(Reuters) -Nine of the world's top-10 men and nine of the top-10 women have officially entered into the U.S. Open's revamped mixed doubles event, tournament organisers said on Tuesday, with former singles champions Carlos Alcaraz and Emma Raducanu teaming up.
The competition, which will take place a week before the singles main draw during its "Fan Week", will award $1 million in prize money to the winning team.
