Baseball History Timeline By oversmc222 Sep 27, 1839 Abner Doubleday is said to have invented the game of baseball in Cooperstown, New York. May 13, 1845 Alexander Joy Cartweight creates the rules of baseball. Jul 18, 1846 The Knickerbockers and a team of cricket players play in the first official game in New York City. Mar 17, 1971 Baseball’s earliest roots founded in a bylaw in Pittsfield, Massachusetts.