A Tale of Two Leagues: How Baseball Changed As the Rules, Ball, Franchises, Stadiums and Players Changed, 1900-1998

With the advent of interleague play and the realignment resulting from both the Milwaukee Brewers' jump from the American League to the National League and the creation of Central divisions, many baseball fans cried foul, claiming that their beloved game was being governed by infidels who cared nothing for tradition. These exasperated purists complained that realignment would mean the loss of existing rivalries, that interleague play would cheapen the thrill of the World Series, and that each move would contribute to the loss of statistical continuity. But change, even radical change, is nothing new to baseball.