In a remarkable debut, 18-year-old Brazilian João Fonseca defeated ninth seed Andrey Rublev in straight sets at the Australian Open, showcasing impressive skill and composure. Fonseca's victory, marked by powerful serves and aggressive groundstrokes, stretched his unbeaten streak to 14 matches. While Rublev struggled, the young Brazilian's performance excited fans and pundits alike, signaling his potential as a rising star in men's tennis. Other notable advancements included Australian Alex de Minaur and women's players such as Emma Raducanu and Elena Rybakina. Meanwhile, Daniil Medvedev faced challenging moments in his win over Kasidit Samrej.