I had a career .800 OPS guy who was at .527 OPS after 43 games before succumbing to a 232 day forearm, nerve irritation. I seem to recall poor performance from other players in the past just prior to an injury.

Question: any causation either way? Does simmy make some guys play like crap before they get hurt? Or, conversely, does simmy increase injury potential in guys that are playing way below normal?