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.
1920 Brooklyn Robins season
On October 10, 1920, which was the fifth game of the World Series, Elmer Smith of the Indians hit the first grand slam in World Series history. On the same day, Bill Wambsganss of the Indians had an unassisted triple play. He caught a liner, touched second base, and tagged the runner coming from first base. During that same game, Indians pitcher Jim Bagby became the first pitcher to hit a home run in World Series history.