Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Takasaki | 2023/09/18 01:00 | Ryotaro Taguchi v Ko Suzuki | 6-2,7-5 |
| ITF M25 Sapporo | 2023/09/13 01:00 | Hayato Matsuoka v Ryotaro Taguchi | 6-2,3-6,6-3 |
| ITF M25 Sapporo | 2023/09/11 00:50 | Ryotaro Taguchi v Shunsuke Nakagawa | 6-2,6-2 |
| ITF M25 Sapporo | 2023/09/07 02:50 | Ko Suzuki v Ryotaro Taguchi | 6-4,6-3 |
| ITF M25 Sapporo | 2023/09/05 04:55 | Hikaru Shiraishi v Ryotaro Taguchi | 4-6,6-4,0-6 |
| ITF M25 Sapporo | 2023/09/04 03:20 | Ryotaro Taguchi v Naoya Honda | 6-0,0-6,4-10 |
| ITF M25 Sapporo | 2023/09/03 01:00 | Ryotaro Taguchi v Camden Camacho | 6-1,6-2 |
| ITF M15 Nakhon Si Thammarat | 2023/08/28 07:10 | Ryotaro Taguchi v Seon Yong Han | 4-6,3-6 |
| ITF M25 Hong Kong | 2023/09/06 02:00 | Egor Gerasimov v Makoto Ochi | 3-6,6-3,6-3 |
| ITF M25 Hong Kong | 2023/08/30 07:05 | Makoto Ochi v Ajeet Rai | 6-2,2-6,5-7 |
| ITF M25 Tainan | 2023/08/20 02:00 | Ergi Kirkin v Makoto Ochi | 6-0,6-2 |
| ITF M25 Tainan | 2023/08/19 02:00 | Makoto Ochi v Kazuki Nishiwaki | 6-2,7-6 |
| ITF M25 Tainan | 2023/08/18 01:55 | Alexander Chepik v Makoto Ochi | 3-6,1-6 |
| ITF M25 Tainan | 2023/08/17 02:00 | Tomohiro Masabayashi v Makoto Ochi | 6-7,1-6 |
| ITF M25 Tainan | 2023/08/15 04:45 | Koki Matsuda v Makoto Ochi | 3-6,7-5,4-6 |
| Challenger Lexington | 2023/07/31 15:40 | Yuki Mochizuki v Makoto Ochi | 6-4,6-2 |