Estadio: Court 2 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Nishi-Tama | 2019/03/08 06:25 | Hiroyasu Ehara v Ji Sung Nam | 4-6,2-6 |
| 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 15 Antalya | 2019/01/17 11:30 | Alexander Shevchenko v Hiroyasu Ehara | 6-3,6-1 |
| ITF 15 Antalya | 2019/01/17 07:00 | Matej Sabanov v Hiroyasu Ehara | 4-6,7-6,4-6 |
| Challenger de Kobe | 2018/11/13 04:30 | Tung-Lin Wu v Hiroyasu Ehara | 6-3,6-2 |
| ITF Tailandia F8 | 2018/11/06 08:35 | Hiroyasu Ehara v Antoine Bellier | 4-6,4-6 |
| ITF M15 Nishi-Tokyo | 2019/03/14 01:00 | Min-Kyu Song v Ji Sung Nam | 4-6,3-6 |
| ITF M15 Nishi-Tokyo | 2019/03/13 03:50 | Yunosuke Tanaka v Ji Sung Nam | 6-4,1-6,5-7 |
| ITF M15 Nishi-Tama | 2019/03/10 01:00 | Shintaro Imai v Ji Sung Nam | 6-2,6-2 |
| ITF M15 Nishi-Tama | 2019/03/09 01:00 | Jumpei Yamasaki v Ji Sung Nam | 2-6,1-6 |
| ITF M15 Nishi-Tama | 2019/03/08 06:25 | Hiroyasu Ehara v Ji Sung Nam | 4-6,2-6 |
| ITF M15 Nishi-Tama | 2019/03/06 04:00 | Takuto Niki v Ji Sung Nam | 4-6,2-6 |
| Challenger de Da Nang | 2019/01/06 08:35 | Ji Sung Nam v N.Sriram Balaji | 6-7,6-7 |
| Challenger de Kobe | 2018/11/12 06:35 | Nam Hoang Ly v Ji Sung Nam | 6-7,7-6,6-2 |