Learner Tien Stuns Zverev, Seeds Drop in Acapulco

In a surprising upset at the Mexican Open, 19-year-old Learner Tien defeated top-seeded Alexander Zverev 6-3, 6-4, marking his second career win over a top-five player. Tien, who previously knocked out Daniil Medvedev at the Australian Open, is the youngest American to achieve this feat since Jimmy Connors. The competition was notably challenging for the top seeds, as illness forced several to withdraw, including second-seeded Casper Ruud and third-seeded Tommy Paul, while fourth-seeded Holger Rune retired from his match after just three games. The day's matches also featured Ben Shelton losing to David Goffin, and Alejandro Davidovich Fokina overcoming Frances Tiafoe in a dramatic three-set match. Tien's next challenge will be against eighth-seeded Tomas Machac in the quarter-finals. The event continues to showcase the unpredictability of the tournament as top players face unexpected hurdles.