In an alternate universe, the Beatles' British Invasion left an even bigger footprint on American Culture. The Beatles performed at Shea Stadium in August of 1965. The following off season, 6 teams with stadiums with big, circular, cookie cutter stadiums decided to switch to a more proper sport. The teams formed Major League Cricket. Those teams were the Mets, Athletics, Orioles, Cardinals, Braves, and Astros. The teams invented the Twenty20 version cricket to appeal to the American spectators.