THE BOOK--Playing The Percentages In Baseball

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Wednesday, March 17, 2010

How much year-to-year variability do we find in ERA for a star pitcher?

By Tangotiger, 02:52 PM

This is what I did. I started with the list of the 12 best starting pitchers born between 1962 (Clemens) and 1971 (Pedro). I took out Smoltz because of his relief stint in-between his starting stints, leaving me with 11.

For each of those pitchers, I figured out his first quality year, which I simply defined as having allowed runs at most 80% of the league average while facing at least 500 batters. I then looked for his last quality year, and set his “last season” as one greater than his last quality year.

I get this chart:

(12) Comments • 2010/03/18 • Sabermetrics • Pitchers • Talent_Distribution

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THE BOOK--Playing The Percentages In Baseball

Wednesday, March 17, 2010

How much year-to-year variability do we find in ERA for a star pitcher?

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