In my opinion, you see more guys come back from injuries stronger than before in real life. Therefore, no rating drop would be evident.
One case I have is Matt Morris. The guy had Tommy John surgery, which used to be the death knell for pitchers. Now he's a Cy Young candidate (well, last year he was, I say he needs two more solid years to establish himself).
While it takes longer for guys to get going, some just pick up where they left off, and it happens more often now than before, thanks to extensive rehabilitation programs (not for substance abuse. ; ) )
What would be REALLY neat is if it took a little bit for some players (not all, but some) to get back on track. Maybe play really bad at first, then work their way back into the swing of things. I think that'd be extremely tough to work out in code, but hey, I can dream...
Peace
John
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