I play the matchups based on the team they are facing, not the opposing pitcher. In your case it's Greinke against the Mets and Expos. I'd definitely make those starts.
Yes doctor, I am sick.
Sick of those who are spineless.
Sick of those who feel self-entitled.
Sick of those who are hypocrites.
Yes doctor, an army is forming.
Yes doctor, there will be a war.
Yes doctor, there will be blood.....