Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Nakhon Si Thammarat | 2023/06/06 02:00 | Shinji Hazawa v Thantub Suksumrarn | 6-0,6-3 |
| ITF M15 Nakhon Si Thammarat | 2023/06/11 02:00 | Shinji Hazawa v S D Prajwal Dev | 6-3,6-4 |
| ITF M15 Nakhon Si Thammarat | 2023/06/10 02:00 | Blake Ellis v Shinji Hazawa | 4-6,2-6 |
| ITF M15 Nakhon Si Thammarat | 2023/06/09 02:00 | Shinji Hazawa v Manish Sureshkumar | 6-3,6-2 |
| ITF M15 Nakhon Si Thammarat | 2023/06/08 04:05 | Shinji Hazawa v Finn Reynolds | 6-4,6-3 |
| ITF M15 Nakhon Si Thammarat | 2023/06/06 02:00 | Shinji Hazawa v Thantub Suksumrarn | 6-0,6-3 |
| ITF M15 Nakhon Si Thammarat | 2023/05/31 02:00 | Shinji Hazawa v Chase Ferguson | 2-6,4-6 |
| Challenger Busan | 2023/05/08 02:00 | Jason Jung v Shinji Hazawa | 6-2,6-4 |
| Challenger Gwangju | 2023/04/30 03:05 | Shinji Hazawa v Peter Gojowczyk | 1-6,3-6 |
| ITF M15 Nakhon Si Thammarat | 2023/06/06 02:00 | Shinji Hazawa v Thantub Suksumrarn | 6-0,6-3 |
| ITF M15 Nakhon Si Thammarat | 2023/06/01 02:00 | Blake Ellis v Thantub Suksumrarn | 7-6,6-4 |
| ITF M15 Nakhon Si Thammarat | 2023/05/31 02:00 | Thantub Suksumrarn v Jordan Chiu | 6-3,6-3 |
| ITF M25 Jakarta | 2023/04/18 03:35 | Yunseok Jang v Thantub Suksumrarn | 6-1,1-6,10-6 |
| ITF M25 Jakarta | 2023/04/17 05:30 | Bharath Nishok Kumaran v Thantub Suksumrarn | 2-6,1-6 |
| ITF M15 Singapore | 2023/04/06 03:45 | Thantub Suksumrarn v Palaphoom Kovapitukted | 4-6,6-7 |
| ITF M15 Singapore | 2023/04/05 08:10 | Thantub Suksumrarn v Jake Delaney | 7-5,6-4 |
| ITF M15 Singapore | 2023/04/03 09:35 | Thantub Suksumrarn v Danielle Abadia | 6-1,6-4 |