Stadium: 12 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2022/09/08 01:00 | Ko Suzuki v Ryusuke Horiuchi | 2-6,6-3,3-6 |
| ITF M25 Sapporo | 2024/09/02 01:20 | Ko Suzuki v Yusuke Yoshikawa | 4-6,6-4,9-11 |
| ITF M25 Sapporo | 2024/09/01 01:00 | Ko Suzuki v Toki Adachi | 6-0,6-3 |
| ITF M15 Tokyo | 2024/07/08 01:00 | Reiya Komagata v Ko Suzuki | 3-6,6-4,10-8 |
| ITF M15 Tokyo | 2024/07/02 01:00 | Ko Suzuki v Yuta Kikuchi | 0-6,1-6 |
| ITF M15 Tokyo | 2024/07/01 03:30 | Ko Suzuki v Mao Takada | 6-2,6-0 |
| ITF M15 Hong Kong | 2024/06/20 03:50 | Ko Suzuki v Shintaro Imai | 4-6,3-6 |
| ITF M15 Hong Kong | 2024/06/18 07:30 | Kwok Shun Dasson Chan v Ko Suzuki | 0-6,0-6 |
| ITF M15 Hong Kong | 2024/06/12 02:00 | Ryota Tanuma v Ko Suzuki | 6-1,6-4 |
| ITF M25 Sapporo | 2024/09/01 01:00 | Jeffrey Fradkin v Ryusuke Horiuchi | 6-4,2-6,10-6 |
| ITF M15 Tokyo | 2024/07/08 03:30 | Woobin Shin v Ryusuke Horiuchi | 6-3,6-2 |
| ITF M15 Tokyo | 2024/07/01 01:00 | Ryusuke Horiuchi v Yuta Tomida | 3-6,4-6 |
| ITF M15 Hinode | 2024/03/10 03:00 | Ryusuke Horiuchi v Mattias Southcombe | 3-6,6-3,5-10 |
| ITF M15 Antalya | 2024/02/27 06:30 | Federico Campana v Ryusuke Horiuchi | 6-3,4-6,10-6 |
| ITF M15 Antalya | 2024/02/25 07:00 | Runze Yang v Ryusuke Horiuchi | 1-6,0-6 |
| ITF M25 Antalya | 2024/02/19 11:45 | Federico Bove v Ryusuke Horiuchi | 7-6,6-2 |
| ITF M25 Antalya | 2024/02/18 07:00 | Ryusuke Horiuchi v Gabriel Wien | 6-2,6-1 |