Stadium: Court 2 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Astana | 2023/08/02 09:55 | Khumoyun Sultanov v Aleksei Mokrov | 6-1,6-4 |
| Challenger Astana | 2023/07/30 05:00 | Khumoyun Sultanov v Denis Yevseyev | 5-7,6-2,4-6 |
| Challenger Astana | 2023/07/29 05:00 | Evgeny Karlovskiy v Khumoyun Sultanov | 3-6,1-6 |
| Challenger Astana | 2023/07/28 05:00 | Khumoyun Sultanov v Evgeny Philippov | 5-7,6-4,6-4 |
| Challenger Astana | 2023/07/24 08:30 | Khumoyun Sultanov v Shuichi Sekiguchi | 7-6,6-4 |
| ITF M25 Jablonec Nad Nisou | 2023/06/02 09:00 | Khumoyun Sultanov v Sebastian Fanselow | 5-7,5-7 |
| ITF M25 Jablonec Nad Nisou | 2023/06/01 07:55 | Khumoyun Sultanov v Buvaysar Gadamauri | 6-2,6-1 |
| ITF M25 Jablonec Nad Nisou | 2023/05/31 08:00 | Khumoyun Sultanov v Sandro Kopp | 6-4,6-1 |
| ITF M25 Astana | 2023/08/02 10:25 | Seita Watanabe v Timur Maulenov | 3-6,6-3,6-2 |
| ITF M25 Astana | 2023/08/01 05:20 | Seita Watanabe v Mykhailo Mossur | 6-4,6-3 |
| ITF M25 Astana | 2023/07/31 05:40 | Seita Watanabe v Vitaliy Zatsepin | 6-2,6-2 |
| Challenger Astana | 2023/07/23 10:35 | Seita Watanabe v Egor Agafonov | 2-6,2-6 |
| ITF M15 Monastir | 2023/07/19 14:20 | Seita Watanabe v Gilbert S K Junior | 2-6,6-2,2-6 |
| ITF M15 Monastir | 2023/07/17 15:00 | Seita Watanabe v Vyacheslav Ovchinnikov | 6-2,6-2 |
| ITF M15 Monastir | 2023/07/16 08:00 | Seita Watanabe v Alberto Bronzetti | 6-2,6-3 |
| ITF M15 Monastir | 2023/07/12 09:25 | Seita Watanabe v Cyril Vandermeersch | 5-7,3-6 |