New York Yankees
The New York Yankees are the most overrated major league franchise of any sport in the world. Fans of the Yankees, among the most arrogant and insufferable people you'll ever have the misfortune of encountering, will often justify their boastful pride by citing the 26 World Series Championships won by the team, despite their likely not having been alive for more than 4. Tragically, pointing out that only 7 of those titles have been won in the 47 years of the expansion era, and other less than glorious facts do little to put these cretins in place.
The Yankees can be seen as a microcosm of white-collar New York City; flagrant extravagance, unbridled arrogance, extreme self-assurance, and the drive to win at all costs define the franchise.
As of 2009, it appears that, like their fanbase and natural allies in finance, their spending has caught up to them. Apart from Opening Day 2009, Yankee Stadium has not sold out a single game.
The Yankees' location in New York mean that they are a member of 24-7 coverage by ESPN. As a result, if we were to rank the epicness of sports rivalries by ESPN coverage, "Joba's dad vs. Health" would make the top 10 of any list.