Stadium: Pista 3 Round: 14 Ground: Hardcourt outdoor
| Challenger - Bloomfield Hills | 2023/07/03 14:30 | Evan Zhu v Ji Sung Nam | 6-1,6-4 |
| Challenger - Cali | 2023/06/18 19:15 | Frazier Rengifo v Ji Sung Nam | 6-4,6-2 |
| Challenger - Palmas del Mar | 2023/06/11 17:15 | Ji Sung Nam v Gustavo Heide | 4-6,4-6 |
| Challenger - Busan | 2023/05/09 02:00 | Ji Sung Nam v Gabriel Diallo | 3-6,3-6 |
| Challenger - Gwangju | 2023/05/01 01:30 | Dominik Palan v Ji Sung Nam | 6-4,6-3 |
| Challenger - Gwangju | 2023/04/30 01:30 | Ji Sung Nam v Ajeet Rai | 5-7,6-1,6-2 |
| Challenger - Soul | 2023/04/26 02:00 | Max Purcell v Ji Sung Nam | 6-3,6-4 |
| Challenger - Soul | 2023/04/24 02:00 | Ji Sung Nam v Shinji Hazawa | 6-2,6-4 |
| ITF - M25 Roda de Bara | 2023/07/14 09:30 | Fajing Sun v Alex Martinez | 4-6,5-7 |
| ITF - M25 Roda de Bara | 2023/07/13 08:30 | Fajing Sun v Pedro Vives Marcos | 6-1,6-2 |
| ITF - M25 Roda de Bara | 2023/07/11 16:45 | Antoine Hoang v Fajing Sun | 1-6,3-6 |
| ITF - M25 Bakio | 2023/06/26 18:00 | John Echeverria v Fajing Sun | 6-2,6-2 |
| ITF - M25 Mungia | 2023/06/21 12:25 | Fajing Sun v Henrique Rocha | 6-3,4-6,4-6 |
| ITF - M25 Mungia | 2023/06/20 14:30 | Fajing Sun v Antonio Prat | 6-4,6-4 |
| ITF - M25 Martos | 2023/06/18 10:00 | Fajing Sun v Pedro Vives Marcos | 7-6,6-4 |
| ITF - M25 Martos | 2023/06/17 15:30 | Fajing Sun v Stefanos Sakellaridis | 6-4,6-7,6-3 |