Honestly, after watching Zheng Qinwen's match at the Australian Open, I'm not feeling great. As a tennis fan who has watched the sport for over twenty years, I could sense her struggles throughout the game. It's disheartening to see such a rising star falter in the second round of the Australian Open. Recently, I discussed this with some old friends from the tennis community, and our opinions align with those of tennis legends like Davenport and Prakash. Zheng Qinwen's loss can be attributed to her inability to fully grasp the intricacies of "flexible tactics." Siegemund played a cunning game, alternating between slice shots, drop shots, and lobs, which left Zheng Qinwen disoriented. Davenport made a valid point; she mentioned that Barty's previous success was due to her ability to capitalize on the rarity of players skilled in slice shots in today's game. Tennis is not just about power and speed but also tests a player's adaptability on the court. I've carefully considered Zheng Qinwen's playing style. She usually prefers to play at her own pace, with precise baseline shots and ample power. However, against Siegemund, known as a "spiritual school" player, her usual approach fell short. The opponent quickly disrupted her rhythm, leaving her flustered and stomping her feet in frustration. After the loss, Zheng Qinwen cited two reasons: the impact of a time violation penalty on her mentality and the nagging issue of an elbow injury. Honestly, I'm not entirely convinced by these explanations. Having played professional tennis for so long, a time violation penalty shouldn't significantly affect one's…