List of World Series champions
The World Series is the annual championship series of Major League Baseball (MLB) and concludes the MLB postseason. First played in 1903, the World Series championship is determined through a best-of-seven playoff and is a contest between the champions of baseball's National League (NL) and American League (AL). Often referred to as the "Fall Classic", the modern World Series has been played every year since 1903 with two exceptions: in 1904, when the NL champion New York Giants declined to play the AL champion Boston Americans; and in 1994, when the series was canceled due to the players' strike.
1982 World Series
Both participants are currently in the NL Central, due to the transfer of the Brewers from the American League to the National League in 1998. This raises the possibility of the Brewers eventually representing two different leagues in World Series competition. That has happened three times before, taking the 19th Century contests into account: The Brooklyn Dodgers of 1889 and 1890, the Cardinals, who won the 1886 Series when they were in the American Association, and the Houston Astros, who played in both the 2005 World Series against the Chicago White Sox as a National League team, and the 2017 World Series against the Los Angeles Dodgers as an American League team. This also makes this one of two World Series in the modern era (1903–present) that it is not possible to have a rematch, the other being the Astros and White Sox, due to the Astros moving to the American League in 2013.