Select tournament type
| 1/16-finals | Moore T. | Kajitani R. | 2:0 (6:4, 6:1) | details | 16.05.2018 | ||
| 1/8-finals | Higashitani N./Kajitani R. | Sato H./Yoshioka K. | 0:2 (65:7, 2:6) | details | 12.06.2024 | ||
| 1/8-finals | Ayukawa M./Omae A. | Higashitani N./Kajitani R. | 2:0 (6:2, 6:0) | details | 05.06.2024 | ||
| 1/8-finals | Kajitani R./Samir S. | Quevedo K./Yamazaki I. | 0:2 (1:6, 4:6) | details | 30.04.2024 | ||
| 1/8-finals | Kajitani R./Lemaitre T. | Mansouri Y./Milovanovic E. | 0:2 (1:6, 68:7) | details | 23.04.2024 | ||
| 1/8-finals | Kajitani R./Yamazaki I. | Koyama K./Numano N. | 0:2 (1:6, 5:7) | details | 20.03.2024 | ||
| 1/8-finals | Kajitani R./Wu Ho C. | Sukhotina A./Xun F. Y. | 0:2 (1:6, 3:6) | details | 06.03.2024 | ||
| 1/8-finals | Xun F. Y./Zhang Y. | Cheapchandej P./Kajitani R. | 2:1 (6:1, 1:6, 10:6) | details | 28.02.2024 | ||
| 1/8-finals | Lee Y./Lin F. A. | Hanatani N./Kajitani R. | 2:0 (6:1, 6:3) | details | 20.02.2024 | ||
| Quarter-finals | Arakawa H./Ito A. | Kajitani R./Sato H. | 2:1 (6:2, 4:6, 14:12) | details | 12.10.2023 | ||
| 1/8-finals | Hosonuma C./Kanai A. | Kajitani R./Sato H. | 1:2 (4:6, 6:3, 6:10) | details | 10.10.2023 | ||
| 1/8-finals | Kajitani R./Matsumoto A. | Hosoki Y./Hsieh Y. | 0:2 (2:6, 4:6) | details | 04.10.2023 | ||
| Quarter-finals | Kim D./Kim N. | Abe H./Kajitani R. | 2:0 (6:3, 6:3) | details | 07.09.2023 | ||
| 1/8-finals | Abe H./Kajitani R. | Jang S. H./Lim E. | 2:0 (6:2, 6:2) | details | 05.09.2023 | ||
| Semi-finals | Kim D. H./Tran D. | Kajitani R./Wu Ho C. | 2:1 (2:6, 7:64, 10:3) | details | 01.09.2023 | ||
| Quarter-finals | Kajitani R./Wu Ho C. | Kim Eunchae/Wi H. W. | 2:0 (7:61, 6:4) | details | 31.08.2023 | ||
| 1/8-finals | Kajitani R./Wu Ho C. | Sato H./Zhang J. | 2:1 (6:4, 3:6, 10:6) | details | 29.08.2023 | ||
| Quarter-finals | Ainitdinova G./Yang Y. | Kajitani R./Kuramochi M. | 2:0 (6:4, 6:1) | details | 24.08.2023 | ||
| 1/8-finals | Ruamrak P./Sae-Eung J. | Kajitani R./Kuramochi M. | 0:2 (3:6, 2:6) | details | 23.08.2023 | ||
| Quarter-finals | Kawagishi N./Yoshioka K. | Kajitani R./Nayuki S. | 2:0 (6:0, 6:1) | details | 10.08.2023 | ||
| 1/8-finals | Kajitani R./Nayuki S. | Hagi E./Robertson A. | 2:0 (6:2, 6:3) | details | 08.08.2023 | ||
| 1/8-finals | Kajitani R./Matsumoto A. | Chiu B./Yodpetch K. | 0:2 (1:6, 2:6) | details | 01.08.2023 | ||
| Quarter-finals | Han J./Mushika Mao | Kajitani R./Matsumoto A. | 2:0 (6:1, 6:2) | details | 27.07.2023 | ||
| 1/8-finals | Kajitani R./Matsumoto A. | Jang G./Ogata H. | 2:0 (6:4, 6:3) | details | 27.07.2023 | ||
| Quarter-finals | Matsuda R./Mushika Mao | Kajitani R./Kaneko S. | 2:0 (6:2, 6:1) | details | 16.06.2023 | ||
| 1/8-finals | Ozeki A./Shigeta M. | Kajitani R./Kaneko S. | 0:2 (4:6, 4:6) | details | 14.06.2023 | ||
| Quarter-finals | Kajitani R./Yoshioka K. | Hosoki Y./Shimizu E. | 0:2 (3:6, 2:6) | details | 26.05.2023 | ||
| 1/8-finals | Okuwaki R./Sato H. | Kajitani R./Yoshioka K. | 1:2 (4:6, 7:62, 2:10) | details | 25.05.2023 | ||
| 1/8-finals | Ito A./Sema E. | Inoue A./Kajitani R. | 2:0 (6:1, 6:4) | details | 16.05.2023 | ||
| 1/8-finals | Inoue A./Ozeki M. | Kajitani R./Matsumoto A. | 2:1 (7:5, 2:6, 10:8) | details | 27.04.2023 | ||
| 1/8-finals | Hosoki Y./Lee G. S. | Hosonuma C./Kajitani R. | 2:0 (6:3, 6:4) | details | 22.03.2023 | ||
| 1/8-finals | Arakawa H./Hanatani N. | Hosogi S./Kajitani R. | 2:0 (6:3, 6:3) | details | 27.01.2022 | ||
| 1/8-finals | Kajitani R./Okamura K. | Chong E./Wong Hong Yi C. | 1:2 (4:6, 6:4, 4:10) | details | 12.01.2022 | ||
| 1/8-finals | Monnet C./Sebov K. | Kajitani R./Okamura K. | 2:0 (6:4, 6:4) | details | 05.01.2022 | ||
| Final | Kajitani R./Sato N. | Hayashi E./Morisaki K. | 2:1 (1:6, 6:4, 10:8) | details | 07.03.2020 | ||
| Semi-finals | Sakatsume H./Ushijima R. | Kajitani R./Sato N. | 0:2 (0:6, 3:6) | details | 06.03.2020 | ||
| Quarter-finals | Kajitani R./Sato N. | Mochizuki N./Omura Y. | 2:0 (6:0, 7:5) | details | 05.03.2020 | ||
| 1/8-finals | Uchijima M./Zhang Y. | Kajitani R./Sato N. | 1:2 (1:6, 6:1, 4:10) | details | 03.03.2020 | ||
| 1/8-finals | De Vroome I./Wang Xin. | Imanishi M./Kajitani R. | 2:0 (6:2, 6:2) | details | 19.02.2020 | ||
| 1/8-finals | Inoue M./Kang J. Q. | Kajitani R./Luangnam N. | 2:0 (6:4, 7:5) | details | 05.02.2020 | ||
| 1/8-finals | Kajitani R./Plipuech P. | Uchijima M./Zhang Y. | 0:2 (2:6, 3:6) | details | 28.01.2020 | ||