Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Anseong | 2023/06/19 02:15 | Ko Suzuki v Min Seong Kim | 6-1,6-2 |
| ITF M25 Anseong | 2023/06/18 01:00 | Ko Suzuki v Ki Bum Kim | 6-2,6-4 |
| ITF M15 Karuizawa | 2023/06/01 00:30 | Kazuma Kawachi v Ko Suzuki | 6-2,1-6,7-5 |
| ITF M15 Karuizawa | 2023/05/31 01:00 | Ko Suzuki v Yamato Sueoka | 7-5,6-7,6-4 |
| ITF M15 Karuizawa | 2023/05/30 03:00 | Ko Suzuki v Yusuke Kusuhara | 7-6,4-6,10-8 |
| ITF M25 Kashiwa | 2023/04/02 00:30 | Ko Suzuki v Taiyo Yamanaka | 1-6,6-3,11-13 |
| ITF M25 Tsukuba | 2023/03/29 04:15 | Hiroki Moriya v Ko Suzuki | 6-3,6-1 |
| ITF M25 Tsukuba | 2023/03/27 05:30 | Ko Suzuki v Shunsuke Nakagawa | 6-2,6-4 |
| ITF M25 Anseong | 2023/06/18 01:00 | Victor Nasyrov v Hayeon Seong | 1-6,2-6 |
| ITF M25 Changwon | 2023/06/11 07:25 | Hayeon Seong v Woohyuk Sim | 6-2,0-6,4-10 |
| ITF M15 Sharm El Sheikh | 2022/12/12 10:30 | Hayeon Seong v Karim El Feky | 6-4,3-6,10-12 |
| ITF M15 Sharm El Sheikh | 2022/12/11 13:30 | Hayeon Seong v Moritz Schroeter | 4-6,6-3,10-7 |
| ITF M15 Sharm El Sheikh | 2022/12/06 10:05 | Matthew Summers v Hayeon Seong | 6-2,7-6 |
| ITF M15 Sharm El Sheikh | 2022/12/05 08:00 | Hayeon Seong v Akram El Sallaly | 2-6,6-1,10-7 |
| ITF M15 Sharm El Sheikh | 2022/12/04 12:00 | Hayeon Seong v Ighor Halmenschlager Reis | 6-2,6-3 |
| ITF M15 Sharm El Sheikh | 2022/11/27 13:30 | Hayeon Seong v Federico Lucini | 5-7,6-7 |