Venus Williams and Reilly Opelka take on Karolina Muchova and Andrey Rublev at 12:30 p.m. ET today, Aug. 19. The first day of the US Open Mixed Doubles tournament is airing on the ESPN+ streaming service. Right now, ESPN+ costs $11.99/month for new subscribers.

Big names fell early and unexpected teams broke through to steal the spotlight on Day 1 of U.S. Open mixed doubles play, headlining an electric opener packed with upsets and standout performances.

Follow scores and live text updates from the US Open mixed doubles as Jack Draper and Jessica Pegula take on Mirra Andreeva and Daniil Medvedev in the quarter-finals.

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

The first week of the 2025 US Open gets started on Monday, Aug. 18 and the week will also feature the new look Mixed Doubles format.

Khaite is a new addition to Williams's US Open collection, joining K-Swiss, Ralph Lauren, Adidas, and EleVen, her own activewear line. Lacoste, on the other hand, has dressed the A-lister before, including at the 2025 Met Gala.

The first week of the US Open is set to see temperatures around 25 to 27C, with thunderstorm warnings expected on the second day of the tournament. Forecasters are expecting warm, sunny weather for the majority of the competition, but temperatures are unlikely to be high enough to be unplayable.