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 showed up at the U.S. Open on Monday for his first-round match with a new look: 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 heading out to beat big-serving Reilly Opelka 6-4,

Tennis star Carlos Alcaraz said he shaved his head before the U.S. Open to fix a haircut gone awry. As history (and these photos show), however, his hair grows back fast.