Carlos Alcaraz and Emma Raducanu face off against Jessica Pegula and Jack Draper in the Mixed Doubles first round today, Aug. 19, at 2 p.m. ET. The first day of the US Open Mixed Doubles tournament is airing on the ESPN+ streaming service.

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.

The Russian pairing of Mirra Andreeva and Daniil Medvedev came out on top against the Serbian duo of Olga Danilovic and Novak Djokovic. Venus Williams has won multiple titles in women's singles and doubles at the US Open during her career, although a mixed doubles title has remained elusive.