Select tournament type
| Semi-finals | Kitahara Y. | Subasic A. | 0:2 (3:6, 68:7) | details | 14.03.2026 | ||
| Quarter-finals | Danilova O. | Kitahara Y. | 1:2 (2:6, 6:4, 5:7) | details | 13.03.2026 | ||
| 1/8-finals | Shibata S. | Kitahara Y. | 1:2 (6:4, 0:6, 3:6) | details | 11.03.2026 | ||
| 1/16-finals | Shah M. | Kitahara Y. | 0:2 (2:6, 1:6) | details | 11.03.2026 | ||
| 1/16-finals | Micic E. | Kitahara Y. | 2:0 (6:2, 6:1) | details | 03.03.2026 | ||
| 1/16-finals | Kitahara Y. | Ishii S. | 1:2 (610:7, 6:3, 2:6) | details | 24.02.2026 | ||
| 1/16-finals | Goto R. | Kitahara Y. | 2:1 (6:3, 2:6, 6:4) | details | 13.01.2026 | ||
| Quarter-finals | Kitahara Y. | Sema E. | 0:2 (1:6, 5:7) | details | 09.01.2026 | ||
| 1/8-finals | Kitahara Y. | Gennaro C. | WO. | details | 08.01.2026 | ||
| 1/16-finals | Kitahara Y. | Carpentier N. | 2:0 (6:4, 6:0) | details | 07.01.2026 | ||
| 1/8-finals | Kitahara Y. | Fontenel C. | 0:2 (64:7, 2:6) | details | 01.01.2026 | ||
| 1/16-finals | Kitahara Y. | Husar S. | 2:0 (6:1, 6:0) | details | 31.12.2025 | ||
| Quarter-finals | Goto R. | Kitahara Y. | 2:0 (6:3, 7:67) | details | 18.12.2025 | ||
| 1/8-finals | Rokusek S. | Kitahara Y. | 0:2 (3:6, 2:6) | details | 18.12.2025 | ||
| 1/16-finals | Cui A. | Kitahara Y. | 0:2 (2:6, 3:6) | details | 16.12.2025 | ||
| Quarter-finals | Kitahara Y. | Webb S. | 0:2 (2:6, 4:6) | details | 12.12.2025 | ||
| 1/8-finals | Kitahara Y. | Aulia A. | 2:0 (6:2, 6:2) | details | 11.12.2025 | ||
| 1/16-finals | Kitahara Y. | Shah M. | 2:0 (6:3, 6:2) | details | 09.12.2025 | ||
| 1/16-finals | Zhang Y. | Kitahara Y. | 2:0 (7:5, 6:3) | details | 26.11.2025 | ||
| 1/16-finals | Liang E. S. | Kitahara Y. | 2:0 (6:1, 6:3) | details | 18.11.2025 | ||
| Semi-finals | Kitahara Y. | Tikhonova A. | 0:2 (1:6, 0:6) | details | 25.10.2025 | ||
| Quarter-finals | Balus I. | Kitahara Y. | 1:2 (6:2, 4:6, 5:7) | details | 24.10.2025 | ||
| 1/8-finals | Kitahara Y. | Rajecki A. | 2:1 (2:6, 6:4, 6:4) | details | 23.10.2025 | ||
| 1/16-finals | Kitahara Y. | Lacasse R. | 2:0 (6:1, 6:4) | details | 21.10.2025 | ||
| 1/16-finals | Kitahara Y. | Collins K. | 1:2 (3:6, 7:5, 3:6) | details | 15.10.2025 | ||
| 1/16-finals | Chanta A. | Kitahara Y. | 2:0 (7:5, 6:3) | details | 03.09.2025 | ||
| 1/8-finals | Cheuk S. Y. | Kitahara Y. | 2:0 (6:2, 6:0) | details | 14.08.2025 | ||
| 1/16-finals | Korhonen C. | Kitahara Y. | 0:2 (3:6, 0:6) | details | 12.08.2025 | ||
| Semi-finals | Kitahara Y. | Guillen G. I. | 0:2 (1:6, 2:6) | details | 09.08.2025 | ||
| Quarter-finals | Arakawa N./Kitahara Y. | Rokusek S./Tran D. | 0:2 (3:6, 1:6) | details | 12.03.2026 | ||
| 1/8-finals | Arakawa N./Kitahara Y. | Dunn E./Shibata S. | 2:1 (0:6, 7:63, 10:7) | details | 10.03.2026 | ||
| 1/8-finals | Arakawa N./Rokusek S. | Colling S./Kitahara Y. | 2:0 (6:0, 6:3) | details | 03.03.2026 | ||
| 1/8-finals | Arakawa N./Kitahara Y. | da Silva Fick G./McGiffin T. | 0:2 (2:6, 2:6) | details | 24.02.2026 | ||
| 1/8-finals | Kitahara Y./Sema E. | Huang Yujia/Zhang Y. | 0:2 (4:6, 4:6) | details | 14.01.2026 | ||
| Final | Kitahara Y./Sema E. | Toma M./Villet M. | 2:0 (6:1, 6:3) | details | 03.01.2026 | ||
| Semi-finals | Kitahara Y./Sema E. | Ezzat Y./Jialin T. | 2:0 (6:4, 7:64) | details | 02.01.2026 | ||
| Quarter-finals | Kitahara Y./Sema E. | Choi M. Y./Choi S. Y. | 2:0 (6:4, 7:5) | details | 01.01.2026 | ||
| 1/8-finals | Kitahara Y./Sema E. | Gharbi E./Saafi R. | 2:0 (6:3, 6:2) | details | 30.12.2025 | ||
| Semi-finals | Hosoki Y./Kitahara Y. | Houghton I./Tse E. | 1:2 (6:2, 2:6, 6:10) | details | 19.12.2025 | ||
| Quarter-finals | Gale L./Oliver K. | Hosoki Y./Kitahara Y. | 0:2 (2:6, 3:6) | details | 18.12.2025 | ||
| 1/8-finals | Hosoki Y./Kitahara Y. | Mushika Mio/Yuan C. | 2:1 (5:7, 7:64, 10:7) | details | 17.12.2025 | ||
| 1/8-finals | Goto R./Shao Y. | Kitahara Y./Russell T. | 2:0 (6:2, 6:2) | details | 09.12.2025 | ||
| 1/8-finals | Katsumi N./Yoshioka K. | Kinoshita H./Kitahara Y. | 2:0 (6:4, 6:2) | details | 19.11.2025 | ||
| 1/8-finals | Cross K./Hruncakova V. | Kitahara Y./Koshiishi A. | 2:0 (6:0, 6:1) | details | 22.10.2025 | ||
| Quarter-finals | Kitahara Y./Vlasselaer C. | Lacasse R./Vagramov A. | 0:2 (3:6, 1:6) | details | 16.10.2025 | ||
| 1/8-finals | Kitahara Y./Vlasselaer C. | Bruneau R./Iacoban M. | 2:0 (7:60, 6:1) | details | 14.10.2025 | ||
| 1/8-finals | Chanta A./Naklo T. | Jang G./Kitahara Y. | 2:0 (6:0, 7:5) | details | 02.09.2025 | ||
| Quarter-finals | Kitahara Y./Ozeki M. | Lopez P./Vaissaud D. | 1:2 (5:7, 7:5, 5:10) | details | 14.08.2025 | ||
| 1/8-finals | Kitahara Y./Ozeki M. | Korhonen C./Selvaraj N. | 2:1 (61:7, 6:2, 10:4) | details | 14.08.2025 | ||
| 1/8-finals | Kitahara Y./Ozeki M. | Compuesto B./McKenzie N. | CAN. | details | 13.08.2025 | ||