The Mariners have added more pitching than hitting this winter, so they still have some work to do before the 2012 season begins. They have went the trade route and to Japan (for free agents) to try to improve the teams so far this winter. Here is a look at the new guys the Mariners have brought in over the winter so far:

On the field: The Mariners made a big splash just a couple of days ago in dealing for DH/C Jesus Montero. He will be the full-time DH for the Mariners starting in 2012. The Mariners also dealt for lefty swinging catcher John Jaso to platoon behind the plate with Miguel Olivo in 2012. The Mariners also brought in outfielder Darren Ford and shortstop Munenori Kawasaki to compete for backup jobs this spring, and they both have decent upsides.

On the mound: The Mariners have signed Hisashi Iwakuma as a free agent from Japan and he will likely replace Michael Pineda in the starting rotation in 2012. Reliever George Sherrill will likely be the Mariners’ top lefty reliever in 2012 as he is coming off a solid year with the Braves in 2011. Righty Aaron Heilman will compete for a bullpen job this spring for the Mariners. Righty starter/reliever Hector Noesi was part of the return for Michael Pineda and he will either be in the rotation or the bullpen for the Mariners in 2012.

Overall: The Mariners didn’t want to spend too much money this winter, as they are not a legit threat to the re-loaded Angels or the Rangers in 2012. But, they have made some nice additions for the future.