Second-seeded Ash Barty needed three sets to overcome Zarina Diyas, while No. 14 seed Angelique Kerber got ousted in three sets by unseeded Kristina Mladenovic in the first round of the US Open.
Second-seeded Ash Barty needed three sets to overcome Zarina Diyas, while No. 14 seed Angelique Kerber got ousted in three sets by unseeded Kristina Mladenovic in the first round of the US Open.