Former World No. 1 junior earned 1st ranking point in 2022, broke into Top 200 in August 2025 and achieved career-high No. 148 in June 2026 soon after 1st ATP Tour win over Kovacevic at 2026 ATP Masters 1000 Miami.
Qualified for ATP Tour debut at 2025 ATP Masters 1000 Miami and qualified for Grand Slam main draws at 2026 Australian Open and 2026 US Open after defeating countryman and former-World No. 4 Nishikori in Q3.
Owns 44-31 Challenger record (3-0 in finals), winning titles at 2024 Yokkaichi, 2025 Cary and 2025 Yokohama, becoming 1st Japanese teenager to win 3 Challenger titles in history.
Peaked at No. 1 in juniors in May 2024 after becoming Australian Open boys’ singles champion earlier that year and partnered w/Mrva to win 2024 US Open boys’ doubles title.
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