As a full-fledged member of Red Sox nation, it pains me greatly not to put my own team at the top of this list.
With that being said, there is not a whole lot of difference between the fans of the top three teams on this list.
Red Sox Nation suffered through heartbreaks in 1946, '67, '75, '78, '86 and 2003 before finally seeing the 2004 "Idiots" complete the greatest comeback in sports history against their hated rival and go on to sweep the Cardinals, hoisting the World Series trophy for the first time in 86 years.
Just to give you an idea of the dedication of the fans from Beantown, the last time there was a non-sellout at Fenway was 2003.
Yankees fans have no argument when it comes to who has the more faithful and passionate fans.
Sports are everything in Boston, they determine the mood of the city depending on what time of year it is.