Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF Japan F3 | 2017/03/22 04:45 | Jumpei Yamasaki v Jeamoon Lee | 6-7,3-6 |
| ITF Japan F2 | 2017/03/14 02:30 | Jumpei Yamasaki v Jeamoon Lee | 1-6,3-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/20 04:00 | Yamato Sueoka v Jeamoon Lee | 1-6,6-3,3-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/19 03:40 | Kokoro Isomura v Jeamoon Lee | 3-6,4-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/16 02:00 | Taisei Ichikawa v Jeamoon Lee | 4-6,1-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/15 02:00 | Kasidit Samrej v Jeamoon Lee | 6-7,5-7 |
| ITF M15 Nakhon Si Thammarat | 2023/07/14 02:00 | Ryuki Matsuda v Jeamoon Lee | 3-6,3-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/13 05:00 | Palaphoom Kovapitukted v Jeamoon Lee | 4-6,6-3,6-7 |
| ITF M15 Nakhon Si Thammarat | 2023/07/06 03:00 | Kasidit Samrej v Jeamoon Lee | 7-6,7-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/04 02:00 | Chanon Phunsawat v Jeamoon Lee | 2-6,1-6 |
| ITF M25 Daegu | 2023/06/09 02:55 | Jumpei Yamasaki v Dominik Palan | 4-6,2-6 |
| ITF M25 Daegu | 2023/06/06 03:10 | Duckhee Lee v Jumpei Yamasaki | 1-6,6-4,4-6 |
| ITF M15 Karuizawa | 2023/06/03 03:30 | Sanhui Shin v Jumpei Yamasaki | 6-3,7-6 |
| ITF M15 Karuizawa | 2023/06/01 02:40 | Jumpei Yamasaki v Takuya Kumasaka | 6-3,6-2 |
| ITF M15 Karuizawa | 2023/05/31 01:00 | Jumpei Yamasaki v Seita Watanabe | 6-4,6-4 |
| ITF M15 Karuizawa | 2023/05/30 02:00 | Jumpei Yamasaki v Daiki Yoshimura | 6-2,6-2 |
| ITF M15 Heraklion | 2022/10/14 08:50 | Simone Roncalli v Jumpei Yamasaki | 6-4,6-3 |
| ITF M15 Heraklion | 2022/10/13 08:40 | Thantub Suksumrarn v Jumpei Yamasaki | 6-7,2-6 |