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Carlos Alcaraz celebrated his 2025 US Open triumph in true champion style, partying late into the night at Chez Margaux, one of New York City's most exclusive celebrity hangouts, on Sunday, Sept. 7.
The 22-year-old tennis star, who defeated Jannik Sinner in four sets to claim his second US Open title and sixth Grand Slam overall, arrived at the members-only venue after 10 p.m. with a group of about 30 close friends, according to a source who spoke exclusively.
"Carlos was in a great mood, smiling and talking to everyone," the insider said. "He didn't drink himself, but his friends were definitely celebrating hard."
Earlier in the evening, Alcaraz was seen dousing his team with champagne in the Arthur Ashe Stadium locker room, a tradition after a major win.
At Chez Margaux, the party was hosted by Raising Cane's, and guests included a star-studded lineup: Jamie Foxx, Jessica Alba, Lupita Nyong'o, Adrien Brody, Jon Hamm, Kevin Hart, and Lenny Kravitz. Rap superstar Cardi B and singer The Kid Laroi performed surprise sets for the crowd.
Alcaraz was spotted mingling with Raising Cane's founder Todd Graves and celebrity chef Jean-Georges Vongerichten, even pausing to snap photos with both. "He was really gracious with everyone and happy to meet fans," said another attendee.
The tennis phenom was also photographed chatting with models Brianna Bardhi and Tika Camaj. Bardhi later posted a smiling selfie with Alcaraz on Instagram, along with clips showing tables stacked with colorful candy and desserts.
For the night out, Alcaraz kept it casual in a plain white T-shirt and black pants. Cameras later captured him leaving the venue in the early hours, hopping into an SUV with friends and a mystery woman.
Reflecting on his victory, one partygoer summed up the night: "Carlos seemed like he was running purely on adrenaline. Winning the US Open clearly gives you energy to keep going all night."
While rumors swirled about his dating life, Alcaraz has previously stated he's single. "No, I am single. I am looking for someone," he told The Sunday Times in 2024, explaining that constant travel makes relationships difficult.
