To practice my R skills (I wanted a different dataset to play with) I took an online class from EdX taught by BostonU baseball guru Andy Andres. They talk a lo

To practice my R skills (I wanted a different dataset to play with) I took an online class from EdX taught by BostonU baseball guru Andy Andres. They talk a lot in the class about sabermetrics and the data sources you can get. The public stuff (either free or through paid sources) is a fraction of the data that the clubs get and use for their own internal use. Things like wind on the field, each pitch speed, where it went in the strike zone, etc. are not released out. So you have a tough climb to get access to that data without getting the clubs to give it up. But if you build it the fans will come :) there is an amazing number of people that live for the little nuanced data. For those of you interested in Sabermetrics or think you'd like to know more about baseball stats, I highly recommend Andy's class.