The No. 1-ranked Sinner, the defending champion in singles at Flushing Meadows, was supposed to compete in mixed doubles with Katerina Siniakova.

The entire mixed doubles tournament will be played on the U.S. Open's stadium courts: Louis Armstrong Stadium and Arthur Ashe Stadium. Both the semifinal and final matches will take place under the lights on Wednesday at Arthur Ashe for an unparalleled tennis scene.

Carlos Alcaraz of Spain and Jannik Sinner of Italy during the Men's Singles Final match on day twelve of the Cincinnati Open 2025 at Lindner Family Tennis Center on August 18, 2025 in Mason, Ohio. The ATP Tour then released quotes from Sinner in which he spoke about the U.S. Open.

The US Open Mixed Doubles Championship finally introduced the revamp of the mixed doubles category on Tuesday. Thereby, stars collided and a new format was exhibited. However, can the tournament be declared a hit?

Grand Slam singles champions such as Jannik Sinner, Carlos Alcaraz, Iga Swiatek and Madison Keys will be playing for a little extra money — OK, a lot of extra money, by any standard: $1 million to the winning duo — and trying to get their hands on a trophy in the U.S. Open’s overhauled mixed doubles tournament.

In the U.S. Open, the format is being redesigned as a popularity contest engineered to generate buzz.