Ku Yeon-woo
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Ku Yeon-woo is a South Korean tennis player. She has a career-high singles ranking of world No. 172, achieved on 22 June 2026, and a best doubles ranking by the WTA of No. 372, reached on 6 October 20
Ku at the 2026 Wimbledon Championships
Claire Liu
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Claire Liu is an American professional tennis player. On 30 January 2023, she reached her career-high singles ranking of world No. 52.
Ku Yeon-woo
…current No. 1 Korean singles player. Ku made her WTA Tour main-draw singles debut at the 2023 Korea Open as a qualifier, losing in the first round to Claire Liu. She received a wildcard entry into the main draw at the 2025 Korea Open, but again lost in the first round, this time to Loïs Boisson…
Liu at the 2026 US Open