Watch: Alcaraz’s new look shocks tennis world – Tiafoe says ‘it’s terrible!’

Carlos Alcaraz, aiming for his second US Open title, debuted a shaved head as he began his campaign against Reilly Opelka. Venus Williams is also set to mark her 25th appearance at the tournament. Alcaraz's new look drew reactions, including playful criticism from friend Frances Tiafoe, adding a lighthearted note to the competition's start.