TennisTemple. Carlos Alcaraz got one more better over rival Jannik Sinner as he defeated the 2024 champion in the US Open 2025 final on Sunday, September 7, with a thumping four-set win. With six Grand Slam trophies already, Alcaraz now holds the second-most majors won before the age of 23, equalling Rafael Nadal and sitting just one behind Bjorn Borg — a record he could match.