Fangraphs.com

Fangraphs.com is definitely the best site for stats. It offers more comprehensive batted ball data and great Win Probability charts. Now they`re adding the percentage of times pitchers throw each pitch and itss average velocity. For example, Rivera threw cutters 73.2%s of the time at an average of 93.2 miles per hour, he threw fastballs 26.7% of the time at an average of 93.6 mph, and he threw changeups .1% of the time at an average of 83 mph. I might try to incorporate this into RCA.