| Katherine Hui | |
| Birth Date: | 29 January 2005 |
| Birth Place: | San Diego, California |
| Careerprizemoney: | $46,465 |
| Singlesrecord: | 30–32 |
| Singlestitles: | 0 |
| Highestsinglesranking: | No. 855 (20 November 2023) |
| Usopenresult: | Q1 (2023) |
| Usopenjuniorresult: | W (2023) --> |
| Doublesrecord: | 17–21 |
| Doublestitles: | 0 |
| Highestdoublesranking: | No. 597 (17 July 2023) |
| Usopendoublesjuniorresult: | QF (2022) --> |
| Updated: | 4 November 2024 |
Katherine Hui (born 29 January 2005) is an American tennis player. She became the girls' singles champion at the 2023 US Open.[1] [2]
From San Diego, California, Hui graduated from Santa Fe Christian High School in 2023 and committed to Stanford University.[3] Her parents, Yimei and Yan, were born in China before moving to the United States.[4]
Hui qualified for the prestigious junior tournament Les Petits As in Tarbes in January 2019.[5] At the tournament, she lost to eventual champion Linda Fruhvirtová in the quarterfinals.[6] 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.[7] 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.[8]
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.[9]
Awarded a wildcard for the qualifying competition to the 2023 US Open women's singles, Hui lost in the first round to Eugenie Bouchard.[10]
She received a wildcard for the 2024 San Diego Open for her WTA Tour main-draw debut[11] but lost in the first round to seventh seed Donna Vekić.[12]
| Result | Year | width=120 | Tournament | Surface | width=160 | Opponent | width=100 | Score |
|---|---|---|---|---|---|---|---|---|
| Win | 2023 | US Open | Hard |  Tereza Valentová | 6–4, 6–4 |