Stadium: Court 2 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Chiang Rai | 2022/06/16 06:15 | Shintaro Imai v Shinji Hazawa | 6-2,6-4 |
| ITF M15 Chiang Rai | 2022/06/16 02:00 | Jie Cui v Shinji Hazawa | 3-6,6-3,3-6 |
| ITF M25 Chiang Rai | 2022/06/11 02:00 | Shintaro Imai v Shinji Hazawa | 6-1,6-2 |
| ITF M25 Chiang Rai | 2022/06/10 02:00 | Shinji Hazawa v Yusuke Takahashi | 3-6,6-2,6-2 |
| ITF M25 Chiang Rai | 2022/06/09 02:00 | Yuki Mochizuki v Shinji Hazawa | 6-3,2-6,3-6 |
| ITF M25 Chiang Rai | 2022/06/08 04:30 | Nikita Volonski v Shinji Hazawa | 1-6,2-6 |
| ITF M25 Chiang Rai | 2022/06/01 02:00 | Shinji Hazawa v Kento Takeuchi | 6-7,6-2,4-6 |
| ITF M15 Heraklion | 2022/05/26 06:55 | Stefanos Sakellaridis v Shinji Hazawa | 4-6,6-4,6-3 |
| ITF M15 Seremban | 2022/07/20 02:50 | Ryuki Matsuda v Hikaru Shiraishi | 4-6,0-6 |
| ITF M15 Monastir | 2022/03/05 12:15 | Raphael Collignon v Hikaru Shiraishi | 4-6,7-6,6-0 |
| ITF M15 Monastir | 2022/03/04 08:00 | Dominik Boehler v Hikaru Shiraishi | 3-6,2-6 |
| ITF M15 Monastir | 2022/03/03 10:10 | Martin Breysach v Hikaru Shiraishi | 5-7,1-6 |
| ITF M15 Monastir | 2022/03/02 15:20 | Hikaru Shiraishi v Hanwen Li | 6-3,6-2 |
| ITF M25 Monastir | 2022/03/01 13:30 | Alexandre Aubriot v Hikaru Shiraishi | 6-7,1-6 |
| ITF M25 Monastir | 2022/03/01 09:00 | Alberto Morolli v Hikaru Shiraishi | 6-4,1-6,3-10 |
| ITF M25 Monastir | 2022/02/27 10:00 | Matteo De Vincentis v Hikaru Shiraishi | 6-7,1-6 |