About. The World Series is a huge sporting event played each autumn between the winner of the American League and the National League. The team that wins four out of seven games is crowned the Major League champion.

The New York Yankees have the most World Series titles, with 26 championships through the 2005 season. Seven teams have never won a World Series title: the Colorado Rockies, the Houston Astros, the Milwaukee Brewers, the San Diego Padres, the Tampa Bay Devil Rays, the Texas Rangers, and the Washington Nationals.