Stadion: Court 10 Round: 25 Ground: Hardcourt outdoor
| ITF - M25 - Kashiwa | 2023/04/03 04:00 | Ryotaro Taguchi v Asahi Harazaki | 6-4,7-6 |
| ITF - M25 - Kashiwa | 2023/04/02 04:00 | Maximus Jones v Ryotaro Taguchi | 6-7,5-7 |
| ITF - M25 - Tsukuba | 2023/03/30 00:55 | Yu Hsiou Hsu v Ryotaro Taguchi | 6-1,6-4 |
| ITF - M25 - Tsukuba | 2023/03/29 00:30 | Koki Matsuda v Ryotaro Taguchi | 6-3,2-6,2-6 |
| ITF - M25 - Tsukuba | 2023/03/27 05:00 | Ryotaro Taguchi v Issei Okamura | 7-5,6-2 |
| ITF - M25 - Tsukuba | 2023/03/27 00:30 | Maximus Jones v Ryotaro Taguchi | 4-6,0-6 |
| ITF - M25 - Monastir | 2023/02/20 14:30 | Mischa Zverev v Ryotaro Taguchi | 6-2,6-1 |
| ITF - M25 - Monastir | 2023/02/20 10:10 | Ryotaro Taguchi v Marc Antoine Gaillard | 6-1,6-3 |
| ITF - M25 - Tsukuba | 2023/03/30 02:50 | Hiroki Moriya v Daisuke Sumizawa | 7-5,6-1 |
| ITF - M25 - Tsukuba | 2023/03/29 03:30 | Daisuke Sumizawa v Makoto Ochi | 1-6,7-5,6-4 |
| ITF - M25 - Canberra | 2023/03/21 02:50 | Jordan Smith v Daisuke Sumizawa | 6-4,7-6 |
| ITF - M25 - Canberra | 2023/03/14 00:20 | Dane Sweeny v Daisuke Sumizawa | 7-6,6-4 |
| ITF - M25 - Burnie | 2023/02/08 05:20 | Daisuke Sumizawa v Luke Saville | 3-6,4-6 |
| Challenger - Burnie | 2023/01/31 01:40 | Daisuke Sumizawa v Hiroki Moriya | 3-6,3-6 |
| Challenger - Burnie | 2023/01/30 00:50 | Daisuke Sumizawa v Derek Pham | 6-4,3-6,6-3 |
| Challenger - Burnie | 2023/01/29 03:55 | Daisuke Sumizawa v Zak Talic | 6-2,6-4 |