You're right on Giarratano, he needs to play every day. His nervousness in the field Saturday was painful to watch. Can he play 2B? Infante is mediocre at best defensively and can't hit. He needs to go down and learn that he isn't a HR hitter-hit grounders, not flys.
I'm just not sure what recourse they have. It looks more and more that Guillen isn't going to be able to play solid D on his bum knee. Maybe a Smtih/Martinez rotation is the best they can do.