Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Cairns | 2023/10/10 07:45 | Kokoro Isomura v Evans, Thomas | 6-0,6-2 |
| ITF M25 Cairns | 2023/10/04 03:00 | Kokoro Isomura v Beale, Jeremy | 4-6,0-6 |
| ITF M25 Darwin | 2023/09/20 05:30 | Kokoro Isomura v Scott Jones | 3-6,1-6 |
| ITF M25 Darwin | 2023/09/14 08:25 | Moerani Bouzige v Kokoro Isomura | 5-7,6-3,6-4 |
| ITF M25 Darwin | 2023/09/13 09:50 | Tai Leonard Sach v Kokoro Isomura | 4-6,2-6 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/08 01:00 | Naoki Nakagawa v Kokoro Isomura | 6-2,6-0 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/07 00:50 | Kokoro Isomura v Ryota Tanuma | 6-4,6-3 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/05 02:00 | Kokoro Isomura v Daiki Yoshimura | 6-1,6-1 |
| ITF M25 Cairns | 2023/10/10 07:15 | Tomislav E Papac v Sekiguchi, Shuichi | 4-6,3-6 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/16 05:30 | Sekiguchi, Shuichi v Kazuki Nishiwaki | 6-0,5-7,4-6 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/16 01:00 | Sekiguchi, Shuichi v Hikaru Shiraishi | 6-2,4-6,6-3 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/15 03:30 | Sekiguchi, Shuichi v Jumpei Yamasaki | 6-3,7-5 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/13 01:00 | Sekiguchi, Shuichi v Ryota Tanuma | 7-6,6-1 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/10 02:00 | Sekiguchi, Shuichi v Daisuke Sumizawa | 6-1,6-4 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/09 02:00 | Naoki Nakagawa v Sekiguchi, Shuichi | 7-5,3-6,5-7 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/08 02:30 | Sekiguchi, Shuichi v Jumpei Yamasaki | 6-4,6-3 |