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.
List of New York Mets seasons
The Mets lost 120 games in their inaugural season, the most by a post-1900 MLB team. After six more years in which their best league finish was ninth, the Mets won the World Series in 1969, defeating the Baltimore Orioles in five games to earn what is widely considered one of the biggest upsets in baseball history. Four seasons later, the Mets returned to the World Series, where they lost to the Oakland Athletics in seven games. After winning two NL championships in five years, New York struggled for the next decade, not coming within 10 games of the NL East leader until 1984.