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| 1/16-finals | Shiraishi H. | Katayama S. | 2:0 (7:65, 6:2) | details | 28.10.2026 | ||
| 1/16-finals | Lee K. | Katayama S. | 1:1 RET. (3:6, 6:3, 3:0) | details | 01.09.2026 | ||
| 1/16-finals | Huesler M. | Katayama S. | 2:0 (6:4, 7:66) | details | 03.11.2025 | ||
| Semi-finals | Katayama S. | Shick B. | 0:2 (3:6, 0:6) | details | 01.11.2025 | ||
| Quarter-finals | Ichikawa T. | Katayama S. | 0:2 (5:7, 2:6) | details | 31.10.2025 | ||
| Quarter-finals | Katayama S./Tanaka Y. | Kawachi K./Yamanaka T. | WO. | details | 29.10.2026 | ||
| 1/8-finals | Katayama S./Tanaka Y. | Malaszszak M./Sato C. | 2:0 (6:2, 6:2) | details | 27.10.2026 | ||
| 1/8-finals | Matsuda R./Shiraishi H. | Ito T./Katayama S. | 2:1 (3:6, 6:4, 10:6) | details | 02.09.2026 | ||
| 1/8-finals | Katayama S./Ogura K. | Hazawa S./Otsuka K. | 0:2 (1:6, 65:7) | details | 08.07.2026 | ||
| Semi-finals | Kusuhara Y./Nakagawa S. | Katayama S./Shiraishi H. | 2:0 (6:4, 6:1) | details | 03.07.2026 | ||