Stadium: Court 7 Round: 26 Ground: Hardcourt outdoor
| ITF - Sapporo M25 | 2023/09/06 03:05 | Ko Suzuki v Woobin Shin | 6-1,6-4 |
| ITF - Sapporo M25 | 2023/09/04 01:00 | Koki Matsuda v Ko Suzuki | 6-1,4-6,7-10 |
| ITF - Tainan M25 | 2023/08/20 02:00 | Ko Suzuki v Kai-I Wang | 1-6,6-0,4-10 |
| ITF - Tainan M25 | 2023/08/15 03:55 | Lucio Carnevalle v Ko Suzuki | 3-6,6-2,6-2 |
| ITF - Tainan M25 | 2023/08/14 02:00 | Ko Suzuki v Tzu Li Chang | 6-2,6-3 |
| ITF - Tainan M25 | 2023/08/13 02:00 | Ko Suzuki v Jeffrey Hsu | 6-3,6-2 |
| ITF - Anseong M25 | 2023/06/21 04:10 | Daisuke Sumizawa v Ko Suzuki | 7-5,6-3 |
| ITF - Anseong M25 | 2023/06/19 05:40 | Ko Suzuki v Hayeon Seong | 6-4,6-4 |
| ITF - Sapporo M25 | 2023/09/05 04:55 | Hikaru Shiraishi v Ryotaro Taguchi | 4-6,6-4,0-6 |
| ITF - Sapporo M25 | 2023/09/04 03:20 | Ryotaro Taguchi v Naoya Honda | 6-0,0-6,4-10 |
| ITF - Sapporo M25 | 2023/09/03 01:00 | Ryotaro Taguchi v Camden Camacho | 6-1,6-2 |
| ITF - Nakhon Si Thammarat M15 | 2023/08/28 07:10 | Ryotaro Taguchi v Seon Yong Han | 4-6,3-6 |
| ITF - Nakhon Si Thammarat M15 - Kwalifikacje | 2023/08/27 10:00 | Ryotaro Taguchi v Songrit D Chanbubpha | 6-0,6-0 |
| ITF - Nakhon Si Thammarat M15 | 2023/08/24 02:00 | Khumoyun Sultanov v Ryotaro Taguchi | 6-3,6-4 |
| ITF - Nakhon Si Thammarat M15 | 2023/08/23 03:50 | Ryotaro Taguchi v Francois Musitelli | 6-4,6-4 |
| ITF - Nakhon Si Thammarat M15 | 2023/08/21 05:25 | Ryotaro Taguchi v Chanon Phunsawat | 6-3,6-3 |