Aryna Sabalenka kicked off her WTA Finals campaign with a hard-fought victory over Karolina Muchova, despite struggling with her serve throughout the match. The match was tightly contested, but Sabalenka managed to pull through, demonstrating her resilience and competitive spirit. This win is crucial for Sabalenka as she looks to regain her top form after a challenging season. Her ability to secure a victory in the face of adversity sets a positive tone for her tournament run. As she aims for the title, Sabalenka will need to refine her serve and capitalize on her strengths in the upcoming matches.