Stadium: Court 1 Round: 14 Ground: Hardcourt indoor
| ITF M15 Nonthaburi | 2019/11/30 03:00 | Shintaro Imai v Ji Sung Nam | 7-6,7-6 |
| ITF M25 Nonthaburi | 2019/05/25 03:00 | Ji Sung Nam v Shintaro Imai | 6-4,7-5 |
| ITF M15 Nishi-Tama | 2019/03/10 01:00 | Shintaro Imai v Ji Sung Nam | 6-2,6-2 |
| Challenger Gwangju | 2024/04/17 02:00 | Alibek Kachmazov v Ji Sung Nam | 6-4,6-3 |
| Challenger Gwangju | 2024/04/16 02:00 | Ji Sung Nam v Otto Virtanen | 6-4,6-3 |
| Challenger Busan | 2024/04/08 04:30 | Philip Sekulic v Ji Sung Nam | 6-1,6-4 |
| ITF M15 Kashiwa | 2024/04/04 01:25 | Ji Sung Nam v Masamichi Imamura | 3-6,4-6 |
| ITF M15 Kashiwa | 2024/04/02 01:00 | Ji Sung Nam v Takuya Kumasaka | 7-6,3-6,6-4 |
| 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 |
| ITF M25 Nottingham | 2024/05/02 12:10 | Blake Mott v Shintaro Imai | 6-0,6-7,6-2 |
| ITF M25 Nottingham | 2024/05/01 09:00 | Daniel Little v Shintaro Imai | 4-6,4-6 |
| ITF M25 Nottingham | 2024/04/25 14:25 | Shintaro Imai v Blake Mott | 6-4,5-7,4-6 |
| ITF M25 Nottingham | 2024/04/24 09:00 | Martyn Pawelski v Shintaro Imai | 4-6,6-3,3-6 |
| ITF M15 Kashiwa | 2024/04/05 04:30 | Sora Fukuda v Shintaro Imai | 6-2,6-0 |
| ITF M15 Kashiwa | 2024/04/04 03:15 | Shintaro Imai v Leo Vithoontien | 6-3,6-3 |
| ITF M15 Kashiwa | 2024/04/02 06:00 | Kokoro Isomura v Shintaro Imai | 3-6,2-6 |
| ITF M25 Swan Hill | 2024/03/23 00:00 | Shintaro Imai v Rio Noguchi | 6-3,6-7,4-6 |