Stadium: Center Court A Round: 27 Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2023/09/07 00:55 | Naoki Nakagawa v Shunsuke Wakita | 4-6,6-2,6-0 |
| ITF M25 Sapporo | 2023/09/06 01:00 | Naoki Nakagawa v Naoya Honda | 7-6,6-4 |
| ITF M25 Hong Kong | 2023/09/03 02:00 | Naoki Nakagawa v Adam Moundir | 2-6,6-4,6-10 |
| ITF M25 Hong Kong | 2023/08/31 02:00 | Naoki Nakagawa v Keisuke Saitoh | 6-4,6-7,6-1 |
| ITF M25 Hong Kong | 2023/08/30 03:50 | Naoki Nakagawa v Hong Kit Wong | 7-6,6-3 |
| ITF M25 Decatur | 2023/08/06 17:00 | Naoki Nakagawa v Cash Hanzlik | 6-4,1-6,4-6 |
| ITF M25 Decatur | 2023/08/05 15:25 | Naoki Nakagawa v Jonah Braswell | 6-2,4-6,6-1 |
| ITF M25 Decatur | 2023/08/04 14:00 | Naoki Nakagawa v Kareem Allaf | 7-6,6-3 |
| ITF M25 Sapporo | 2023/09/07 00:50 | Kokoro Isomura v Ryota Tanuma | 6-4,6-3 |
| ITF M25 Sapporo | 2023/09/05 02:00 | Kokoro Isomura v Daiki Yoshimura | 6-1,6-1 |
| ITF M25 Jakarta | 2023/08/17 03:50 | Kokoro Isomura v S D Prajwal Dev | 3-6,6-7 |
| ITF M25 Jakarta | 2023/08/16 02:30 | Kokoro Isomura v Rishi Reddy | 6-1,6-1 |
| ITF M25 Jakarta | 2023/08/10 02:30 | Leo Borg v Kokoro Isomura | 6-4,6-1 |
| ITF M25 Jakarta | 2023/08/09 04:00 | Kokoro Isomura v Shivank Bhatnagar | 6-3,6-1 |
| ITF M15 Nakhon Si Thammarat | 2023/07/19 03:40 | Kokoro Isomura v Jeamoon Lee | 3-6,4-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/12 03:10 | Kokoro Isomura v Patorn Hanchaikul | 0-6,0-6 |