On the court, Alcaraz seemed unfazed by the added attention from his haircut. He needed just over two hours to see off the towering, big-serving Opelka in Arthur Ashe Stadium and kick off his pursuit of a sixth grand slam title and second at the US Open.

After impressing in a 6-4 7-5 6-4 victory, Alcaraz quizzed the crowd on his new look, earning loud cheers when he said: "I've got to ask to the people if they like the new haircut or not. Do you like it guys? I think they like it."

Carlos Alcaraz sported a new buzz cut at the U.S. Open on Monday and while the cropped style drew a mixed reaction online the Spaniard's spectacular tennis left no room for discussion as he dismantled Reilly Opelka 6-4 7-5 6-4 to reach the second round.