Tennis legend John McEnroe channeled his inner Charles Barkley with his no-holds-barred opinion on Carlos Alcaraz’s new hair.

Carlos Alcaraz was almost unrecognizable when he stepped on the court against Reilly Opelka for his first-round match the US Open. His usual bushy, mop haircut was replaced by an unexpected buzz cut as a result of a pre-game mishap involving his brother.

Carlos Alcaraz has showed up at the U.S. Open for his first-round match with a shaved head. Alcaraz, who is seeded No. 2 at Flushing Meadows, caused a bit of a buzz with his buzz cut when he got to the tournament grounds before beating Reilly Opelka in straight sets at Arthur Ashe Stadium on Monday.