Stadium: Court 4 Round: 14 Ground: Hardcourt outdoor
| ITF - M15 Nonthaburi | 2019/11/26 07:20 | Taisei Ichikawa v Ji Sung Nam | 5-7,2-6 |
| Challenger - Busan | 2022/10/19 02:00 | Ji Sung Nam v Christopher O'Connell | 3-6,2-6 |
| Challenger - Busan | 2022/10/18 01:30 | Kaichi Uchida v Ji Sung Nam | 3-6,3-6 |
| Challenger - Gwangju | 2022/10/07 02:00 | Emilio Gomez v Ji Sung Nam | 6-1,1-6,6-1 |
| Challenger - Gwangju | 2022/10/05 02:00 | Ji Sung Nam v Yibing Wu | 6-4,6-2 |
| Challenger - Gwangju | 2022/10/04 05:30 | Yunseong Chung v Ji Sung Nam | 6-1,3-6,5-7 |
| Challenger - Gwangju | 2022/10/03 02:00 | Ji Sung Nam v Shinji Hazawa | 6-1,7-6 |
| Challenger - Gwangju | 2022/10/02 01:00 | Ji Sung Nam v Hoyoung Roh | 6-2,6-1 |
| ATP - Seoul | 2022/09/27 03:00 | Steve Johnson v Ji Sung Nam | 7-6,6-4 |
| ITF - M25 Kashiwa | 2022/09/27 01:00 | Taisei Ichikawa v Shintaro Imai | 6-7,6-4,2-6 |
| ITF - M25 Sapporo | 2022/09/07 02:40 | Ryota Tanuma v Taisei Ichikawa | 6-0,6-0 |
| ITF - M25 Sapporo | 2022/09/01 01:00 | Yuki Mochizuki v Taisei Ichikawa | 6-0,6-7,6-2 |
| ITF - M15 Cancun | 2022/08/25 13:30 | Taisei Ichikawa v Alejandro H Franco | 6-7,6-1,3-6 |
| ITF - M15 Cancun | 2022/08/16 14:00 | Taisei Ichikawa v Marco Brugnerotto | 5-7,6-2,5-7 |
| ITF - M15 Cancun | 2022/08/11 16:30 | Jaimee Floyd Angele v Taisei Ichikawa | 6-1,4-6,6-3 |
| ITF - M15 Cancun | 2022/08/10 14:00 | Arman Zamani v Taisei Ichikawa | 0-6,1-6 |
| ITF - M25 Decatur | 2022/08/04 02:00 | Taisei Ichikawa v Karlis Ozolins | 5-7,5-7 |