I read about this one in the paper a couple of days ago (yes, I should post more promptly), and I still can't understand it. His home/road splits aren't quite as bad as I expected them to be, but San Diego's park is still very well suited to his style of pitching. And the cell tower is particularly badly suited to it. I just don't see it working out well for either of them.
And that's doubly true when you add in moving from the NL to the AL. For those unaware, the AL is a far more competitive league than the NL. The AL didn't dominate the NL quite as impressively this year as the last couple, but it was still a solid margin.
I guess we'll see what happens once Peavy returns from the DL.