Stadium: Court 2 Round: 26 Ground: Hardcourt outdoor
| ITF Japan F3 | 2018/03/19 01:00 | Tamaki Yamao v Hiroyasu Ehara | 6-2,3-6,0-6 |
| 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 |
| ITF M15 Antalya | 2019/01/17 11:30 | Alexander Shevchenko v Hiroyasu Ehara | 6-3,6-1 |
| ITF M15 Kofu | 2019/03/20 01:00 | Tamaki Yamao v Michael Look | 6-2,6-3 |
| ITF M15 Kofu | 2019/03/18 06:30 | Tamaki Yamao v Pak Long Yeung | 6-3,6-7,10-6 |
| ITF M15 Kofu | 2019/03/18 03:00 | Yuichi Ito v Tamaki Yamao | 2-6,3-6 |
| ITF M15 Antalya | 2019/02/11 07:00 | Tamaki Yamao v Arklon H D Pino | 6-7,6-7 |
| Challenger Kobe | 2018/11/10 03:35 | Tamaki Yamao v Naoki Tajima | 4-6,5-7 |
| ITF Japan F6 Qual | 2018/04/07 01:00 | Tamaki Yamao v Kazuki Nishiwaki | 6-4,3-6,3-6 |
| ITF Japan F5 | 2018/03/31 00:30 | Yu Hsiang Chiu v Tamaki Yamao | 6-2,7-6 |
| ITF Japan F4 | 2018/03/29 03:45 | Sho Katayama v Tamaki Yamao | 6-4,6-4 |