekiguchi | 6-3,6-2 |