The Arizona Diamondbacks were the surprise of baseball in 2011 and would like to solidify their dominance in 2012.
In order to repeat as NL West champions, the Diamondbacks must prove that 2011 wasn't a fluke.
The division should be much tougher in 2012.
The San Francisco Giants will finally be over their World Series hangover and should have have one of the best teams in baseball. The Colorado Rockies and Los Angeles Dodgers were an utter disappointment in 2011, but should be vastly improved.
As for the San Diego Padres, while it's true that they aren't expected to be a contender, neither were the Diamondbacks in 2011.
As the 2012 MLB season gets underway, the Diamondbacks have their work cut out for them, but they have all the tools necessary to be successful.