 Japan: M25 Sapporo 2 - Doubles - Main |
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| Quarter-finals | Kawachi K./Sumizawa D. | Nakagawa S./Ogura K. | 1:2 (2:6, 6:4, 2:10) | details | 14.09.2023 |
| 1/8-finals | Kawachi K./Sumizawa D. | Jang Y./Shin W. | 2:0 (6:2, 6:2) | details | 13.09.2023 |
| Japan: M15 Karuizawa - Doubles - Main |
|---|
| Semi-finals | Kawachi K./Sumizawa D. | Han Seon Yong/Shin S. | 0:2 (3:6, 3:6) | details | 04.06.2023 |
| Quarter-finals | Kawachi K./Sumizawa D. | Kono Y./Kusuhara Y. | 2:0 (6:3, 6:4) | details | 01.06.2023 |
| 1/8-finals | Kawachi K./Sumizawa D. | Matsumura R./Takamisawa T. | 2:0 (6:4, 6:4) | details | 31.05.2023 |
 Malaysia: M15 Kuala Lumpur - Doubles - Main |
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| Semi-finals | Shimizu Y./Tanuma R. | Kawachi K./Sumizawa D. | 2:1 (6:3, 4:6, 11:9) | details | 29.07.2022 |
| Quarter-finals | Kawachi K./Sumizawa D. | Le Quoc-K./Ly Nam H. | 2:1 (3:6, 6:0, 10:4) | details | 28.07.2022 |
| 1/8-finals | Kawachi K./Sumizawa D. | Abd Hazli I. D./M Rifqi F. | 2:0 (6:3, 6:2) | details | 26.07.2022 |
