Explain the last month once he got healthy.
Mostly luck... I've been waiting for him to have another disaster start for awhile. It wasn't as though last month he was perfect though--he had two or three terrible outings when he came back, then two or three decent-to-good ones, now a terrible one again. Yes, some of those groundballs should have been outs, but that's the nature of the beast when you are a contact pitcher--you allow random variance, defense and luck to come into play. That's why you want to have guys who strike people out.
So the 7.5 K/9, 3.01 FIP and 2.84 xFIP in September was mediocre? Good to know that.
Small. Sample. Size. Seriously he had like two outings in September.