Athletes' performance is the most important factor for a team's success, and a sportsman might achieve this by exhibiting exemplary sportsmanship attributes. This problem also deserves the attention of politicians and researchers. Thus, the present study investigates the effect of personality factors such as attitude toward sports, self-efficacy, and initiative on the performance of athletes in the Iraqi sports complex. The research also examines the moderating effect of team support on sports attitudes, self-efficacy, proactiveness, and players' performance in the Iraqi sports complex. The analysis utilized survey questionnaires to collect information from respondents. SPSS-AMOS was also used to explore the correlations between variables. The results demonstrated a favorable relationship between attitude toward sports, self-efficacy, proactiveness, and players' performance in the Iraqi sports complex. The results also revealed that team support greatly moderates the relationships between players' attitudes toward sports, self-efficacy, proactiveness, and performance in the Iraqi sports complex. Using reasonable personality qualities and team support, the study aids policymakers in formulating legislation to improve the performance of athletes