Sports leagues (e.g., NFL, NBA, NHL)

Sports leagues like the NFL (football), NBA (basketball), and NHL (hockey) are organized groups of professional teams that compete annually in their respective sports. They establish rules, schedules, and standards for competition, and oversee player contracts, salaries, and team operations. Each league has a season culminating in playoffs to determine a champion. They also generate revenue through ticket sales, broadcasting rights, merchandise, and sponsorships. These leagues foster fan engagement, promote the sport's growth, and create a framework for competitive and commercial success across their sports.