When I first saw the title I thought it could be Randy Winn, but he has only caught fire the past few weeks and obviously didn't come from the NL West.
Then I thought it *could* be Jobert Cabrera who came from the Dodgers, but he's not a regular and certainly isn't hitting that good.
That leaves the guy who came from San Diego: Mark Kotsay!
I honestly didn't notice his numbers being that good over the past two months. Nice find.