Round: 26 Ground: Hardcourt outdoor
| ITF M15 Tsukuba | 2019/03/26 01:00 | Ryohei Tagata v Yuta Kawahashi | 4-6,6-2,6-1 |
| ITF Giappone F4 | 2018/03/27 02:30 | Ryohei Tagata v Yuta Shimizu | 4-6,4-6 |
| ITF Giappone F3 | 2018/03/17 04:00 | Ryohei Tagata v Masaki Sasai | 5-7,6-3,2-6 |
| ITF Giappone F3 | 2018/03/17 00:30 | Ryohei Tagata v Takuya Kumasaka | 6-0,6-2 |
| ITF Giappone F4 | 2017/03/25 01:00 | Katsuki Nagao v Ryohei Tagata | 2-6,6-2,6-0 |
| ITF Giappone F3 | 2017/03/18 05:00 | Ryohei Tagata v Katsuki Nagao | 3-6,3-6 |
| ITF Giappone F1 | 2017/03/04 01:00 | Ryohei Tagata v Teppei Uesugi | 6-1,1-6,3-6 |
| ITF M15 Tsukuba | 2019/03/27 01:00 | Takuto Niki v Takashi Saito | 6-4,6-2 |
| ITF M15 Kofu | 2019/03/23 01:00 | Takuto Niki v Sho Shimabukuro | 5-7,3-6 |
| ITF M15 Kofu | 2019/03/22 02:05 | Takuto Niki v Hiroyasu Ehara | 6-3,6-4 |
| 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 |