Carlos Alcaraz begins his US Open title defense against Roman Safiullin, and with Jannik Sinner injured, Alcaraz enters as the betting favorite.

The Williams sisters will team up for doubles at the US Open, an event they have won twice before.

Five-time US Open champion Roger Federer played an exhibition match at Arthur Ashe Stadium against longtime rival Andy Roddick.

Karolina Muchova and Jakub Mensik defeated Belinda Bencic and Flavio Cobolli in the mixed doubles final.

Serena Williams and Carlos Alcaraz lost to Belinda Bencic and Flavio Cobolli in the mixed doubles quarterfinals.

Stan Wawrinka, the 2016 US Open champion, was granted a wild card a day after posting what seemed to be a goodbye message to the tournament.

Nick Kyrgios announced he tested positive for cocaine, raising questions about his career and a potential ban.

Elina Svitolina and Gael Monfils became the first team into the mixed doubles semifinals by edging Katerina Siniakova and Henry Patten.