Carlos Alcaraz's 15-match Grand Slam unbeaten streak ended at the US Open with a 6-1, 7-5, 6-4 loss to 74th-ranked Botic van de Zandschulp. The defeat came as a surprise given Alcaraz's status as third seed and previous successes. Van de Zandschulp, a 28-year-old Dutch player, is known for his strong baseline game and versatility.