With the revamped US Open mixed doubles starting on Tuesday, BBC Sport looks at the positives and negatives of the controversial change.

The winning duo will take home a $1 million prize, which is higher than most prize purses for mixed doubles major tournaments. The 16 teams will play over two days. The first round and quarterfinals take place on Tuesday inside the main show courts at the USTA National Tennis Center. The semifinals and championship match will be on Wednesday night.

Grand Slam singles champions such as Jannik Sinner, Carlos Alcaraz, Iga Swiatek and Madison Keys will be playing for extra money — $1 million to the winning duo — and trying to get their hands on a trophy in the U.

Here's what to know about the 2025 U.S. Open Tennis Championships at the Billie Jean King National Tennis Center in Flushing, New York.

Comment: For all the star-studded pairs and $1m winning purse, the new-look mixed doubles in New York lacks Grand Slam prestige and has largely disregarded doubles specialists, as Kieran Jackson expla

Williams is a longtime resident of Palm Beach Gardens while Opelka has lived in the Delray Beach/Boca Raton area since he was a teenager.

The 2025 US Open will start with a new stand-alone mixed doubles championship on 19-20 August. Sixteen pairs will compete for the title, with seven teams receiving direct entry based on their combined singles ranking. The rest got wildcards.