Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/09 02:00 | Wishaya Trongcharoenchaikul v Ehara, Hiroyasu | 7-6,6-7,7-5 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/08 04:20 | Wang, Chukang v Ehara, Hiroyasu | 0-6,4-6 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/10 03:30 | Wishaya Trongcharoenchaikul v Ehara, Hiroyasu | 3-6,7-6,6-4 |
| ITF - M15 Kashiwa | 2019/04/01 03:00 | Ehara, Hiroyasu v Sho Shimabukuro | 4-6,4-6 |
| ITF - M15 Kashiwa | 2019/04/01 00:00 | Ehara, Hiroyasu v Congsup Congcar | 6-1,6-1 |
| Kofu, Qualifications Simples M-ITF-JPN-03A | 2019/03/22 02:05 | Niki, Takuto v Ehara, Hiroyasu | 6-3,6-4 |
| Kofu, Qualifications Simples M-ITF-JPN-03A | 2019/03/21 02:00 | Ehara, Hiroyasu v Tamaki Yamao | 6-3,4-6,6-0 |
| Kofu, Qualifications Simples M-ITF-JPN-03A | 2019/03/19 02:05 | Shohei Chikami v Ehara, Hiroyasu | 4-6,1-6 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/07 04:00 | Issei Okamura v Tsung-Hao Huang | 3-6,6-1,8-10 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/06 02:00 | Issei Okamura v Bingyu Yu | 6-1,6-2 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/12 02:25 | Issei Okamura v Sekiguchi, Shuichi | 1-6,0-6 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/10 07:00 | Jumpei Yamasaki v Issei Okamura | 6-4,5-7,1-6 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/09 02:40 | Issei Okamura v Iino, Shota | 6-2,6-2 |
| ITF - M15 Kashiwa | 2019/04/04 01:00 | Issei Okamura v Jumpei Yamasaki | 3-6,2-6 |
| ITF - M15 Kashiwa | 2019/04/02 05:50 | Taisei Ichikawa v Issei Okamura | 7-5,5-7,5-7 |
| ITF - M15 Tsukuba | 2019/03/27 03:25 | Issei Okamura v Naoki Tajima | 3-6,4-6 |