Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| Challenger Yokohama | 2023/11/19 07:00 | Kalin Ivanovski v Shinji Hazawa | 3-6,6-4,7-5 |
| Challenger Kobe | 2023/11/13 02:55 | Giovanni Fonio v Shinji Hazawa | 6-3,6-7,6-1 |
| ITF M15 Nakhon Si Thammarat | 2023/07/14 03:40 | Shinji Hazawa v Sidharth Rawat | 6-4,5-7,3-6 |
| ITF M15 Nakhon Si Thammarat | 2023/07/13 02:00 | Shinji Hazawa v Amir Milushev | 6-1,4-6,6-4 |
| ITF M15 Nakhon Si Thammarat | 2023/07/12 02:00 | Shinji Hazawa v Chase Ferguson | 6-7,6-1,6-2 |
| ITF M15 Nakhon Si Thammarat | 2023/07/06 06:25 | Shinji Hazawa v Ji Hoon Son | 6-3,3-6,6-7 |
| ITF M15 Nakhon Si Thammarat | 2023/07/04 02:00 | Shinji Hazawa v Sidharth Rawat | 6-3,6-1 |
| ITF M25 Nakhon Si Thammarat | 2023/06/16 02:00 | Shinji Hazawa v Hiroki Moriya | 4-6,5-7 |