In the dynamic landscape of modern football, the integration of data-driven decision-making processes through Business Intelligence (BI) tools has become imperative for clubs striving to gain a competitive edge. This thesis delves into the application of BI tools within the realm of football, focusing on a comparative study between the Croatian Football League and Bundesliga. Through a comprehensive examination of the utilization of BI tools in scouting, player performance analysis, and fan engagement, this research aims to elucidate the extent to which such technologies have been embraced and their impact on the respective leagues' competitiveness. By comparing the adoption rates, implementation strategies, and outcomes of BI tools between the two leagues, this comparative analysis seeks to identify best practices, challenges, and opportunities for further enhancement. Findings reveal varying degrees of BI tool integration across clubs in both leagues, influenced by factors such as financial resources, organizational structure, and technological infrastructure. While Bundesliga clubs exhibit a higher propensity for leveraging advanced analytics and data visualization techniques, Croatian Football League counterparts demonstrate innovative approaches tailored to resource constraints. Furthermore, the study underscores the pivotal role of BI tools in talent identification, player development, and fan experience, contributing to improved performance outcomes on and off the pitch for all stakeholders (players, coaches, referees, etc.). Implications of the research extend beyond the realms of football, offering insights into the broader applications of BI tools in sports management and decision-making processes. By elucidating the comparative landscape of BI tool utilization in football leagues of different scales and contexts, this thesis serves as a foundational resource for clubs, leagues, and stakeholders seeking to harness the power of data-driven insights to achieve sustainable competitive advantages in the ever-evolving landscape of professional football.