The U.S. Open's revamped mixed doubles format is a "profound injustice" that disrespects the players, reigning champions Sara Errani and Andrea Vavassori have said.

The US Open receives strong criticism following its decision to hold its mixed doubles competition as a standalone event before the start of the Slam.

The U.S. Open's plan to make its mixed doubles championship a smaller, shorter event aimed at persuading top singles players to compete was criticized Tuesday by doubles specialists who figure to get shut out of the new format.