Stadium: Court 15 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Changwon | 2023/06/12 07:15 | Young Seok Lee v Jung-Woong Na | 4-6,3-6 |
| ITF M25 Changwon | 2023/06/11 08:00 | Young Seok Lee v Junsu Kang | 2-6,6-1,10-5 |
| ITF M25 Daegu | 2023/06/04 01:00 | Dong Ju Kim v Young Seok Lee | 6-2,3-6,10-7 |
| ITF M15 Daegu | 2022/08/29 00:30 | Tae-Woo Lee v Young Seok Lee | 1-6,7-6,10-6 |
| ITF M15 Daegu | 2022/08/28 01:00 | Young Seok Lee v TaeWoo Koo | 6-2,6-3 |
| ITF M15 Monastir | 2021/12/13 09:00 | Charlelie Cosnet v Young Seok Lee | 6-4,6-3 |
| ITF M15 Monastir | 2021/12/12 12:00 | Thomas George Brun v Young Seok Lee | 3-6,2-6 |
| ITF M15 Changwon | 2019/10/16 00:55 | Young Seok Lee v Jung-Woong Na | 2-6,1-6 |
| ITF M15 Monastir | 2024/01/28 08:30 | Junhyun Lee v Igor Kudriashov | 2-6,7-6,12-14 |
| ITF M15 Kuala Lumpur | 2023/11/27 02:30 | Junhyun Lee v Shaoyun Liu | 3-6,4-6 |
| ITF M15 Kuala Lumpur | 2023/11/26 01:30 | Ke Hau Hung v Junhyun Lee | 6-3,4-6,8-10 |
| ITF M15 Ipoh Perak | 2023/11/20 01:30 | Junhyun Lee v Ryota Tanuma | 2-6,2-6 |
| ITF M15 Ipoh Perak | 2023/11/19 02:00 | Ying-Ze Chen v Junhyun Lee | 3-6,5-7 |
| ITF M15 Kuching | 2023/11/13 03:00 | Mattias Southcombe v Junhyun Lee | 2-6,6-2,10-7 |
| ITF M15 Nakhon Si Thammarat | 2023/09/06 02:00 | Junhyun Lee v Maximus Jones | 3-6,3-6 |
| ITF M15 Nakhon Si Thammarat | 2023/09/04 03:35 | Junhyun Lee v Suphawat Saeoui | 6-3,6-2 |