Prior to playing, Alcaraz ran into golf star Rory McIlroy, who reached out his hand to rub the scalp's stubble. When Alcaraz played in the U.S. Open's mixed doubles event last week, he did so with a full head of hair.

On Sunday, Rory McIlroy was complimenting Carlos Alcaraz's new haircut. On Monday, Alcaraz mimic'd McIlroy's golf swing after his first-round win.

As Alcaraz's journey at the 2025 US Open began, fans had to get accustomed to a very different look from the Spanish phenom.