Aryna Sabalenka stormed into the US Open third round with a 6-1, 6-1 win over Polina Iatcenko in just 53 minutes. Jessica Pegula also advanced quickly, while rain caused major delays across New York. Despite disrupted schedules, Alex de Minaur, Ben Shelton, Daniil Medvedev and Karolina Muchova progressed. The first round was finally completed Wednesday night.