Major leagues refer to the highest level of professional sports competitions in various sports, such as baseball, basketball, and football. These leagues feature the best teams and players, attracting large audiences and significant media coverage. Examples include the Major League Baseball (MLB) in the United States and the National Basketball Association (NBA). In major leagues, teams compete for championships and titles, often culminating in playoff series or tournaments. Players in these leagues are typically highly skilled and may earn substantial salaries. Major leagues also play a crucial role in the development of sports culture and fan engagement worldwide.