Originally Posted by RedsManRick
In short, no there's not - not in so far as we can/should assume that the difference is attributable to his absence (above and beyond the talent different between him and his replacement).
If the difference is significantly bigger than what his talent would dictate, I don't see how one cannot at least look to see if there is something else going on.
But what I get most out of that is that there are enough games on both sides for it to be important. We can't make the same judgement on say Votto or Phillips, because they aren't missing from the lineup enough.