The Arizona Diamondbacks are just one team in the NL West that has looked to improve itself in the off-season.  All the others have made moves to try to do the same.  Even after winning the division, there is always room for improvement.  Here is a look at the biggest additions and losses for each NL West team through this weekend.  I would suspect that some teams, even the Dbacks, are not done making moves yet.  We shall see.

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