Serena Williams and Carlos Alcaraz knocked out of US Open mixed doubles in last eight

Serena Williams and Carlos Alcaraz partnered for the first time in mixed doubles at the US Open, defeating a team of doubles specialists in an earlier round before being eliminated in the quarterfinals. They lost to the pairing of Belinda Bencic and Flavio Cobolli, ending the high-profile collaboration at the last eight stage.