He has great raw stuff, but only okay command. It's likely that he's been told to "trust his stuff" so much over the years that he basically just offers up meatballs every once in awhile rather than work the corners. He has looked far, far better than a 5+ ERA, and his peripheral stats say he has been far, far better than a 5+ ERA. When both of those things agree I am fairly confident that things will straighten out for him. His last few outings before this one were pretty good. Marcum and Gallardo have each had stretches this year where you feel like nobody is going to hit them, and I think it's just a matter of time before Zack gets into that groove as well. Luckily, the offense has picked him up big time, so that should really help out his confidence and demeanor out there, and his poor results haven't hurt us much (until today) In short, I'm not worried at all.