Kateřina Siniakova advanced to the quarterfinals of the doubles competition at the US Open. Partnering with American Taylor Townsend, she defeated the Australian-American duo of Storm Hunter and Desirae Krawczyk 7:6, 6:4 on the courts in New York. In singles action, Cheng Chin-wen of China surprisingly reached the quarterfinals after qualifying. The Paris Olympic champion, who dropped out of the top 100 following elbow surgery last year, defeated former tournament winner Iga Świątek of Poland 7:5, 6:3. The result marks a significant upset at the US Open. Siniakova and Townsend will continue their bid for the title, while Świątek’s tournament run has ended unexpectedly.