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| 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 | ||
| 1/8-finals | Ferguson C. | Saitoh K. | 2:0 (6:4, 6:3) | dettagli | 02.04.2026 | ||
| 1/16-finals | Zamora N. | Saitoh K. | 0:2 (3:6, 3:6) | dettagli | 31.03.2026 | ||
| 1/16-finals | Hudd E. | Saitoh K. | 2:0 (6:3, 7:67) | dettagli | 24.03.2026 | ||
| 1/8-finals | Saitoh K. | Tu L. | 0:2 (1:6, 4:6) | dettagli | 05.03.2026 | ||
| 1/16-finals | Saitoh K. | Charlton J. | 2:0 (6:3, 7:5) | dettagli | 04.03.2026 | ||
| Quarter-finals | Aguiard E. | Saitoh K. | 2:0 (6:3, 6:1) | dettagli | 27.02.2026 | ||
| 1/8-finals | Saitoh K. | Sach T. | 2:0 (6:4, 7:5) | dettagli | 26.02.2026 | ||
| 1/16-finals | Saitoh K. | Adam-Gedge Z. | 2:0 (6:3, 6:3) | dettagli | 25.02.2026 | ||
| Quarter-finals | Ovcharenko O. | Saitoh K. | 2:0 (7:62, 7:5) | dettagli | 30.01.2026 | ||
| 1/8-finals | Saitoh K. | Castagnola L. | 2:1 (4:6, 7:5, 7:5) | dettagli | 29.01.2026 | ||
| 1/16-finals | Sahtali T. | Saitoh K. | 0:2 (0:6, 1:6) | dettagli | 28.01.2026 | ||
| 1/8-finals | Sakellaridis D. | Saitoh K. | 2:0 (6:1, 6:4) | dettagli | 23.01.2026 | ||
| 1/16-finals | Saitoh K. | Nesterov P. | 2:1 (6:4, 4:6, 7:65) | dettagli | 22.01.2026 | ||
| Semi-finals | Pokorny L. | Saitoh K. | 2:0 (6:0, 6:4) | dettagli | 17.01.2026 | ||
| Quarter-finals | Sakellaridis D. | Saitoh K. | 0:2 (3:6, 4:6) | dettagli | 17.01.2026 | ||
| 1/8-finals | Saitoh K. | Agafonov E. | 2:0 (7:5, 7:5) | dettagli | 15.01.2026 | ||
| 1/16-finals | Luis T. | Saitoh K. | 0:2 (2:6, 3:6) | dettagli | 14.01.2026 | ||
| Quarter-finals | Saitoh K. | Kim G. J. | 0:2 (4:6, 2:6) | dettagli | 28.11.2025 | ||
| 1/8-finals | Saitoh K. | Lee W. B. | 2:0 (7:65, 6:3) | dettagli | 27.11.2025 | ||
| 1/16-finals | Saitoh K. | Kim D. J. | 2:1 (66:7, 6:4, 7:67) | dettagli | 26.11.2025 | ||
| Quarter-finals | Dean T. | Saitoh K. | 2:0 (6:1, 6:0) | dettagli | 21.11.2025 | ||
| 1/8-finals | Jang Y. | Saitoh K. | 0:2 (1:6, 2:6) | dettagli | 20.11.2025 | ||
| 1/16-finals | Suzuki K. | Saitoh K. | 0:2 (1:6, 2:6) | dettagli | 18.11.2025 | ||
| Semi-finals | Matsuda K. | Saitoh K. | 2:1 (7:5, 5:7, 6:4) | dettagli | 02.11.2025 | ||
| Semi-finals | Bouzige M. | Saitoh K. | 2:0 (7:66, 6:4) | dettagli | 01.11.2025 | ||
| Quarter-finals | Kawahashi Y. | Saitoh K. | 1:2 (6:4, 4:6, 2:6) | dettagli | 31.10.2025 | ||
| 1/8-finals | Muto S. | Saitoh K. | 0:2 (2:6, 2:6) | dettagli | 30.10.2025 | ||
| 1/16-finals | Kim G. J. | Saitoh K. | 1:2 (6:4, 1:6, 3:6) | dettagli | 28.10.2025 | ||
| 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 | ||
| Quarter-finals | Adam-Gedge Z./Jones S. | Saitoh K./Yamanaka T. | 2:1 (4:6, 6:1, 11:9) | dettagli | 05.03.2026 | ||
| 1/8-finals | Host T./Vujic S. | Saitoh K./Yamanaka T. | 1:2 (6:3, 2:6, 8:10) | dettagli | 03.03.2026 | ||
| Final | Cook E./Sach T. | Saitoh K./Yamanaka T. | 2:0 (6:3, 6:2) | dettagli | 28.02.2026 | ||
| Semi-finals | Delaney Je./Hulme M. | Saitoh K./Yamanaka T. | 0:2 (5:7, 5:7) | dettagli | 27.02.2026 | ||
| Quarter-finals | Saitoh K./Yamanaka T. | Hazawa S./Rai A. | 2:0 (6:4, 6:4) | dettagli | 26.02.2026 | ||
| 1/8-finals | Saitoh K./Yamanaka T. | Anderson G./Connaughton L. | 2:0 (7:67, 6:1) | dettagli | 25.02.2026 | ||
| Quarter-finals | Barbieri A./Colombo A. | Saitoh K./Yamanaka T. | WO. | dettagli | 24.01.2026 | ||
| 1/8-finals | Saitoh K./Yamanaka T. | Ovcharenko O./Perez Contri S. | 2:1 (0:6, 6:4, 10:3) | dettagli | 23.01.2026 | ||
| Quarter-finals | Van Herck L./Vankan M. | Saitoh K./Yamanaka T. | 2:0 (7:63, 6:2) | dettagli | 15.01.2026 | ||
| 1/8-finals | Saitoh K./Yamanaka T. | Alkaya M./Johansson O. | 2:0 (6:2, 6:2) | dettagli | 13.01.2026 | ||
| 1/8-finals | Ann S./Kang Ku K. | Inui Y./Saitoh K. | 2:1 (5:7, 6:3, 10:8) | dettagli | 25.11.2025 | ||
| Quarter-finals | Inui Y./Saitoh K. | Dean T./Hashimoto H. | 0:2 (3:6, 3:6) | dettagli | 20.11.2025 | ||
| 1/8-finals | Inui Y./Saitoh K. | Park Y. J./Qabazard E. | 2:0 (6:4, 6:2) | dettagli | 19.11.2025 | ||
| 1/8-finals | Saitoh K./Yamanaka T. | Shick B./Tanuma R. | 1:2 (5:7, 6:0, 9:11) | dettagli | 28.10.2025 | ||