Stadium: Center Court Round: 62 Ground: Hardcourt outdoor
| ITF M15 Anseong | 2022/08/17 05:40 | Hayeon Seong v Yuta Kawahashi | 0-6,1-6 |
| ITF M15 Anseong | 2022/08/15 07:15 | Hayeon Seong v Dogeon Park | 6-3,6-1 |
| ITF M15 Anseong | 2022/08/15 03:20 | Geni Inoue v Hayeon Seong | 3-6,5-7 |
| ITF M15 Changwon | 2019/10/15 01:00 | Takuya Kumasaka v Hayeon Seong | 4-6,6-2,10-1 |
| ITF M15 Anseong | 2019/06/26 04:00 | Hayeon Seong v Haru Inoue | 2-6,2-6 |
| ITF M15 Anseong | 2019/06/25 01:00 | Hayeon Seong v Sam Ryan Ziegann | 7-5,6-1 |
| ITF M15 Anseong | 2019/06/24 02:00 | David Barclay v Hayeon Seong | 7-5,6-7,8-10 |
| ITF M15 Gimcheon | 2019/06/20 01:00 | Ryota Tanuma v Yong-Kyu Lim | 3-6,7-6,6-4 |
| ITF M15 Gimcheon | 2019/06/18 05:45 | Uisung Park v Yong-Kyu Lim | 1-6,2-6 |
| ITF M15 Gimcheon | 2019/06/15 02:00 | Yuta Shimizu v Yong-Kyu Lim | 3-6,6-3,6-4 |
| ITF M15 Gimcheon | 2019/06/12 04:40 | Yong-Kyu Lim v Suk Hyun Choo | 6-2,6-0 |
| ITF M15 Daegu | 2019/06/04 04:50 | Jung-Woong Na v Yong-Kyu Lim | 6-2,6-3 |
| Davis Cup | 2018/09/15 05:35 | Yong-Kyu Lim v Michael Venus | 7-6,6-4 |
| ITF Korea F1 | 2018/06/10 03:00 | Yong-Kyu Lim v Jeamoon Lee | 6-4,7-6 |
| ITF Korea F1 | 2018/06/09 01:00 | Cheong-Eui Kim v Yong-Kyu Lim | 2-6,3-6 |