Baseball history By mrdcamp Jan 1, 1876 the National League of Professional Baseball was founded Jan 1, 1901 the American League of Baseball was founded Sep 28, 1901 The Pittsburg Pirates won the first modern World Series Sep 28, 1911 the Black Sox threw the World Series Apr 15, 1947 Jackie Robinson played his first baseball game, and broke the color barrier Jan 1, 1994 the MLB lockout canceled the postseason Mar 4, 2006 the first World Baseball Classic was played Nov 11, 2011 the Florida Marlins moved to Miami Jan 1, 2012 The MLB added a second wildcard Nov 1, 2012 The Houston Astros moved to the AL