This academic study by Dr. Falah Mahmoud Al-Qaisi delves into the complex world of sports psychology, focusing on handball players. It presents a detailed case study examining multidimensional anxiety levels both before and after competitions. The research critically analyzes the relationship between these fluctuating anxiety states—including cognitive and somatic components—and the players' tangible, on-court performance. This work provides invaluable insights for coaches, athletes, and sports scientists seeking to understand and manage competitive stress to optimize athletic achievement. It is a key resource for understanding the psychological factors that drive success in high-pressure sports environments.