Thursday, May 16, 2013
WOWY catcher-framing, since 1988
Finally! As you know, I'm pretty big on the With Or Without You (WOWY) method, especially as it relates to catchers. I did it for WP, PB, BK, SB, CS, PK, and I added:
I'm not including blocking the plate or framing the pitches, though that last part might be doable ?
It took some ten years, but Max has not only taken on the challenge, but really went all-out. First, he did the right thing by comparing the PITCHf/x method to the Retrosheet method. Basically, how much do you lose by not knowing the exact location of the pitch? Seems to be: you don't lose much, especially as your sample grows.
With that established, we have the treasure-trove of data going back to 1988 via Retrosheet. And Max gives us the career and seasonal numbers. Just tremendous effort, and very well-done. One of the best research pieces of the year.
(Max: will you be posting all your data?
As well, why did you choose "per 5000 pitches" to represent a season? Just taking one catcher at random, Piazza was averaging 8.4 called pitches per inning, so if we go with say 1200 innings to represent a regular catcher season, that's 10,000 pitches. Wouldn't that be the better seasonal-standard?)
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