 Japan: W75 Kurume - Doubles - Main |
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| 1/8-finals | Kawaguchi N./Morisaki K. | Aikawa M./Boulais I. | 1:2 (6:4, 2:6, 7:10) | details | 15.05.2024 |
| Japan: W75 Fukuoka - Doubles - Main |
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| Quarter-finals | Bhosale R./Hourigan P. M. | Kawaguchi N./Morisaki K. | 2:1 (7:5, 3:6, 10:7) | details | 09.05.2024 |
| 1/8-finals | Kuramochi M./Osborne A. | Kawaguchi N./Morisaki K. | 0:2 (0:6, 4:6) | details | 07.05.2024 |
| Japan: W100 Gifu - Doubles - Main |
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| 1/8-finals | Kawaguchi N./Park S. | Bhosale R./Grey S. B. | 1:2 (7:5, 0:6, 6:10) | details | 02.05.2024 |
| Japan: W35 Osaka - Doubles - Main |
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| 1/8-finals | Kawaguchi N./Naito Y. | Abe H./Hosoki Y. | 1:2 (6:4, 3:6, 8:10) | details | 09.04.2024 |
| Japan: W50 Kashiwa - Doubles - Main |
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| 1/8-finals | Brooks M./Chong E. | Kawaguchi N./Naito Y. | 2:1 (5:7, 6:4, 11:9) | details | 02.04.2024 |
| Japan: W40 Yokohama - Doubles - Main |
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| Final | Liang E. S./Tang Q. | Ito A./Kawaguchi N. | WO. | details | 02.12.2023 |
| Semi-finals | Ito A./Kawaguchi N. | Ku Y./Wei S. | WO. | details | 01.12.2023 |
| Quarter-finals | Tikhonova A./Zaytseva K. | Ito A./Kawaguchi N. | 0:2 (4:6, 2:6) | details | 30.11.2023 |
| 1/8-finals | Kozaki F./Sato N. | Ito A./Kawaguchi N. | 0:2 (5:7, 0:6) | details | 28.11.2023 |
| Japan: W100 Takasaki 2 - Doubles - Main |
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| Quarter-finals | Kumkhum L./Plipuech P. | Chong E./Kawaguchi N. | 2:0 (6:3, 6:3) | details | 23.11.2023 |
| 1/8-finals | Kobori M./Shimizu A. | Chong E./Kawaguchi N. | 1:2 (6:2, 1:6, 4:10) | details | 22.11.2023 |
| Japan: W100 Takasaki - Doubles - Main |
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| 1/8-finals | Chong E./Kawaguchi N. | Kobori M./Shimizu A. | 0:2 (5:7, 3:6) | details | 14.11.2023 |
 Australia: W60 Playford - Doubles - Main |
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| 1/8-finals | Bolton E./Horvit M. | Kawaguchi N./Tararudee L. | 2:0 (6:4, 7:63) | details | 25.10.2023 |
| Japan: W25 Hamamatsu - Doubles - Main |
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| Final | Arakawa H./Ito A. | Abe H./Kawaguchi N. | 1:2 (6:3, 4:6, 4:10) | details | 14.10.2023 |
| Semi-finals | Imamura S./Kozaki F. | Abe H./Kawaguchi N. | 0:2 (0:6, 3:6) | details | 13.10.2023 |
| Quarter-finals | Abe H./Kawaguchi N. | Kobori M./Shimizu A. | 2:0 (7:67, 6:4) | details | 12.10.2023 |
| 1/8-finals | Abe H./Kawaguchi N. | Nakashima M./Shibata S. | 2:0 (6:3, 7:5) | details | 11.10.2023 |
| Japan: Tokyo - Doubles - Main |
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| 1/8-finals | Kato M./Kichenok N. | Kawaguchi N./Naito Y. | 2:0 (7:62, 6:1) | details | 27.09.2023 |
| Japan: W25 Kyoto - Doubles - Main |
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| 1/8-finals | Abe H./Nagata A. | Kawaguchi N./Morisaki K. | 2:0 (7:5, 6:3) | details | 20.09.2023 |
| Japan: Osaka - Doubles - Main |
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| Quarter-finals | Friedsam A-L./Kichenok N. | Kawaguchi N./Kobori M. | 2:0 (6:4, 6:3) | details | 14.09.2023 |
| 1/8-finals | Golubic V./Udvardy P. | Kawaguchi N./Kobori M. | 0:2 (4:6, 4:6) | details | 11.09.2023 |
| Japan: W100 Tokyo - Doubles - Main |
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| Semi-finals | Eala A./Kawaguchi N. | Barnett A./Nicholls O. | 1:2 (0:6, 7:5, 6:10) | details | 08.09.2023 |
| Quarter-finals | Eala A./Kawaguchi N. | Dzalamidze N./Lansere S. | 2:1 (4:6, 6:3, 12:10) | details | 07.09.2023 |
| 1/8-finals | Eala A./Kawaguchi N. | Kumkhum L./Plipuech P. | 2:0 (6:4, 7:63) | details | 05.09.2023 |
 Hong Kong: W40 Hong Kong 2 - Doubles - Main |
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| 1/8-finals | Ito A./Sema E. | Hayashi E./Kawaguchi N. | 2:0 (6:2, 6:4) | details | 22.08.2023 |
| Hong Kong: W40 Hong Kong - Doubles - Main |
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| Final | Kawaguchi N./Morisaki K. | Chong E./Wong Hong Yi C. | 0:2 (5:7, 4:6) | details | 08.07.2023 |
| Semi-finals | Liang E. S./Ma Y. | Kawaguchi N./Morisaki K. | 0:2 (5:7, 4:6) | details | 07.07.2023 |
| Quarter-finals | Kawaguchi N./Morisaki K. | Che S. Y./Ng M. | 2:0 (6:1, 6:1) | details | 06.07.2023 |
| 1/8-finals | Kawaguchi N./Morisaki K. | Frahn M./Lau J. | 2:0 (6:0, 6:0) | details | 04.07.2023 |