Katherine Hui (Chinese: 辉婧怡; pinyin: Huī Jìngyí; born 29 January 2005) is an American tennis player. She became the girls' singles champion at the 2023 US Open.
Early and personal life From San Diego, California, Hui graduated from Santa Fe Christian High School in 2023 and committed to Stanford University. Her parents, Yimei and Yan, were born in China before moving to the United States.
Juniors Hui qualified for the prestigious junior tournament Les Petits As in Tarbes in January 2019. At the tournament, she lost to eventual champion Linda Fruhvirtová in the quarterfinals. Hui and her partner, Kayla Cross from Canada, were the runners-up in doubles.
In 2022, at the Billie Jean King Girls’ 16s and 18s National Championships, Hui reached the semifinals. In 2023, at the Billie Jean King Girls’ 16s and 18s National Championships, she reached the final but was defeated in three sets by Clervie Ngounoue.
Awarded a wildcard into the girls' singles at the 2023 US Open, Hui won the tournament by defeating Tereza Valentová in straight sets. She did not lose a set throughout the tournament.
Professional career Awarded a wildcard for the qualifying competition to the 2023 US Open women's singles, Hui lost in the first round to Eugenie Bouchard.
She received a wildcard for the 2024 San Diego Open for her WTA Tour main-draw debut, but lost in the first round to seventh seed Donna Vekić.
Junior Grand Slam finals
Singles: 1 (1 title) ResultYearTournamentSurfaceOpponentScoreWin2023US OpenHard Tereza Valentová6–4, 6–4
ITF Circuit finals Doubles: 4 (4 titles) Legend W50 tournaments W15 tournaments ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin 1–0 Jun 2023ITF San Diego, United StatesW15 Hard Sara Daavettila Malaika Rapolu Anita Sahdiieva 7–6(4), 6–4Win 2–0 Jul 2023ITF Irvine, United StatesW15 Hard Haley Giavara Eryn Cayetano Isabella Chiv 6–2, 6–4Win 3–0 Aug 2026ITF Badalona, SpainW15 Clay Anne Christine Lutkemeyer Sonia Cassani Gabriela Paun 6–2, 6–3Win 4–0 Sep 2026Berkeley Tennis Club Challenge, United StatesW50 Hard Sofía Cabezas Domínguez Reina Goto Evialina Laskevich 3–6, 6–4, [10–7]
References