I'm not excluding the end. If you include tonight's start, this is how his last four months have gone. Those are still very very good.
June, , 2.40 ERA, 7.50 innings per start.
July, 2.45 ERA, 7.38 innings per start.
August, 3.72 ERA, 7.28 innings per start.
September 2.97 ERA, 7.17 innings per start.
He compares to to Verlander, Felix, and the best of them over the last four months of the year. And none of them pitch in Fenway every other start.