Stadium: Court 11 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Akko | 2022/05/18 12:40 | Alec Beckley v Seita Watanabe | 2-6,5-7 |
| ITF M15 Cairo | 2022/05/11 10:10 | Seita Watanabe v Jan Kobierski | 6-3,6-7,4-6 |
| ITF M15 Cairo | 2022/05/04 08:00 | Denis Klok v Seita Watanabe | 6-2,6-3 |
| ITF M15 Cairo | 2022/05/03 08:00 | Seita Watanabe v Ammar Alhaqbani | 6-2,6-4 |
| ITF M15 Cairo | 2022/05/02 09:00 | Seita Watanabe v Ilya Rudiukov | 7-5,7-6 |
| ITF M15 Monastir | 2022/04/05 08:30 | Seita Watanabe v Joris De Loore | 0-6,7-6,3-6 |
| ITF M15 Monastir | 2022/03/29 10:50 | Zhe Li v Seita Watanabe | 6-2,6-1 |
| ITF M15 Monastir | 2022/03/24 08:00 | Khololwam Montsi v Seita Watanabe | 6-4,6-3 |
| ITF M15 Indore | 2021/11/07 05:15 | Rishi Reddy v Aditya Vishal Balsekar | 6-1,6-2 |