Stadium: Court 1 Round: 14 Ground: Hardcourt outdoor
| Challenger Nonthaburi | 2023/01/02 03:00 | Alafia Ayeni v Ji Sung Nam | 6-3,6-4 |
| Challenger Nonthaburi | 2023/01/01 03:00 | Ji Sung Nam v Oleksandr Ovcharenko | 6-3,6-1 |
| Challenger Kobe | 2022/11/13 06:30 | Renta Tokuda v Ji Sung Nam | 6-4,6-1 |
| Challenger Matsuyama | 2022/11/07 03:45 | Jason Jung v Ji Sung Nam | 6-3,6-4 |
| Challenger Matsuyama | 2022/11/06 04:20 | Jonathan Mridha v Ji Sung Nam | 6-7,3-6 |
| Challenger Yokohama | 2022/10/30 02:45 | Ji Sung Nam v Taisei Ichikawa | 6-7,5-7 |
| 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 Nonthaburi | 2023/01/10 03:00 | Giovanni Fonio v Arthur Cazaux | 4-6,4-6 |
| Challenger Nonthaburi | 2023/01/09 03:00 | Yuta Shimizu v Giovanni Fonio | 6-4,2-6,5-7 |
| Challenger Nonthaburi | 2023/01/08 03:00 | Giovanni Fonio v Akira Santillan | 5-7,6-3,6-3 |
| Challenger Nonthaburi | 2023/01/04 04:30 | Giovanni Fonio v Dennis Novak | 2-6,1-6 |
| Challenger Nonthaburi | 2023/01/03 05:10 | Giovanni Fonio v Thiago Agustin Tirante | 5-7,7-6,7-6 |
| Challenger Nonthaburi | 2023/01/02 04:35 | Stuart Parker v Giovanni Fonio | 1-6,4-6 |
| Challenger Nonthaburi | 2023/01/01 08:45 | Omni Kumar v Giovanni Fonio | 5-7,2-6 |
| Challenger Maspalomas | 2022/11/28 11:10 | Giovanni Fonio v Imanol L Morillo | 6-7,5-7 |