3. Carlos Alcaraz
A five-time slam champion at just 21 years old with two already under his belt in 2024, Alcaraz will rightfully enter the draw at the U.S. Open as the betting favorite. The Spaniard has shown to have the highest ceiling of any player in the world right now, displaying his vicious running forehand, endless motor, and Nadal-esque strength late into matches. Don't let the third seed fool you, as Alcaraz remains arguably the best in the world, entering the season's final slam.