Select tournament type
| 1/16-finals | Watanabe K. | Hashimoto H. | 0:1 RET. (0:6, 1:4) | details | 28.10.2026 | ||
| 1/8-finals | Hou C. | Watanabe K. | 2:1 (6:4, 3:6, 6:3) | details | 22.10.2026 | ||
| 1/16-finals | Watanabe K. | Kurabayashi D. | 2:0 (6:0, 6:0) | details | 20.10.2026 | ||
| 1/16-finals | Watanabe K. | Mackenzie J. | 0:2 (2:6, 4:6) | details | 08.09.2026 | ||
| 1/32-finals | Watanabe K. | Gaines Jr J. | 2:0 (6:3, 6:3) | details | 06.09.2026 | ||
| 1/32-finals | Rybkin S. | Watanabe K. | 2:0 (6:3, 6:4) | details | 05.07.2026 | ||
| 1/16-finals | Antonius M. | Watanabe K. | 2:0 (6:3, 6:0) | details | 01.06.2026 | ||
| 1/32-finals | Lawlor R. | Watanabe K. | 1:2 (7:5, 2:6, 2:6) | details | 31.05.2026 | ||
| 1/32-finals | Watanabe K. | Miguel L. A. | 0:2 (4:6, 3:6) | details | 25.01.2026 | ||
| 1/8-finals | Kawanishi H./Watanabe K. | Kawachi K./Yamanaka T. | 1:2 (6:4, 3:6, 5:10) | details | 27.10.2026 | ||
| 1/8-finals | Kawanishi H./Watanabe K. | Fukuda S./Noguchi M. | 0:2 (4:6, 4:6) | details | 21.10.2026 | ||
| 1/8-finals | Kawanishi H./Watanabe K. | Azam S./Zhalgasbay D. | 1:2 (7:66, 64:7, 4:10) | details | 09.09.2026 | ||
| 1/16-finals | Antonius M./Lee J. | Kawanishi H./Watanabe K. | 0:2 (3:6, 5:7) | details | 08.09.2026 | ||
| Quarter-finals | Kawanishi H./Watanabe K. | Antonius M./Johnson A. | 0:2 (4:6, 2:6) | details | 09.07.2026 | ||
| 1/8-finals | Bolivar Idarraga J. M./Pagani D. | Kawanishi H./Watanabe K. | 0:2 (4:6, 3:6) | details | 08.07.2026 | ||
| 1/16-finals | Kawanishi H./Watanabe K. | Doig C./Kisimov D. | 2:1 (3:6, 6:3, 16:14) | details | 06.07.2026 | ||
| 1/16-finals | Kawanishi H./Watanabe K. | Storck F. L./Thomas F. | 0:2 (4:6, 65:7) | details | 01.06.2026 | ||
| Semi-finals | Kawanishi H./Watanabe K. | Ibraimi Y./Kose C. | 1:2 (64:7, 6:4, 6:10) | details | 30.01.2026 | ||
| Quarter-finals | Kawanishi H./Watanabe K. | Dembo J./Jovanovski D. | 2:0 (6:3, 6:2) | details | 29.01.2026 | ||
| 1/8-finals | Alexandrescou Y. T./Tabata R. | Kawanishi H./Watanabe K. | 0:2 (67:7, 2:6) | details | 27.01.2026 | ||
| 1/16-finals | Camacho E./Storck F. L. | Kawanishi H./Watanabe K. | 0:2 (5:7, 4:6) | details | 26.01.2026 | ||