If you go to this website (http://theuniverseas.com/baseball/baseball.html) you'll find stats on every pitcher's pitch last year (that there was enhanced gameday data for last year: 625 pitchers). There are stats like ball speed (v0), the spin put on the pitch (rpm), BABIP, SLGBIP, and contact rates when the pitcher threw the indicated pitch. There are also pitch selection splits in the comma delimited files (.csv files).

Here's a sample:

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