Ground: Hardcourt outdoor
| Challenger Playford | 2024/10/20 04:00 | Naoki Tajima v Yuki Mochizuki | 1-6,1-6 |
| ITF M25 Takasaki | 2024/09/16 03:20 | Naoki Tajima v Ryusuke Horiuchi | 2-6,5-7 |
| ITF M25 Takasaki | 2024/09/15 06:00 | Naoki Tajima v Jeffrey Fradkin | 6-2,6-3 |
| ITF M25 Sapporo | 2024/09/12 03:05 | Takuya Kumasaka v Naoki Tajima | 7-6,6-2 |
| ITF M25 Sapporo | 2024/09/10 02:30 | Taisei Ichikawa v Naoki Tajima | 6-3,2-6,1-6 |
| ITF M25 Aldershot | 2024/08/11 09:00 | Naoki Tajima v James Story | 4-6,3-6 |
| ITF M25 Roehampton | 2024/08/08 08:55 | Ryan Peniston v Naoki Tajima | 6-2,6-2 |
| ITF M25 Roehampton | 2024/08/06 16:30 | Louis Bowden v Naoki Tajima | 6-7,6-2,1-6 |
| Challenger Seoul | 2024/10/31 03:25 | Hyeon Chung v Li Tu | 6-4,3-6,1-6 |
| Challenger Seoul | 2024/10/29 03:25 | Yunseong Chung v Hyeon Chung | 5-7,3-6 |
| Challenger Taipei | 2024/10/21 10:10 | Hyeon Chung v Yasutaka Uchiyama | 0-6,3-6 |
| ITF M25 Takasaki | 2024/09/20 01:00 | Goncalo Oliveira v Hyeon Chung | 6-1,3-6,6-0 |
| ITF M25 Takasaki | 2024/09/19 04:40 | Hyeon Chung v Hikaru Shiraishi | 6-3,6-3 |
| ITF M25 Takasaki | 2024/09/18 05:15 | Hyeon Chung v Yamato Sueoka | 6-1,6-3 |
| ITF M25 Sapporo | 2024/09/03 03:00 | Hyeon Chung v Hiromasa Koyama | 5-7,1-6 |
| Wimbledon | 2023/06/26 14:00 | Dimitar Kuzmanov v Hyeon Chung | 2-6,6-3,3-6 |