With four teams still left in the race in the 2012 MLB playoffs, pennant winners have yet to be decided. By the end of the week, two teams will emerge from battle as the champions of their respective league.
Many people nowadays put much more stock in the winner of the World Series, and rightfully so. It takes a monumental effort for that one team to climb above all the rest in its own league and then take down the champion of the opposing league as well.
However, just winning a pennant is a huge accomplishment. Through six weeks of spring training, 162 regular season games and now three tiers of playoff rounds, it takes a special team to rise to the top of its league.
In the past, some of those teams that made it to the pinnacle were underdogs from the start. It seemed almost impossible that they would be able to climb to the top in the face of insurmountable odds. But they did, and we are here to celebrate them as we wait for this year's pennant winners to emerge.
Here is a ranking of the most improbable pennant winners in MLB history.