Stadium: Court 6 Round: 14 Ground: Hardcourt outdoor
| ITF M15 Karuizawa | 2023/06/04 02:00 | Yuta Kawahashi v Tatsuma Ito | 7-5,6-2 |
| ITF M15 Karuizawa | 2023/06/03 07:00 | Sora Fukuda v Tatsuma Ito | 6-7,6-7 |
| ITF M15 Karuizawa | 2023/06/03 03:30 | Kazuma Kawachi v Tatsuma Ito | 1-6,4-6 |
| ITF M15 Karuizawa | 2023/06/01 03:20 | Preston Brown v Tatsuma Ito | 3-6,0-6 |
| ITF M15 Karuizawa | 2023/05/31 03:35 | Seonyong Han v Tatsuma Ito | 6-7,3-6 |
| Challenger Busan | 2023/05/08 03:40 | Yuki Mochizuki v Tatsuma Ito | 6-4,4-6,6-2 |
| Challenger Busan | 2023/05/07 02:30 | Tatsuma Ito v Mukund Sasikumar | 5-7,6-4,6-4 |
| Challenger Gwangju | 2023/05/01 01:30 | Tatsuma Ito v Peter Gojowczyk | 4-6,4-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/21 01:55 | Sanhui Shin v Palaphoom Kovapitukted | 5-7,6-4,2-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/20 04:30 | Sanhui Shin v Thanapet Chanta | 6-1,6-4 |
| ITF M15 Nakhon Si Thammarat | 2023/07/18 02:00 | Sanhui Shin v Pruchya Isarow | 6-2,6-2 |
| ITF M15 Nakhon Si Thammarat | 2023/07/12 03:35 | Sanhui Shin v Kasidit Samrej | 4-6,4-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/06 07:00 | Sanhui Shin v S D Prajwal Dev | 3-6,6-7 |
| ITF M15 Nakhon Si Thammarat | 2023/07/05 06:45 | Sanhui Shin v Thanapet Chanta | 6-4,6-4 |
| ITF M25 Anseong | 2023/06/25 02:50 | Gerard Campana Lee v Sanhui Shin | 7-5,6-4 |
| ITF M25 Anseong | 2023/06/24 05:50 | Sanhui Shin v Yuki Mochizuki | 7-5,1-6,6-3 |