There has not been a repeat World Series champion this century. And there’s a reason, as the Cubs are finding out. From 1903-68, the postseason was limited to a best-of-seven World Series. Now, postseason teams play as many as 20 games — including the Wild Card Game that was added in 2012 — to win it all.
It was in 1995 that the postseason underwent a major expansion. As if the expansion of the League Championship Series from a best-of-five to a best-of-seven series in 1985 weren’t challenging enough, Major League Baseball added a best-of-five Division Series to its postseason schedule 10 years later.