Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Tsukuba | 2023/03/27 04:00 | Koki Matsuda v Asahi Harazaki | 7-6,6-7,10-8 |
| ITF M25 Tsukuba | 2023/03/27 00:30 | Koki Matsuda v Taki Adachi | 6-3,6-1 |
| UTR Pro Tennis Series Miki | 2022/12/10 03:57 | Koki Matsuda v Kazuki Nishiwaki | 3-6,0-0 |
| UTR Pro Tennis Series Miki | 2022/12/08 00:30 | Kento Tagashira v Koki Matsuda | 4-6,4-6 |
| UTR Pro Tennis Series Miki | 2022/12/05 02:00 | Ying-Ze Chen v Koki Matsuda | 2-6,2-5 |
| Challenger Yokkaichi | 2022/11/21 01:00 | Colin Sinclair v Koki Matsuda | 6-3,6-4 |
| Challenger Yokkaichi | 2022/11/20 02:20 | Koki Matsuda v Arjun Kadhe | 7-5,6-7,6-2 |
| Challenger Matsuyama | 2022/11/09 01:00 | Koki Matsuda v Nam Hoang Ly | 4-6,3-6 |
| 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 |
| UTR Pro Miki | 2023/02/11 00:30 | Yuta Kawahashi v Ryotaro Taguchi | 6-0,6-4 |
| UTR Pro Miki | 2023/02/10 05:30 | Ryohei Takase v Ryotaro Taguchi | 1-6,7-5,1-6 |
| UTR Pro Miki | 2023/02/09 03:30 | Ren Nakamura v Ryotaro Taguchi | 4-6,5-7 |
| UTR Pro Miki | 2023/02/06 03:30 | Ryotaro Taguchi v Seita Watanabe | 6-2,6-7,7-6 |