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| Quarter-finals | Lee K. | Saitoh K. | 0:2 (0:6, 2:6) | dettagli | 11.09.2026 | ||
| 1/8-finals | Tanaka Y. | Saitoh K. | 0:2 (4:6, 2:6) | dettagli | 10.09.2026 | ||
| 1/16-finals | Saitoh K. | Isomura K. | 2:0 (6:4, 6:1) | dettagli | 09.09.2026 | ||
| Quarter-finals | Erel Y. | Saitoh K. | 2:0 (6:0, 6:0) | dettagli | 04.09.2026 | ||
| 1/8-finals | Saitoh K. | Ferguson C. | 2:0 (6:2, 6:3) | dettagli | 03.09.2026 | ||
| 1/16-finals | Saitoh K. | Okabe S. | 2:0 (6:1, 6:4) | dettagli | 01.09.2026 | ||
| 1/16-finals | Saitoh K. | Dellavedova M. | 0:2 (1:6, 2:6) | dettagli | 26.08.2026 | ||
| 1/16-finals | Huang T. | Saitoh K. | 2:0 (6:2, 7:5) | dettagli | 18.08.2026 | ||
| Semi-finals | Saitoh K. | Ryan Ziegann S. | 1:2 (3:6, 7:61, 3:6) | dettagli | 01.08.2026 | ||
| Quarter-finals | Shin S. | Saitoh K. | 1:2 (7:66, 0:6, 5:7) | dettagli | 31.07.2026 | ||
| 1/8-finals | Da Costa R. | Saitoh K. | 0:2 (64:7, 64:7) | dettagli | 30.07.2026 | ||
| 1/16-finals | Bagnolini D. | Saitoh K. | 0:2 (2:6, 2:6) | dettagli | 28.07.2026 | ||
| 1/8-finals | Chang A. | Saitoh K. | 2:0 (7:5, 6:3) | dettagli | 23.07.2026 | ||
| 1/16-finals | Nakamura R. | Saitoh K. | 0:2 (4:6, 0:6) | dettagli | 22.07.2026 | ||
| 1/8-finals | Saitoh K. | Heck H. | 0:1 RET. (4:6, 1:3) | dettagli | 18.06.2026 | ||
| 1/16-finals | Ogura K. | Saitoh K. | 1:2 (61:7, 6:4, 5:7) | dettagli | 17.06.2026 | ||
| Quarter-finals | Magadan A. | Saitoh K. | 2:1 (3:6, 6:3, 6:4) | dettagli | 29.05.2026 | ||
| 1/8-finals | Saitoh K. | Sach T. | 2:0 (7:5, 6:0) | dettagli | 28.05.2026 | ||
| 1/16-finals | Oh H. T. | Saitoh K. | 1:2 (4:6, 6:3, 5:7) | dettagli | 27.05.2026 | ||
| Quarter-finals | Kim D. J. | Saitoh K. | 2:0 (6:2, 7:65) | dettagli | 22.05.2026 | ||
| 1/8-finals | Heck H. | Saitoh K. | 0:2 (1:6, 1:6) | dettagli | 21.05.2026 | ||
| 1/16-finals | Saitoh K. | Dellavedova M. | 2:0 (7:62, 6:3) | dettagli | 20.05.2026 | ||
| Final | Roh H. | Saitoh K. | 0:2 (4:6, 1:6) | dettagli | 17.05.2026 | ||
| Semi-finals | Shin W. | Saitoh K. | 1:2 (4:6, 7:5, 5:7) | dettagli | 16.05.2026 | ||
| Quarter-finals | Saitoh K. | Shin S. | 2:1 (6:3, 2:6, 6:4) | dettagli | 15.05.2026 | ||
| 1/8-finals | Hazawa S. | Saitoh K. | 0:2 (3:6, 1:6) | dettagli | 14.05.2026 | ||
| 1/16-finals | Saitoh K. | Suzuki K. | 2:0 (6:3, 6:1) | dettagli | 13.05.2026 | ||
| 1/16-finals | Summers M. | Saitoh K. | 2:0 (7:5, 6:3) | dettagli | 21.04.2026 | ||
| 1/8-finals | Hudd E. | Saitoh K. | 2:0 (6:4, 6:4) | dettagli | 16.04.2026 | ||
| 1/16-finals | Saitoh K. | Becroft I. | 2:0 (6:2, 7:6) | dettagli | 15.04.2026 | ||
| Quarter-finals | Saitoh K./Tanuma R. | Sueoka Y./Tajima N. | 0:2 (3:6, 5:7) | dettagli | 03.09.2026 | ||
| 1/8-finals | Vance J./Vance J. | Saitoh K./Tanuma R. | 0:2 (65:7, 3:6) | dettagli | 01.09.2026 | ||
| Quarter-finals | Ogura K./Saitoh K. | Ichikawa T./Imamura M. | 0:2 (1:6, 2:6) | dettagli | 22.08.2026 | ||
| 1/8-finals | Cho Seung Woo/Jeong Y. | Ogura K./Saitoh K. | 1:2 (6:3, 3:6, 8:10) | dettagli | 18.08.2026 | ||
| 1/8-finals | Oki Y./Saitoh K. | Ichikawa T./Imamura M. | 0:2 (3:6, 2:6) | dettagli | 17.06.2026 | ||
| Final | Jeong Y./Kim J. | Oki Y./Saitoh K. | WO. | dettagli | 30.05.2026 | ||
| Semi-finals | Oki Y./Saitoh K. | Shin S./Sim S. | 2:0 (6:4, 6:1) | dettagli | 29.05.2026 | ||
| Quarter-finals | Oki Y./Saitoh K. | Isomura K./Ochi M. | WO. | dettagli | 28.05.2026 | ||
| 1/8-finals | Oki Y./Saitoh K. | Cho Seung Woo/Lee D. H. | 2:0 (6:4, 6:4) | dettagli | 26.05.2026 | ||
| Quarter-finals | Oki Y./Saitoh K. | Ichikawa T./Kawachi K. | 1:2 (5:7, 7:64, 6:10) | dettagli | 21.05.2026 | ||
| 1/8-finals | Ann S./Kim G. J. | Oki Y./Saitoh K. | 1:2 (3:6, 6:2, 3:10) | dettagli | 19.05.2026 | ||
| 1/8-finals | Shin S./Sim S. | Saitoh K./Shiraishi H. | 2:0 (6:2, 6:3) | dettagli | 12.05.2026 | ||
| Quarter-finals | Ichikawa T./Saitoh K. | Shiraishi H./Takahata R. | 1:2 (6:3, 3:6, 3:10) | dettagli | 23.04.2026 | ||
| 1/8-finals | Ichikawa T./Saitoh K. | Hulme M./Mehrotra A. | 2:0 (6:4, 7:5) | dettagli | 21.04.2026 | ||
| Quarter-finals | Palan D./Yap M. H. | Imai S./Saitoh K. | WO. | dettagli | 16.04.2026 | ||
| 1/8-finals | Jimenez M. D./Olivarez E. | Imai S./Saitoh K. | 0:2 (3:6, 0:6) | dettagli | 15.04.2026 | ||
| Final | Kawahashi Y./Yamasaki J. | Saitoh K./Shiraishi H. | 0:2 (3:6, 4:6) | dettagli | 04.04.2026 | ||
| Semi-finals | Saitoh K./Shiraishi H. | Ogura K./Vithoontien L. | 2:0 (7:66, 6:4) | dettagli | 03.04.2026 | ||
| Quarter-finals | Tanuma R./Yamanaka T. | Saitoh K./Shiraishi H. | 0:2 (0:6, 2:6) | dettagli | 03.04.2026 | ||
| 1/8-finals | Hashimoto H./Heck H. | Saitoh K./Shiraishi H. | 0:2 (3:6, 62:7) | dettagli | 02.04.2026 | ||