Stadium: Court 3 Round: 26 Ground: Hardcourt indoor
| Challenger Biel MD | 2021/09/21 16:30 | Janvier/Kadhe v Matsui/Uesugi | 7-6,7-6 |
| Challenger Rennes MD | 2021/09/14 14:30 | Matsui/Uesugi v Kadhe/Schnur | 1-6,6-7 |
| Challenger Cassis MD | 2021/09/10 08:30 | Matsui/Uesugi v Hach Verdugo H / Reyes-Varela M | 6-3,6-7,7-10 |
| Challenger Cassis MD | 2021/09/09 10:35 | Cornea/Tsitsipas v Matsui/Uesugi | 7-5,4-6,8-10 |
| Challenger Cassis MD | 2021/09/08 11:35 | Matsui/Uesugi v Nedunchezhiyan J / Raja P | 7-5,6-1 |
| Challenger Mallorca MD | 2021/09/01 19:20 | Matsui/Uesugi v Romboli/Zielinski | 7-5,6-7,10-12 |
| Fergana, Uzbekistan, Doubles | 2019/06/19 10:55 | Matsui/Uesugi v Fayziev / Sultanov | 6-7,5-7 |
| Hong Kong, Doubles M-ITF-HKG-04A | 2019/06/11 05:00 | Duncan S / Lazdins A v Matsui/Uesugi | 3-6,0-0 |
| ITF M25 Meitar MD | 2021/11/06 08:00 | Vasa/Vasa v Nakagawa/Noguchi | 6-1,7-6 |
| ITF M25 Meitar MD | 2021/11/05 08:00 | Vasa/Vasa v Baron/Weintraub | 6-3,6-2 |
| ITF M25 Meitar MD | 2021/11/05 08:00 | Vasa/Vasa v Baron/Weintraub | 6-3,5-2 |
| ITF M25 Meitar MD | 2021/11/04 11:30 | Vasa/Vasa v Nakamura/Parker | 6-1,6-4 |
| ITF M25 Meitar MD | 2021/11/03 12:10 | Added/Cukierman v Vasa/Vasa | 2-6,3-6 |
| ITF M15 Parnu MD | 2021/10/26 10:30 | Bertola/Schiavetti v Vasa/Vasa | 6-4,6-4 |
| ITF M15 Bratislava MD | 2021/08/27 11:30 | Vasa/Vasa v Navone/Vilardo | 4-6,4-6 |
| ITF M15 Bratislava MD | 2021/08/24 12:00 | Vasa/Vasa v Fekete J / Minarik K | 6-3,7-6 |