Final answer:
Babe Ruth, while an iconic figure in baseball and formerly a pitcher for the Boston Red Sox, is not the correct answer to the question. The information provided does not disclose the identity of the only pitcher to win World Series games in three different decades.
Step-by-step explanation:
The only pitcher in Major League Baseball to win World Series games in three different decades is not Babe Ruth, despite his early career as a pitcher for the Boston Red Sox and the success he had with the New York Yankees. Instead, that unique achievement belongs to a different player, and the available reference provided does not contain the information to correctly identify who this player is. To discuss Babe Ruth's legendary status in baseball, however, we can note that he became the cultural icon of his day, famous as much for his powerful batting as his fast lifestyle, which resonated with the 1920s era of excesses. Although a superb hitter for the Yankees, Ruth's World Series pitching victories with the Red Sox were all in the 1910s, before he was traded to the Yankees.