 Japan: M25 Kashiwa - Doubles - Main |
|---|
| 1/8-finals | Fukuda S./Li Z. | Kawakami R./Tajima N. | 2:0 (6:4, 6:4) | details | 04.04.2023 |
| Japan: M25 Tsukuba - Doubles - Main |
|---|
| 1/8-finals | Kawakami R./Tajima N. | Hazawa S./Shiraishi H. | 0:1 RET. (63:7, 0:4) | details | 29.03.2023 |
| Japan: M25 Sapporo - Doubles - Main |
|---|
| Final | Niki T./Takeru Y. | Kawakami R./Tajima N. | 2:1 (3:6, 6:4, 10:8) | details | 04.09.2022 |
| Semi-finals | Ito T./Tanuma R. | Kawakami R./Tajima N. | 0:2 (2:6, 66:7) | details | 03.09.2022 |
| Quarter-finals | Fukuoka Y./Nakanishi S. | Kawakami R./Tajima N. | 0:2 (1:6, 0:6) | details | 02.09.2022 |
| 1/8-finals | Sekiguchi S./Takahashi Y. | Kawakami R./Tajima N. | 1:2 (61:7, 6:4, 6:10) | details | 30.08.2022 |
 Finland: M15 Helsinki - Doubles - Main |
|---|
| 1/8-finals | Kawakami R./Tajima N. | Jacquet K./Passaro F. | CAN. | details | 01.06.2021 |
| 1/8-finals | Kawakami R./Tajima N. | Droguet T./Eysseric J. | 0:2 (3:6, 2:6) | details | 01.06.2021 |
| Finland: M15 Kouvola - Doubles - Main |
|---|
| Semi-finals | Cozbinov A./Vilardo F. | Kawakami R./Tajima N. | 2:1 (3:6, 7:64, 10:8) | details | 28.05.2021 |
| Quarter-finals | Ayeni A./Palan D. | Kawakami R./Tajima N. | 0:2 (5:7, 3:6) | details | 27.05.2021 |
| 1/8-finals | Kawakami R./Tajima N. | Henning B./Krainer L. | 2:0 (7:5, 6:1) | details | 25.05.2021 |
