 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: 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 |
 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 |
| Japan: M25 Kashiwa - Doubles - Main |
|---|
| Quarter-finals | Ichikawa T./Mochizuki Y. | Saitoh K./Sumizawa D. | WO. | details | 06.04.2023 |
| 1/8-finals | Saitoh K./Sumizawa D. | Hosono D./Yamamoto N. | 2:0 (7:5, 7:5) | details | 04.04.2023 |
 Australia: M25 Canberra - Doubles - Main |
|---|
| Semi-finals | Bayldon B./Smith J. | Saitoh K./Sumizawa D. | 2:0 (7:5, 6:3) | details | 17.03.2023 |
| Quarter-finals | Saitoh K./Sumizawa D. | Han Seon Yong/Ichikawa T. | 2:0 (6:4, 7:63) | details | 16.03.2023 |
| 1/8-finals | Court J./Gaal C. | Saitoh K./Sumizawa D. | 1:2 (6:3, 1:6, 4:10) | details | 14.03.2023 |
| Japan: M25 Sapporo - Doubles - Main |
|---|
| 1/8-finals | Saitoh K./Sumizawa D. | Imamura M./Noguchi R. | 0:2 (2:6, 2:6) | details | 02.09.2022 |
 Malaysia: M15 Kuching - Doubles - Main |
|---|
| 1/8-finals | Nguyen P. V./Trinh L. G. | Saitoh K./Sumizawa D. | 2:0 (6:3, 6:4) | details | 02.08.2022 |
 Montenegro: M15 Ulcinj 2 - Doubles - Main |
|---|
| 1/8-finals | Saitoh K./Sumizawa D. | Navone M./Paz J. P. | 1:2 (3:6, 6:0, 5:10) | details | 25.05.2022 |
| Montenegro: M25 Ulcinj 2 - Doubles - Main |
|---|
| 1/8-finals | Cretu C./Royer V. | Saitoh K./Sumizawa D. | 2:0 (6:4, 6:3) | details | 17.05.2022 |
| Montenegro: M15 Ulcinj - Doubles - Main |
|---|
| Final | Reitano S./Zanotti A. | Saitoh K./Sumizawa D. | 2:1 (4:6, 7:60, 10:8) | details | 14.05.2022 |
| Semi-finals | Saitoh K./Sumizawa D. | Markovski O./Srbljak G. | 2:1 (6:2, 4:6, 10:4) | details | 13.05.2022 |
| Quarter-finals | Saitoh K./Sumizawa D. | Denisov I./Liutarevich I. | 2:0 (6:4, 7:5) | details | 12.05.2022 |
| 1/8-finals | Saitoh K./Sumizawa D. | Bouquet L./Micov S. | 2:0 (6:0, 6:3) | details | 11.05.2022 |
| Montenegro: M15 Ulcinj 2 - Doubles - Main |
|---|
| 1/8-finals | Saitoh K./Sumizawa D. | Danilov S./Deviatiarov M. | 0:2 (4:6, 5:7) | details | 08.09.2021 |
 Egypt: M15 Cairo 10 - Doubles - Main |
|---|
| Final | Angele J. F./Folliot Q. | Saitoh K./Sumizawa D. | 1:2 (66:7, 6:4, 6:10) | details | 31.07.2021 |
| Semi-finals | Dancu V. A./Krainer L. | Saitoh K./Sumizawa D. | 0:2 (64:7, 3:6) | details | 30.07.2021 |
| Quarter-finals | Saitoh K./Sumizawa D. | Carou I./Monzon I. | 2:1 (4:6, 6:4, 10:7) | details | 29.07.2021 |
| 1/8-finals | Elsayed A./Zakaryia F. | Saitoh K./Sumizawa D. | 0:2 (3:6, 3:6) | details | 27.07.2021 |
