Assessing the mental toughness of a tennis player involves observing their ability to maintain focus and composure under pressure, particularly during high-stakes moments in matches. Key indicators include their response to adversity, such as how they handle losing streaks, missed opportunities, or challenging opponents. Additionally, a mentally tough player often showcases resilience, demonstrating a strong commitment to their training and strategies, and an ability to recover from setbacks quickly. Evaluating their consistency in performance, emotional regulation, and adaptability to varying match conditions also provides insight into their mental fortitude.