6. New York Yankees v Boston Red Sox
Arguably the fiercest rivalry across all of American sport, the Yankees and the Red Sox have been slugging it out for over a century in the world of baseball.
While the Yankees have historically been infinitely more successful with 27 World Series titles to the Red Sox's eight, the latter franchise were victorious the last time squared-off on a big post-season occasion in 2004.
The Red Sox have won both of their last two meetings against their hated foes and even captured the 2013 championship, while the Yankees did not even make the playoffs.