I'm not sure how anyone can claim this. 246/293/348 doesn't scream "pretty damn well" to me. Add to that his defense, which was nothing spectacular (and I'd argue worse than Hart), and I don't think it's a given he's a central part of the plan next year. Yes, he's left handed and cost controlled, which helps, but I don't think you can cite his MLB performance as a reason for him being a starter. As others have pointed out, he's had good minor league numbers, which would hopefully lead to good MLB numbers. That just hasn't happened for a variety of reasons, some out of Mat's control, and some very much within his control.