I mean look at his body language out there. He has no idea where the ball is going to go. If Butler is healthy he needs to come up here and take a couple of starts while Chatwood reworks his delivery or something....this might not be something he fixes on the fly.
I wonder if that percentage would go up or down if you removed partial innings. Not 100% but I believe I remember seeing 2 partial innings he walked someone and 1 partial inning he did not.