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.

While Jack Draper and Jessica Pegula may have said all of four words to each other before teaming up for this week’s U.S. Open mixed doubles tournament, the two already sound like an “old married couple.

Defending champions Sara Errani and Andrea Vavassori moved into Wednesday's semi-finals of the US Open's new look mixed doubles event after winning their last-16 and quarter-final matches without dropping a set.

The semifinals of the new-look U.S. Open mixed doubles championship are set, with the title being decided tomorrow. The teams of Iga Świątek/Casper Ruud and Sara Errani/Andrea Vavassori advanced in the early wave, and they will be joined by Danielle Collins/Christian Harrison and Jessica Pegula/Jack Draper.