Stadium: Court 10 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2023/09/04 01:00 | Koki Matsuda v Ko Suzuki | 6-1,4-6,7-10 |
| ITF M15 Tsukuba | 2024/03/24 01:00 | Ray Ho v Ko Suzuki | 6-1,6-1 |
| ITF M15 Nishi-Tokyo | 2024/03/19 01:00 | Linang Xiao v Ko Suzuki | 6-4,6-2 |
| ITF M15 Nishi-Tokyo | 2024/03/18 01:00 | Ko Suzuki v Keisuke Saitoh | 6-3,6-3 |
| ITF M15 Hinode | 2024/03/11 01:00 | Yuta Kikuchi v Ko Suzuki | 6-1,7-5 |
| ITF M15 Yanagawa | 2023/12/28 02:40 | Ko Suzuki v Duckhee Lee | 1-6,2-6 |
| ITF M15 Yanagawa | 2023/12/27 02:10 | Kenta Miyoshi v Ko Suzuki | 6-7,3-6 |
| ITF M15 Yanagawa | 2023/12/26 00:30 | Ko Suzuki v Taketo Takamisawa | 6-1,5-7,10-8 |
| ITF M15 Yanagawa | 2023/12/21 00:30 | Sanhui Shin v Ko Suzuki | 6-1,6-4 |
| ITF M15 Tsukuba | 2024/03/25 06:00 | Ryotaro Taguchi v Koki Matsuda | 7-6,6-2 |
| ITF M15 Tsukuba | 2024/03/24 01:00 | Seon Yong Han v Koki Matsuda | 4-6,4-6 |
| ITF M15 Nishi-Tokyo | 2024/03/20 06:50 | Koki Matsuda v Stefanos Sakellaridis | 7-5,6-7,4-6 |
| ITF M15 Nishi-Tokyo | 2024/03/18 01:00 | Nico Hornitschek v Koki Matsuda | 2-6,3-6 |
| ITF M15 Hinode | 2024/03/13 02:00 | Linang Xiao v Koki Matsuda | 6-3,6-7,7-6 |
| ITF M15 Hinode | 2024/03/11 04:30 | Koki Matsuda v Issei Okamura | 6-4,6-3 |
| UTR Pro Kawaguchi | 2024/03/03 02:00 | Koki Matsuda v Tomohiro Masabayashi | 6-1,1-6,3-6 |
| ITF M15 Yanagawa | 2023/12/27 02:15 | Koki Matsuda v Sora Fukuda | 2-6,6-1,2-6 |