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.
Uniform number (Major League Baseball)
In 1951, the Springfield Cubs of the International League pioneered the look of having numbers on the front of the jersey. A year later, the Brooklyn Dodgers incorporated the idea into MLB. They had intended numbers-on-front to be first used in their 1951 World Series appearance, an event which did not occur because of Bobby Thomson's walk-off home run in the last game of the tiebreaker series between the Dodgers and the Giants. Today, numbers on the front are very common at all levels of play. In 1940, the Memphis Red Sox of the Negro American League wore numbers on their pants leg; the idea didn't catch on in MLB until the 1975-78 Astros wore numbers on their front left hip.