Kaho Osawa

In 2019, Osawa represented Japan at the World Junior Championships in Kazan, Russia. Partnering with Hinata Suzuki, she secured a bronze medal in girls' doubles and contributed to Japan's bronze medal in the mixed team event.^[3] Later that year, the duo captured the India Junior International, a BWF Junior International Grand Prix tournament.^[4]

Osawa contested her first senior finals in 2022, finishing as runner-up at the India International (I) with Miho Kayama and the Maldives International with Kaoru Sugiyama.^[5][6] She claimed her maiden senior international title at the 2023 Vietnam International, partnering with Asuka Sugiyama.^[7]

In 2024, Osawa formed a partnership with Mai Tanabe. The pair won four BWF International Challenge/Series titles between 2024 and early 2025: the 2024 Kazakhstan International, 2024 Réunion Open, 2024 Mauritius International, and the 2025 Mexican International.^{[8][9][10][11]}

On the 2025 BWF World Tour, Osawa and Tanabe were runners-up at three Super 300 tournaments: the Canada Open, the Macau Open, and the Syed Modi International.^{[12][13][14][15]} The pair also made their Super 750 debut at the Japan Open, where they were eliminated in the second round by the former world No. 1 pair of Baek Ha-na and Lee So-hee.^[16] Following these performances, Osawa reached a career-high ranking of world No. 27 on 2 December 2025.

Osawa and Tanabe began the 2026 season at the Malaysia Open, making their Super 1000 debut. The pair reached the quarterfinals after defeating the third-seeded Korean duo, Kim Hye-jeong and Kong Hee-yong.^[17][18] Following this performance, Osawa achieved a career-high world ranking of 17 on 17 March.

Girls' doubles

Year	Venue	Partner	Opponent	Score	Result	Ref
2019	Kazan Gymnastics Center, Kazan, Russia	Hinata Suzuki	Lin Fangling Zhou Xinru	7–21, 21–16, 17–21	Bronze	[3]

The BWF World Tour, which was announced on 19 March 2017 and implemented in 2018,^[19] is a series of elite badminton tournaments sanctioned by the Badminton World Federation (BWF). The BWF World Tours are divided into levels of World Tour Finals, Super 1000, Super 750, Super 500, Super 300 (part of the HSBC World Tour), and the BWF Tour Super 100.^[20]

Women's doubles

Year	Tournament	Level	Partner	Opponent	Score	Result	Ref
2025	Canada Open	Super 300	Mai Tanabe	Benyapa Aimsaard Nuntakarn Aimsaard	12–21, 18–21	Runner-up	[12][13]
2025	Macau Open	Super 300	Mai Tanabe	Hsieh Pei-shan Hung En-tzu	18–21, 12–21	Runner-up	[14]
2025	Syed Modi International	Super 300	Mai Tanabe	Gayatri Gopichand Treesa Jolly	21–17, 13–21, 15–21	Runner-up	[15]

Women's doubles

Year	Tournament	Partner	Opponent	Score	Result	Ref
2022 (I)	India International	Miho Kayama	Chisato Hoshi Miyu Takahashi	18–21, 21–19, 16–21	Runner-up	[5][21]
2022	Maldives International	Kaoru Sugiyama	Chisato Hoshi Miyu Takahashi	16–21, 15–21	Runner-up	[22][6]
2023	Vietnam International	Asuka Sugiyama	Tsukiko Yasaki Sorano Yoshikawa	19–21, 21–18, 21–10	Winner	[7]
2024	Kazakhstan International	Mai Tanabe	Polina Buhrova Yevheniia Kantemyr	Walkover	Winner	[8]
2024	Réunion Open	Mai Tanabe	Julia Meyer Leona Michalski	21–8, 21–8	Winner	[9]
2024	Mauritius International	Mai Tanabe	Hina Shiwa Chisa Yamafuji	21–14, 21–17	Winner	[10]
2025	Mexican International	Mai Tanabe	Mao Hatasue Miku Sugiyama	15–11, 15–8	Winner	[11]

  BWF International Challenge tournament

  BWF International Series tournament

Girls' doubles

Year	Tournament	Partner	Opponent	Score	Result	Ref
2019	India Junior International	Hinata Suzuki	Pornpicha Choeikeewong Pornnicha Suwatnodom	13–21, 21–15, 21–14	Winner	[4]

  BWF Junior International Grand Prix tournament

Key

Girls' doubles

Women's doubles