Alliances or partnerships significantly impact sports leagues by fostering collaboration among teams or organizations. Such collaborations can enhance marketing efforts, create shared resources, and unlock new revenue streams, such as cross-promotions and shared sponsorships. Partnerships may also lead to improved athlete development programs through shared training facilities or talent exchanges. Furthermore, these alliances can strengthen the overall competitive landscape within a league, making it more attractive for fans and investors alike. Ultimately, partnerships can play a crucial role in the growth and sustainability of leagues.