U.S. Open: Serena Williams, Carlos Alcaraz knocked out of mixed doubles; Djokovic, Sabalenka eliminated, too
Serena Williams getting back on the court at the U.S. Open after a four-year absence and Carlos Alcaraz returning to competitive tennis after being out the past four months with injury brought cheers and nostalgia to the Grand Slam tournament. The celebration was short-lived. After winning their debut playing together, Williams and Alcaraz got knocked…