2022 In 2022, Miyazaki primarily competed on the international junior circuit. In June, she earned the runner-up position at the Malaysia Junior International. Miyazaki finished the year by winning her first senior-level tournament, capturing the women's singles title at the
Slovenia Future Series in November. By the end of the year, she achieved the world #1 position in the
BWF World Junior Ranking. On the International Challenge circuit, Miyazaki won the singles title at the
Saipan International in June, She also advanced to the second round of the
Japan Masters (Super 500) and the
Syed Modi International (Super 300). Miyazaki rose from a world ranking of No. 431 at the start of 2023 to a career-high No. 39 by the end of the year.
2024 In 2024, Miyazaki joined the Japanese A National Team. In March, she won her first Super 300 title at the
Orléans Masters, defeating compatriot
Hina Akechi in the final. The following week, she reached the
Swiss Open semi-finals, defeating former world champion
P. V. Sindhu in the second round before losing to Olympic champion
Carolina Marín. From April to May, she contributed to Japan’s bronze medal at
Uber Cup in Chengdu, China. In September, Miyazaki reached her first Super 1000 final at the
China Open, finishing as runner-up to
Wang Zhiyi. She also consistently reached the semi-finals at five other tournaments: the
Hong Kong Open (Super 500),
Macau Open (Super 300),
Arctic Open (Super 500),
Korea Masters (Super 300), and the
China Masters (Super 750). Domestically, Miyazaki won the team and singles titles at the
Inter-High School Championships in August. In December, she claimed the women's singles title at the
All Japan Badminton Championships, defeating
Natsuki Nidaira in the final, becoming the fourth high school student to win the national championship. She concluded the year with a career-high world ranking of No. 12.
2025 In 2025, Tomoka Miyazaki joined the Japanese national team and turned professional, joining
ACT Saikyo in April upon high school graduation. She reached a career-high world ranking of No. 6 on 10 June. On the BWF World Tour, she won her first title of the year at the
Taipei Open (Super 300) in May and advanced to the semi-finals of the
India Open (Super 750) and the
Thailand Open (Super 500). She also reached the
All England Open (Super 1000) quarter-finals, losing to compatriot Akane Yamaguchi. In team competitions, Miyazaki contributed to Japan's bronze medals at the
Asia Mixed Team Championships in February and the
Sudirman Cup in April–May.
2026 Miyazaki opened the season with a second-round exit at the
Malaysia Open. In May, Miyazaki represented Japan at the
Uber Cup in
Horsens, where she contributed to the team securing a bronze medal. == Awards ==