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| 1/16-finals | Kaji H. | Astakhova D. | 0:2 (1:6, 1:6) | detalhes | 26.11.2025 | ||
| 1/16-finals | Zhang S. | Kaji H. | 2:0 (6:4, 6:3) | detalhes | 19.11.2025 | ||
| 1/8-finals | Rouvroy M. | Kaji H. | 2:0 (6:3, 7:62) | detalhes | 14.11.2025 | ||
| 1/16-finals | Hageman M. | Kaji H. | 0:2 (2:6, 1:6) | detalhes | 12.11.2025 | ||
| 1/8-finals | Ercan M. | Kaji H. | 2:0 (6:2, 6:4) | detalhes | 06.11.2025 | ||
| 1/16-finals | Nilsson L. | Kaji H. | 0:2 (61:7, 1:6) | detalhes | 04.11.2025 | ||
| Final | Kaji H. | Sidorova K. | 0:2 (1:6, 2:6) | detalhes | 26.10.2025 | ||
| Semi-finals | Kaji H. | Liu K. | 2:0 (7:64, 6:4) | detalhes | 25.10.2025 | ||
| 1/8-finals | Kaji H. | Gao X. | 0:2 (3:6, 3:6) | detalhes | 15.10.2025 | ||
| 1/16-finals | Kaji H. | Ren Y. | 2:1 (4:6, 6:2, 7:5) | detalhes | 13.10.2025 | ||
| Quarter-finals | Kaji H. | Lee C. Y. | 1:2 (3:6, 6:2, 65:7) | detalhes | 10.10.2025 | ||
| 1/8-finals | Kaji H. | Zavatska K. | 2:0 (7:62, 6:1) | detalhes | 09.10.2025 | ||
| 1/16-finals | Kaji H. | Zhang Y. | 2:0 (7:64, 6:4) | detalhes | 08.10.2025 | ||
| Semi-finals | Kaji H. | Lee E. | 0:2 (5:7, 1:6) | detalhes | 27.09.2025 | ||
| Quarter-finals | Kuramochi M. | Kaji H. | 0:2 (4:6, 3:6) | detalhes | 26.09.2025 | ||
| 1/8-finals | Zhu A. | Kaji H. | 0:2 (3:6, 4:6) | detalhes | 25.09.2025 | ||
| 1/16-finals | Plipuech P. | Kaji H. | 0:2 (4:6, 64:7) | detalhes | 23.09.2025 | ||
| 1/16-finals | Sebov K. | Kaji H. | 2:0 (6:3, 6:1) | detalhes | 02.09.2025 | ||
| 1/16-finals | Kubka M. | Kaji H. | 2:1 (6:2, 3:6, 7:65) | detalhes | 26.08.2025 | ||
| 1/8-finals | Kaji H. | Ionescu E. M. | 0:2 (3:6, 4:6) | detalhes | 21.08.2025 | ||
| 1/16-finals | Kaji H. | Li Y. | 1:1 RET. (3:6, 7:5, 3:2) | detalhes | 19.08.2025 | ||
| 1/16-finals | Kaji H. | Knutson G. | 1:2 (6:2, 1:6, 0:6) | detalhes | 22.07.2025 | ||
| 1/16-finals | Kaji H. | Valdmannova V. | 0:2 (4:6, 0:6) | detalhes | 15.07.2025 | ||
| 1/16-finals | Kaji H. | Matsuda M. | 0:2 (5:7, 4:6) | detalhes | 09.07.2025 | ||
| 1/16-finals | Karatancheva L. | Kaji H. | 2:0 (7:5, 6:0) | detalhes | 17.06.2025 | ||
| 1/16-finals | Carle M. L. | Kaji H. | 2:0 (6:1, 6:2) | detalhes | 10.06.2025 | ||
| 1/16-finals | Bondar A. | Kaji H. | 2:0 (6:1, 6:2) | detalhes | 03.06.2025 | ||
| Final | Kaji H. | Vedder E. | CAN. | detalhes | 02.06.2025 | ||
| 1/8-finals | Kaji H. | Toth A. K. | 0:2 (0:6, 0:6) | detalhes | 29.05.2025 | ||
| 1/16-finals | Kaji H. | Pislak M. | 2:0 (6:4, 6:1) | detalhes | 28.05.2025 | ||
| Quarter-finals | Rouvroy M. | Kaji H. | 2:1 (67:7, 7:5, 7:63) | detalhes | 19.05.2025 | ||
| 1/16-finals | Liang E. S. | Kaji H. | 2:1 (5:7, 6:4, 6:3) | detalhes | 30.04.2025 | ||
| 1/8-finals | Kaji H. | Marino R. | 0:2 (3:6, 4:6) | detalhes | 24.04.2025 | ||
| 1/16-finals | Kaji H. | Ma Y. | 2:0 (6:2, 6:3) | detalhes | 23.04.2025 | ||
| Semi-finals | Kaji H. | Iatcenko P. | 0:2 (4:6, 2:6) | detalhes | 19.04.2025 | ||
| Quarter-finals | Kaji H. | Shinikova I. | 2:1 (4:6, 6:3, 6:4) | detalhes | 18.04.2025 | ||
| 1/8-finals | Kaji H. | Blake E. | 2:0 (6:1, 6:1) | detalhes | 17.04.2025 | ||
| 1/16-finals | Kaji H. | Ezzat Y. | 2:0 (6:1, 6:2) | detalhes | 16.04.2025 | ||
| Quarter-finals | Kaji H. | Liang E. S. | 0:2 (1:6, 2:6) | detalhes | 11.04.2025 | ||
| 1/8-finals | Kaji H. | Zhu L. | 2:1 (3:6, 6:2, 6:4) | detalhes | 10.04.2025 | ||
| 1/16-finals | Kaji H. | Hosogi S. | 2:0 (6:1, 6:2) | detalhes | 09.04.2025 | ||
| 1/8-finals | Kaji H. | Curmi F. | 0:2 (66:7, 1:6) | detalhes | 02.04.2025 | ||
| 1/16-finals | Hruncakova V. | Kaji H. | 1:2 (1:6, 6:3, 3:6) | detalhes | 01.04.2025 | ||
| Final | Sakatsume H. | Kaji H. | 0:2 (62:7, 3:6) | detalhes | 23.03.2025 | ||
| Semi-finals | Kaji H. | Saito S. | 2:1 (5:7, 6:2, 6:3) | detalhes | 22.03.2025 | ||
| Quarter-finals | Kaji H. | Kuramochi M. | 2:0 (6:2, 6:1) | detalhes | 21.03.2025 | ||
| 1/8-finals | Kaji H. | Giavara H. | 2:0 (6:2, 6:2) | detalhes | 20.03.2025 | ||
| Semi-finals | Kaji H./Tsutsumi K. | Dang Y./You X. | 1:2 (4:6, 6:4, 4:10) | detalhes | 28.11.2025 | ||
| Quarter-finals | Arakawa N./Hosoki Y. | Kaji H./Tsutsumi K. | 0:2 (3:6, 5:7) | detalhes | 28.11.2025 | ||
| 1/8-finals | Aikawa M./Miyamoto A. | Kaji H./Tsutsumi K. | 1:2 (6:4, 2:6, 6:10) | detalhes | 27.11.2025 | ||