I haven't read anything recently in the Denver Post, but here is my best guess.
Walker could move up to the 5 spot if he produces. That would be quite a line up
, until Walker injures himself and Holliday is back in the 7 spot. Honestly, I don't think it will matter who hits 4 through 7 because they can all produce, and this lineup will produce lot's of runs.
I'm not Mr. Lebowski man, I'm the Dude.
Red Sox Fan