Stadium: Court 8 Round: 29 Ground: Hardcourt outdoor
| ITF M15 Nishi-Tama | 2019/03/06 04:00 | Takuto Niki v Ji Sung Nam | 4-6,2-6 |
| Challenger Da Nang | 2019/01/06 08:35 | Ji Sung Nam v N.Sriram Balaji | 6-7,6-7 |
| Challenger Kobe | 2018/11/12 06:35 | Nam Hoang Ly v Ji Sung Nam | 6-7,7-6,6-2 |
| Challenger Shenzhen 2 | 2018/10/28 02:30 | Yaraslav Shyla v Ji Sung Nam | 7-6,2-6,6-3 |
| Challenger Shenzhen 2 | 2018/10/27 02:00 | Yuanfeng Li v Ji Sung Nam | 4-6,1-6 |
| Challenger Liuzhou | 2018/10/20 04:30 | Yecong He v Ji Sung Nam | 2-6,6-3,6-2 |
| ITF Korea F5 | 2018/08/26 03:00 | Ji Sung Nam v Makoto Ochi | 6-4,6-1 |
| ITF Korea F5 | 2018/08/25 01:00 | Cheong-Eui Kim v Ji Sung Nam | 2-6,3-6 |
| ITF M25 Mildura | 2019/03/07 02:00 | Issei Okamura v Shuichi Sekiguchi | 3-6,6-3,2-6 |
| ITF M25 Mildura | 2019/03/05 01:30 | Alexis Canter v Shuichi Sekiguchi | 6-7,1-6 |
| ITF M25 Albury | 2019/03/02 00:00 | Brydan Klein v Shuichi Sekiguchi | 6-3,6-2 |
| ITF M25 Albury | 2019/02/28 23:30 | Shuichi Sekiguchi v Thomas Fancutt | 5-7,6-1,6-4 |
| ITF M25 Albury | 2019/02/28 01:20 | Shuichi Sekiguchi v Vincent Stouff | 4-6,6-1,6-2 |
| ITF M25 Albury | 2019/02/26 01:05 | Shuichi Sekiguchi v Alexis Canter | 6-2,6-1 |
| Challenger Da Nang | 2019/01/06 03:00 | Viktor Durasovic v Shuichi Sekiguchi | 6-3,6-2 |
| ITF M25 Hong Kong | 2019/01/02 02:55 | Shuichi Sekiguchi v Carlos Boluda-Purkiss | 5-7,4-6 |