I know Greeinke had anxiety issues. This from a July article by Jeff Sullivan in Baseball nation:
We knew of Greinke as a talented prospect and pitcher, but our first exposure to him as a person came early in 2006, when he walked away from the Royals and nearly quit baseball on account of social-anxiety disorder. It was around that time that Greinke also conducted one hell of a strange interview that sadly seems to have been pulled from the web. There was crying about Jennifer Aniston and sharing home and garden magazines and everything. In the long history of athlete interviews, that's one that's always stuck with me.
It was clear that Greinke was different, but starting around then, he developed the reputation of being weird. Which was fine, because he did seem weird, relative to other players. But the thing about weird people is that they're tough to figure out, tough to put into boxes. That's what makes them weird. People have understood Greinke to be weirder than most, but they've taken that to make assumptions that they don't know enough to make."
Do you really think this is a guy can make it in Boston.