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| 1/16-finals | Hwang D. | Sumizawa D. | 2:1 (6:2, 2:6, 6:4) | dettagli | 05.08.2026 | ||
| 1/16-finals | Taguchi R. | Sumizawa D. | 2:0 (6:3, 6:1) | dettagli | 28.07.2026 | ||
| 1/16-finals | Sumizawa D. | Delaney Ja. | 0:2 (4:6, 64:7) | dettagli | 22.07.2026 | ||
| 1/16-finals | Cho Seung Woo | Sumizawa D. | 2:0 (6:3, 7:62) | dettagli | 26.05.2026 | ||
| Semi-finals | Papa C. | Sumizawa D. | 2:0 (6:1, 6:2) | dettagli | 17.05.2026 | ||
| 1/16-finals | Sumizawa D. | Vithoontien L. | 0:2 (4:6, 4:6) | dettagli | 31.03.2026 | ||
| Semi-finals | Watt J. | Sumizawa D. | 2:0 (6:3, 6:4) | dettagli | 04.01.2026 | ||
| Semi-finals | Sumizawa D. | Yamanaka T. | 0:2 (3:6, 0:6) | dettagli | 16.11.2025 | ||
| Semi-finals | Kumasaka T. | Sumizawa D. | 2:1 (6:4, 4:6, 6:1) | dettagli | 09.11.2025 | ||
| Semi-finals | Yuzuki T. | Sumizawa D. | 2:0 (6:4, 6:3) | dettagli | 02.11.2025 | ||
| 1/8-finals | Sumizawa D. | Tomida Y. | 0:2 (1:6, 3:6) | dettagli | 23.10.2025 | ||
| 1/16-finals | Sumizawa D. | Cho Seung Woo | 2:0 (6:2, 6:2) | dettagli | 21.10.2025 | ||
| 1/8-finals | Sumizawa D. | Kumasaka T. | 1:2 (6:3, 5:7, 61:7) | dettagli | 18.09.2025 | ||
| 1/16-finals | Sumizawa D. | Brumm J. | 2:0 (7:65, 6:2) | dettagli | 17.09.2025 | ||
| 1/8-finals | Sumizawa D. | Broom C. | 0:2 (2:6, 2:6) | dettagli | 04.09.2025 | ||
| 1/16-finals | Kusuhara Y. | Sumizawa D. | 0:2 (1:6, 4:6) | dettagli | 02.09.2025 | ||
| 1/8-finals | Sumizawa D. | Erel Y. | 0:2 (2:6, 2:6) | dettagli | 28.08.2025 | ||
| 1/16-finals | Sumizawa D. | Arcon A. | 2:1 (2:6, 6:4, 6:0) | dettagli | 26.08.2025 | ||
| 1/16-finals | Lee J. | Sumizawa D. | 2:1 (3:6, 6:4, 6:1) | dettagli | 20.08.2025 | ||
| Semi-finals | Sumizawa D. | Kikuchi Y. | 0:2 (3:6, 2:6) | dettagli | 02.08.2025 | ||
| Quarter-finals | Zhang T. | Sumizawa D. | 1:1 RET. (6:3, 2:6, 0:3) | dettagli | 01.08.2025 | ||
| 1/8-finals | Ochi M. | Sumizawa D. | 1:2 (3:6, 6:4, 5:7) | dettagli | 31.07.2025 | ||
| Final | Ichikawa T./Shiraishi H. | Becroft I./Sumizawa D. | 2:0 (6:1, 7:65) | dettagli | 01.08.2026 | ||
| Semi-finals | Becroft I./Sumizawa D. | Kawahashi Y./Matsuda R. | 2:0 (6:1, 6:4) | dettagli | 31.07.2026 | ||
| Quarter-finals | Da Costa R./Zapp E. D. | Becroft I./Sumizawa D. | 1:2 (65:7, 7:5, 8:10) | dettagli | 30.07.2026 | ||
| 1/8-finals | Susanto A./Trismuwantara G. | Becroft I./Sumizawa D. | 1:2 (4:6, 7:5, 1:10) | dettagli | 28.07.2026 | ||
| 1/8-finals | Ogura K./Sumizawa D. | Mehrotra A./Talic Z. | 0:2 (62:7, 2:6) | dettagli | 23.07.2026 | ||
| 1/8-finals | Sumizawa D./Takamisawa T. | Mitsui S./Nakagawa N. | 0:2 (4:6, 2:6) | dettagli | 07.07.2026 | ||
| Quarter-finals | Katayama S./Shiraishi H. | Shin S./Sumizawa D. | 2:0 (6:3, 7:5) | dettagli | 02.07.2026 | ||
| 1/8-finals | Shin S./Sumizawa D. | Mochizuki Y./Nakamura R. | 2:0 (6:1, 6:3) | dettagli | 01.07.2026 | ||
| Quarter-finals | Kawachi K./Sumizawa D. | Kumasaka T./Takahata R. | 1:2 (1:6, 6:3, 7:10) | dettagli | 19.06.2026 | ||
| 1/8-finals | Masabayashi T./Vithoontien L. | Kawachi K./Sumizawa D. | 0:2 (65:7, 3:6) | dettagli | 16.06.2026 | ||
| 1/8-finals | Delaney Je./Sinclair C. | Oki Y./Sumizawa D. | 2:1 (6:3, 3:6, 10:7) | dettagli | 09.06.2026 | ||
| 1/8-finals | Shin S./Sim S. | Noguchi M./Sumizawa D. | 2:0 (7:5, 6:3) | dettagli | 26.05.2026 | ||
| Quarter-finals | Sim S./Sumizawa D. | Kawahashi Y./Yamasaki J. | 0:2 (3:6, 3:6) | dettagli | 03.04.2026 | ||
| 1/8-finals | Sim S./Sumizawa D. | Krall L./Zamora N. | 2:0 (6:4, 6:2) | dettagli | 02.04.2026 | ||
| 1/8-finals | Fukuda S./Vithoontien L. | Kawahashi Y./Sumizawa D. | 2:1 (1:6, 6:4, 10:5) | dettagli | 24.03.2026 | ||
| Quarter-finals | Sinclair C./Sumizawa D. | Reynolds F./Watt J. | 1:2 (7:64, 3:6, 5:10) | dettagli | 07.01.2026 | ||
| 1/8-finals | Brown P./Mehrotra A. | Sinclair C./Sumizawa D. | 0:2 (5:7, 4:6) | dettagli | 06.01.2026 | ||
| 1/8-finals | Koyama H./Suzuki K. | Sumizawa D./Tomida Y. | 2:1 (65:7, 6:3, 11:9) | dettagli | 22.10.2025 | ||
| 1/8-finals | Masabayashi T./Sumizawa D. | Saitoh K./Yamanaka T. | 1:2 (2:6, 6:3, 7:10) | dettagli | 16.09.2025 | ||
| Final | Mochizuki Y./Noguchi M. | Saitoh K./Sumizawa D. | 2:0 (6:3, 6:3) | dettagli | 14.09.2025 | ||
| Semi-finals | Saitoh K./Sumizawa D. | Honda N./Matsuoka H. | 2:1 (5:7, 6:2, 10:7) | dettagli | 12.09.2025 | ||
| Quarter-finals | Saitoh K./Sumizawa D. | Ichikawa T./Isomura K. | 2:0 (7:64, 6:2) | dettagli | 12.09.2025 | ||
| 1/8-finals | Katayama S./Kusuhara Y. | Saitoh K./Sumizawa D. | 0:2 (3:6, 3:6) | dettagli | 09.09.2025 | ||
| Quarter-finals | Broom C./Whitehouse M. | Okamura I./Sumizawa D. | 2:1 (4:6, 6:2, 10:8) | dettagli | 04.09.2025 | ||
| 1/8-finals | Okamura I./Sumizawa D. | Blando J./Blando M. | 2:1 (6:4, 1:6, 10:7) | dettagli | 02.09.2025 | ||
| 1/8-finals | Mitsui S./Sumizawa D. | Lee K./Lin N. H. | 1:2 (7:5, 5:7, 4:10) | dettagli | 27.08.2025 | ||
| Quarter-finals | Sumizawa D./Takahata R. | Rifqi Fitriadi M./Lee J. | 1:2 (2:6, 6:4, 6:10) | dettagli | 21.08.2025 | ||
| 1/8-finals | Sumizawa D./Takahata R. | Kitthachok K./Majoli Maggioli T. T. | 2:0 (6:3, 6:2) | dettagli | 20.08.2025 | ||