World No. 82 Zarazúa Upsets No. 6 Keys US Open First Round

Madison Keys, the 2025 Australian Open champion and sixth seed, was upset in the first round of the US Open by Mexico’s Renata Zarazúa, ranked 82nd in the world. Despite winning a thrilling first-set tiebreak, Keys’ performance unraveled with 89 unforced errors and 14 double faults, allowing Zarazúa to rally and win 6-7(10), 7-6(3), 7-5. Zarazúa’s victory marked the first time since 1995 that a Mexican player defeated a top-10 seed at a major and the first time in 30 years that an American woman seeded in the top 10 lost in the opening round at Flushing Meadows. The match illustrated Zarazúa’s effective use of offspeed balls and variation, which pressured Keys into mistakes. Zarazúa advanced to face Diane Parry in the next round. Other notable results included Barbora Krejcikova defeating Canadian newcomer Victoria Mboko and Belgium's Elise Mertens progressing past Alyssa Ahn.