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, 7-5, 6-4 in just over two hours at Arthur Ashe Stadium at night. The 22

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