Stadium: Court 2 Round: 19 Ground: Hardcourt outdoor
| ITF - Sapporo M25 | 2023/09/07 02:50 | Ko Suzuki v Ryotaro Taguchi | 6-4,6-3 |
| ITF - Sapporo M25 | 2023/09/13 01:00 | Hayato Matsuoka v Ryotaro Taguchi | 6-2,3-6,6-3 |
| ITF - Sapporo M25 | 2023/09/11 00:50 | Ryotaro Taguchi v Shunsuke Nakagawa | 6-2,6-2 |
| ITF - Sapporo M25 | 2023/09/07 02:50 | Ko Suzuki v Ryotaro Taguchi | 6-4,6-3 |
| 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 - Takasaki M25 | 2023/09/17 01:00 | Mao Takada v Ko Suzuki | 3-6,4-6 |
| ITF - Sapporo M25 | 2023/09/11 00:55 | Naoki Tajima v Ko Suzuki | 7-6,4-6,10-8 |
| ITF - Sapporo M25 | 2023/09/10 01:00 | Mao Takada v Ko Suzuki | 1-6,3-6 |
| ITF - Sapporo M25 | 2023/09/08 04:45 | Daisuke Sumizawa v Ko Suzuki | 7-5,6-2 |
| ITF - Sapporo M25 | 2023/09/07 02:50 | Ko Suzuki v Ryotaro Taguchi | 6-4,6-3 |
| 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 |