Rafael Nadal headlined social media reactions to Carlos Alcaraz's US Open victory on Sunday, congratulating his fellow Spaniard on the title and his return to No. 1 in the PIF ATP Rankings.
"Congratulations @carlosalcaraz! Champion again 🏆 of the @usopen and number 1! Congratulations on all the work behind this great season 💪🏼
¡Enhorabuena @carlosalcaraz! ¡De nuevo Campeón 🏆 del @usopen y número 1!
Felicidades por todo el trabajo que hay detrás de esta gran temporada 💪🏼 pic.twitter.com/K6KTfmOwxm
Other stars who wished the Spaniard well include Rod Laver and Billie Jean King. View more social media reactions below.
Congratulations to US champ @carlosalcaraz, who would not be denied today in his enthralling rivalry with Sinner. Clocking up the majors - who can stop these two? Next stop @LaverCup - I cannot wait. 🚀
— Rod Laver (@rodlaver) September 7, 2025Cheers to @carlosalcaraz, who has captured the #USOpen men's singles title for the second time! https://t.co/0IkDXbqY1W
— Billie Jean King (@BillieJeanKing) September 7, 2025congrats 🍾 Escape from Alcaraz @carlosalcaraz on winning your 2nd @usopen and 6th slam, absolutely brilliant the whole tournament 🏟️ long.
— Brad Gilbert (@bgtennisnation) September 7, 2025En la ciudad que nunca duerme, creo que hoy @carlosalcaraz no dormirá mucho 😂🗽
Campeón del #USOpen y nuevo Nº1 del mundo. Felicidades, amigo!!!🔝🔝🔝 pic.twitter.com/JG14nIKbad
Congratulations @carlosalcaraz on a fantastic tournament and an amazing performance in the #finals 👏🏽👏🏽👏🏽 https://t.co/Atuah9EzFE
— Katrina Adams 🦋 (@katadams68) September 7, 2025 [NEWSLETTER FORM]