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Tuesday, September 27, 2011
Catcher Framing Skill, part WOWY
Mike Fast generously posted his file on Catcher Framing in his tremendous article last week. That file is the data source of everything I’m about to post here.
Also note that when I’m going to present a rate stat, it’ll be “per 75 called pitches”, because there’s around 75 called pitches per 9 innings. Since runs allowed per 9 innings uses the notation RA9, I’ll use CP9 for called pitches per 9 innings. (That it bears some resemblance to CP30 is either an unfortunate blemish, or a cool byproduct.)
Another note is that turning a called ball into a called strike is worth roughly +.12 runs. However, the way that Mike has identified the pitches, it’s more like a “probably would have been called ball” turning into a called strike. As a result, the run value, using this data source, is going to be more like .08 runs per extra call.
On to the data.
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