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Tuesday, October 04, 2011
PITCHf/x v BIS
Colin is showing the compiled data from PITCHf/x, and Fangraphs continues to use BIS.
I’m only doing a very cursory review here, so hopefully, someone will be inspired to do alot more. I sorted by “Zone_rt” or “zone%”. I put in a minimum 2000 pitches on Colin’s site, and 500 PA on David’s. That should correspond fairly well. Anyway, #1 for Colin and #5 for BIS for amount of pitches in the strike zone is Vlad (41% with PITCHf/x, 39% with BIS… guys, can you drop the decimals please?).
But, #1 for BIS is Prince Fielder at 38%, and he’s #23 with Colin at 46%.
I stopped there. Now, I understand that there is no fixed strike zone to speak of. And maybe Prince gets pitched more on the edges, so we expect to see some differences.
Hopefully, someone else does some leg work here and gives us some correlation numbers.
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