Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Wuhan | 2019/05/09 02:00 | Wishaya Trongcharoenchaikul v Hiroyasu Ehara | 7-6,6-7,7-5 |
| ITF M25 Wuhan | 2019/05/08 04:20 | Chukang Wang v Hiroyasu Ehara | 0-6,4-6 |
| ITF M25 Matsuyama | 2019/04/10 03:30 | Wishaya Trongcharoenchaikul v Hiroyasu Ehara | 3-6,7-6,6-4 |
| ITF M15 Kashiwa | 2019/04/01 03:00 | Hiroyasu Ehara v Sho Shimabukuro | 4-6,4-6 |
| ITF M15 Kashiwa | 2019/04/01 00:00 | Hiroyasu Ehara v Congsup Congcar | 6-1,6-1 |
| ITF M15 Kofu | 2019/03/22 02:05 | Takuto Niki v Hiroyasu Ehara | 6-3,6-4 |
| 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 M25 Wuhan | 2019/05/07 04:00 | Issei Okamura v Tsung-Hao Huang | 3-6,6-1,8-10 |
| ITF M25 Wuhan | 2019/05/06 02:00 | Issei Okamura v Bingyu Yu | 6-1,6-2 |
| ITF M25 Matsuyama | 2019/04/12 02:25 | Issei Okamura v Shuichi Sekiguchi | 1-6,0-6 |
| ITF M25 Matsuyama | 2019/04/10 07:00 | Jumpei Yamasaki v Issei Okamura | 6-4,5-7,1-6 |
| ITF M25 Matsuyama | 2019/04/09 02:40 | Issei Okamura v Shota Iino | 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 |