 Japan: M15 Kashiwa - Doubles - Main |
|---|
| Quarter-finals | Saitoh K./Sumizawa D. | Huang T./Jeong Y. | 0:2 (4:6, 4:6) | details | 04.04.2024 |
| 1/8-finals | Kono S./Okamura I. | Saitoh K./Sumizawa D. | 0:2 (1:6, 1:6) | details | 02.04.2024 |
| Japan: M15 Tsukuba - Doubles - Main |
|---|
| 1/8-finals | Shin S./Sumizawa D. | Chung Y./Jeong Y. | 0:2 (1:6, 4:6) | details | 27.03.2024 |
| Japan: M15 Nishi-Tokyo - Doubles - Main |
|---|
| Quarter-finals | Saitoh K./Yamanaka T. | Sumizawa D./Taguchi R. | 2:0 (7:65, 6:3) | details | 21.03.2024 |
| 1/8-finals | Sumizawa D./Taguchi R. | Chung Y./Jeong Y. | 2:1 (4:6, 7:62, 10:5) | details | 21.03.2024 |
| Japan: M15 Hinode - Doubles - Main |
|---|
| 1/8-finals | Kono Y./Sumizawa D. | Lee D. H./Saitoh K. | 0:2 (4:6, 5:7) | details | 14.03.2024 |
| Japan: M15 Yanagawa - Doubles - Main |
|---|
| 1/8-finals | Kawahashi Y./Sumizawa D. | Matsuda K./Shiraishi H. | CAN. | details | 21.12.2023 |
 Australia: M25 Gold Coast - Doubles - Main |
|---|
| 1/8-finals | Delaney Ja./Imai S. | Masabayashi T./Sumizawa D. | 2:0 (6:3, 6:4) | details | 30.11.2023 |
| Australia: M25 Brisbane - Doubles - Main |
|---|
| 1/8-finals | Fancutt T. J./Rai A. | Imai S./Sumizawa D. | 2:1 (65:7, 6:3, 10:8) | details | 23.11.2023 |
| Australia: M25 Cairns 2 - Doubles - Main |
|---|
| 1/8-finals | Beale J./Fancutt T. J. | Inoue G./Sumizawa D. | 2:1 (2:6, 6:4, 10:8) | details | 11.10.2023 |
| Australia: M25 Cairns - Doubles - Main |
|---|
| 1/8-finals | Ochi M./Sumizawa D. | Peliwo F./Rai A. | 0:2 (4:6, 2:6) | details | 03.10.2023 |
| Japan: M25 Takasaki - Doubles - Main |
|---|
| Quarter-finals | Kono Y./Kusuhara Y. | Saitoh K./Sumizawa D. | 2:0 (6:1, 6:3) | details | 21.09.2023 |
| 1/8-finals | Hashimoto K./Tani S. | Saitoh K./Sumizawa D. | 0:2 (3:6, 1:6) | details | 20.09.2023 |
| Japan: M25 Sapporo 2 - Doubles - Main |
|---|
| 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: M25 Sapporo - Doubles - Main |
|---|
| Quarter-finals | Sekiguchi S./Sumizawa D. | Kono Y./Nakagawa N. | WO. | details | 07.09.2023 |
| 1/8-finals | Sekiguchi S./Sumizawa D. | Inui Y./Okamura I. | 2:0 (7:5, 6:4) | details | 06.09.2023 |
 Hong Kong: M25 Hong Kong - Doubles - Main |
|---|
| Final | Saitoh K./Sumizawa D. | Gerasimov E./Li Z. | 0:2 (1:6, 4:6) | details | 04.09.2023 |
| Semi-finals | Delaney Je./Rai A. | Saitoh K./Sumizawa D. | 1:2 (7:5, 4:6, 8:10) | details | 03.09.2023 |
| Quarter-finals | Moundir A./Yang J. | Saitoh K./Sumizawa D. | 0:2 (4:6, 4:6) | details | 31.08.2023 |
| 1/8-finals | Saitoh K./Sumizawa D. | Delaney Ja./Mott B. | 2:1 (3:6, 6:3, 13:11) | details | 29.08.2023 |
| Australia: M15 Caloundra 2 - Doubles - Main |
|---|
| 1/8-finals | Matsuda R./Sumizawa D. | Braithwaite T./Jones S. | 1:2 (2:6, 6:3, 4:10) | details | 03.08.2023 |
