Though it’s not yet set in stone, Clayton Kershaw is probably going to win the ERA title, and he’s probably going to win the National League Cy Young Award, because Cy Young Awards frequently go to the guys with the ERA titles. Yet Kershaw isn’t the only starter with an ERA under 2, after you lower the minimums a little bit. There are actually three of them, one of whom is Kershaw, who is demonstrably and understandably amazing. One of them is Jarred Cosart, whose ERA is a hell of a lot more promising than the rest of his numbers. And the third is Clay Buchholz. Kershaw stands out because his adjusted ERA is nearly half the league average. Buchholz stands out because his adjusted ERA is two-thirds Kershaw’s. And Buchholz, now, is back from injury.
Any ERA that low, for a starter, is unsustainable, especially for a starter in the American League and Fenway Park, but Buchholz’s xFIP- is way improved. His FIP- is way improved. Something that’s helped him prevent runs is that he hasn’t surrendered many dingers, as dingers count for runs automatically. But more interesting than that is Buchholz’s strikeout increase. Used to be that Buchholz’s strikeout rates didn’t quite match the quality of his stuff, or at least that was the perception. This year he’s taken a leap forward, striking out a quarter of the batters he’s faced. Changes in strikeout rate capture an analyst’s attention, and in Buchholz’s case, there’s something in particular that’s been driving this.
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