Yahoo! Sports: Verducci–The Year After Effect
I’m not entirely convinced that the increase in workload Verducci describes is much of an indicator for future problems by young pitchers. The fact is that young pitchers usually see such a dramatic increase in their innings pitched because they are having a successful season. Regression to the mean would explain why their ERA and win totals the next year might decrease. For instance, to count Mark Buehrle last year as someone who declined because his ERA got worse last year, doesn’t seem particularly helpful.
So far there is little conclusive evidence about a pitcher’s work load that offers a prescriptive solution. The fact of it is, as Verducci says, that there are many factors that determine a pitcher’s ability to stay healthy.
And still, I’m downgrading Ben Sheets and Jake Peavy this year.