UML use case diagram modeling a multi-role sports tournament management system with four distinct user personas: Administrator, Gestionnaire, Capitaine, and Joueur. The system separates concerns across account administration, operational management, team leadership, and player consultation, with shared authentication and reporting features. Administrators control user lifecycle and full system access; Gestionnaires manage facilities, disciplines, teams, players, tournaments, matches, scores, and rankings; Capitaines oversee their team and tournament registrations; Joueurs view team, match, and results information. This role-based access control pattern demonstrates least-privilege design and clear separation of duties essential for scalable multi-tenant sports platforms. Fork this diagram on Diagrams.so to customize roles, add new use cases, or adapt it for your tournament management requirements.