The Chicago Cubs tore through the National League last year, winning 103 games, and knocking off the Giants and Dodgers, en route to their first pennant in 71 years.
Then, in the World Series, they eliminated an improbable 3-1 deficit from winning their first World Series in over 100 years. The Cubs are still going to be the favorite next year, but, who are the biggest threats to knock them off their perch?
The Giants are on this list simply because of their pedigree. Three World Series Championships in six years, oh, and not to mention, they gave the Cubs a very hard fought series in the divisional round.