stadio: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Mildura | 2024/03/12 02:05 | Alex Bolt v Ji Sung Nam | 7-6,6-2 |
| Challenger Yokkaichi | 2023/11/28 02:45 | Kaichi Uchida v Ji Sung Nam | 7-6,2-6,6-1 |
| Challenger Yokkaichi | 2023/11/27 02:15 | Ji Sung Nam v Calum Puttergill | 4-6,6-1,6-0 |
| Challenger Yokkaichi | 2023/11/26 04:10 | Fajing Sun v Ji Sung Nam | 3-6,2-6 |
| Challenger Sydney | 2023/11/03 00:00 | Ji Sung Nam v Rinky Hijikata | 7-6,5-7,6-7 |
| Challenger Sydney | 2023/11/01 23:00 | Ji Sung Nam v Dane Sweeny | 6-4,6-2 |
| Challenger Sydney | 2023/10/30 23:00 | Tristan Schoolkate v Ji Sung Nam | 6-7,4-6 |
| Challenger Sydney | 2023/10/29 23:00 | Yusuke Takahashi v Ji Sung Nam | 3-6,1-6 |
| ITF M15 Tsukuba | 2024/03/28 01:30 | Yunseong Chung v Takuya Kumasaka | 7-6,1-6,6-4 |
| ITF M15 Tsukuba | 2024/03/27 05:05 | Jimmy Yang v Takuya Kumasaka | 2-6,4-6 |
| ITF M15 Nishi-Tokyo | 2024/03/20 07:55 | Linang Xiao v Takuya Kumasaka | 7-6,7-6 |
| ITF M15 Hinode | 2024/03/14 01:00 | Takuya Kumasaka v Yuki Mochizuki | 2-6,2-6 |
| ITF M15 Hinode | 2024/03/12 01:00 | Leo Vithoontien v Takuya Kumasaka | 2-6,6-4,4-6 |
| UTR Pro Kawaguchi | 2024/03/02 03:00 | Takuya Kumasaka v Kazuma Kawachi | 4-5 |
| Challenger Burnie | 2024/02/06 02:40 | Yasutaka Uchiyama v Takuya Kumasaka | 6-0,6-2 |
| Challenger Burnie | 2024/02/05 00:35 | Takuya Kumasaka v Alexander Klintcharov | 6-2,6-2 |