Unlike many San Francisco Giants fans, I am not yet ready to give up on Jonathon Sanchez unless we can get a young position player with power in return.
Sanchez has excellent stuff and (drum roll please) he is left handed. To give up on a young left-hander is not smart baseball wise. From what I have seen, it is more his placement of pitches and the pitches that are called than his actual "stuff."
As much as I like Benjie Molina, it seems that he (or is it Bochy?) calls pitches based on a particular batter's weakness rather than on our pitcher's strength. I mean, David Ortiz is having a tough time catching up to fastballs right now but I sure wouldn't have Zito throw him fastballs.
What I would rather see, is Sanchez go to the bullpen (we only have one left-handed reliever in Affeldt) as a situational pitcher. I believe that this would help him because he would only be pitching for short stints and would be throwing to his own strengths.
Once he realizes that he can get people out, they should give him another shot in the rotation. I am not altogether comfortable with Zito or Johnson nor am I ready to bring Bumgarner or Alderson up. Therefore, let's consider Sanchez a work in progress. If it fails, then so be it.