Some of the biggest stars in men's and women's tennis will take the court together at the US Open for reimagined mixed doubles competition.

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.

US OPEN action is HERE – with the freshly revamped mixed doubles underway. Venus Williams is set to feature alongside Reilly Opalenka as one of the many big names in action today. Taylor

Veteran doubles experience overcame singles stardom as defending champions Andrea Vavassori and Sara Errani reached the semi-finals at the U.S. Open's reimagined mixed doubles on Tuesday, as the event kicked off with a new format and new fans.

The U.S. Open overhauled its mixed doubles tournament in hopes of drawing the top singles players. The defending champions don’t intend to move out of the way so easily.

The tennis world was buzzing earlier this summer when news of the US Open’s new mixed doubles tournament was announced. For starters, mixed doubles—normally played during the course of the main tournament,

Swiatek - who on Monday had battled through a two-hour tussle with Jasmine Paolini to win the Cincinnati Open - looked full of energy as she and Ruud powered into Wednesday's semi-finals.

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

Jannik Sinner has withdrawn from the US Open mixed doubles event after retiring from the Cincinnati Open due to illness. Danielle Collins and Christian Harrison will replace Sinner and Katerina Siniakova in the draw.

A full breakdown of the new "reimagined" US Open Mixed Doubles event that kicks off today at the US Open in New York.

American tennis executives hope to exploit commercial possibilities but doubles stars have labelled the event “a profound injustice”