I can't see how he's a reserve infielder, because he only plays second base. He's not exactly a super utility guy. When he's back, he plays. And I don't know if that's a bad thing; I know his injuries don't exactly make him the most reliable option, but when he's on, he's pretty good. I know we all want Ryne Sandberg, but realistically, Castillo's not a terrible guy to have in your lineup.