In the early hours of January 7th, Beijing time, a focus match in the second round of the Australian Open men's singles saw the fifth-seeded Russian star Daniil Medvedev lose 2-3 to world number 121, Renner Jin, after a grueling five sets, resulting in an unexpected exit from the top 32. During the match, Medvedev, after falling behind 0-2 in total score, managed to save match points and win two consecutive sets to drag the game into a decisive set. However, he missed the opportunity to serve for the match and lost three consecutive points after a 7-7 tie in the tiebreak, ultimately exiting the tournament with regret. Similarly, in the women's singles second round, the fifth-seeded Chinese player Zheng Qinwen was surprisingly defeated 0-2 by the 36-year-old German veteran, Tamara Zidansek, also stopping at the second round. Thus, both the men's and women's singles No. 5 seeds were eliminated in the same round of this tournament. Medvedev and Zheng Qinwen are also the highest-seeded players to be eliminated so far in this Australian Open. Many netizens jokingly commented: "The No. 5 seed at the Australian Open is really cursed." Coincidentally, last year, Medvedev and Zheng Qinwen each finished as runners-up in the men's and women's singles at the Australian Open, respectively. This year, they both competed as the No. 5 seeds and did not participate in warm-up matches, directly parachuting into the Australian Open. However, Zheng Qinwen did not participate due to an unhealed elbow injury, even considering withdrawing from the Australian Open at one point. Medvedev, on the…