In baseball there are stats for everything and the Wall Street Journal has published a hateability index just in time for the playoffs. This index, as you would expect, has everyone in St. Louis all atwitter since the Cardinals are said to be the most hated team in the playoffs.
Click chart to see better
The criteria for this chart seem a stretch in some cases, but I'd wager if the Cardinals are indeed the most hated team in the playoffs, it has more to do with the fact that they seem to BE in the playoffs more often than not. 2014 is the 4th year in a row for St. Louis. After a time fans in other cities become bored and resentful of a successful team.