This isnt opinion, its fact. The Cubs confirmed it with a story over on Cubs.com (here)
Im a bit surprised with it, but its Lou's decision and I'm sure he knows what he's doing. Dempster has been the most consistant starter for the Cubs, so it makes sense.
From what I could tell there is no word as to who will start games 2 and 3, but Id imagine it'd be Harden followed by Z...
...and discuss...