Sara Errani and Andrea Vavassori retained their US Open mixed doubles title on Wednesday (Thursday in Manila), beating Iga Swiatek and Casper Ruud to claim the $1 million top prize in the new-look competition that kicked off action at the last Grand Slam of the year.

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.