Seriously? ...
Here's a novel concept... We don't know these guys. DFAing Lidge could be the end of his career. Zim is a great guy, clubhouse leader, etc. sitting him down or moving him down is embarrassing and a big blow. The personal factor leads Davey and Rizzo to give these guys every opportunity plus a couple more. None of us on here know a tenth of what Davey and Rizzo know. We also don't have to look them in the face.
