The second semifinal between defending champions Sara Errani/Andrea Vavassori and the all-American, last-minute alternate pairing of Danielle Collins/Christian Harrison is underway, as they bid to join Świątek/Ruud in the mixed doubles finale.

U.S. Open mixed doubles champions Sara Errani and Andrea Vavassori hope they have earned respect for their event after overcoming a field packed with singles stars to successfully defend their title.T