The mixed doubles competition at this year’s US Open will be held earlier than normal in the hope of showcasing some of tennis’ biggest stars, but the decision has also prompted ire from players.

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.

Sara Errani and Andrea Vavassori have criticized the revamped U.S. Open tournament, which will let players enter based on singles ranking.

The U.S. Open mixed doubles competition will now be played before the singles main draw, the United States Tennis Association (USTA) said on Tuesday as it announced an overhaul of the category's format and an increase in prize money.