In the fourth round of the women's singles competition in the upper half of the 2025 Australian Open on January 19th, Beijing time, the list of eight finalists was finally announced without any major upsets. However, some key matches still had their highlights, with veterans and newcomers competing on the same stage, tension and suspense intertwined, adding a bold stroke to the battle for the top eight at the Australian Open. Sabalenka Sweeps Through to the Quarterfinals, Continues Hard Court Dominance Top seed Aryna Sabalenka demonstrated her strength as a top player, easily sweeping past 17-year-old Russian newcomer Mirra Andreeva with a score of 6-1/6-2, advancing to the quarterfinals with full force. This victory is not only Sabalenka's 18th consecutive win at the Australian Open in her career but also her ninth consecutive win this season. Since Serena Williams in 2004, she has become the youngest female player to win 18 consecutive Grand Slam matches on hard courts, a performance that can be called a legend on contemporary hard courts. Spanish Beauty Ends "Dark Horse" Myth 11th seed Paula Badosa faced "dark horse" Danka Kovinić in another focus match. Kovinić had previously caused an upset by eliminating the 7th seed Pegula in the third round, entering the round of 16. However, in this match, Badosa used tactics to completely dismantle Kovinić's "myth," ending her dark horse journey with a straight-set victory of 6-1/7-6(2). Thus, Badosa advanced to the quarterfinals of the Australian Open women's singles for the first time, equaling her personal best Grand Slam record and once again refreshing…