World Series appeared in 9 and won 5. As of 2018, no team has won consecutive World Series championships since the New York Yankees in , , and —the longest such drought in Major League Baseball history. Until the formation of the American Association in 1882 as a second major league, the National Association of Professional Base Ball Players (1871–1875) and then the National League (founded 1876) represented the top level of organized baseball in the United States. All championships were awarded to the team with the best record at the end of the season, without a postseason series being played. From
Intellivision World Series Baseball its companion software titles sold particularly well... and since "IWSB" was one of the last titles made for the ECS system, very few copies were sold, making it one of the rarest Intellivision titles in the collectors' market. Daglow and Dombrower went on to create the hit "Earl Weaver Baseball" game at Electronic Arts in , where they more fully implemented the ideas behind "Intellivision World Series Baseball". This set the stage for the EA Sports product line. In the early and mid-1990s Daglow led the development of the "Tony La Russa Baseball" games, further refining baseball simulations. "Intellivision World