Projecting Rios could be a case study in the “statistical sample size” vs. “what have you done for me lately” aspects of performance expectations. On the “lately” side, only the last 10 games of 2009 gave any inkling of hope (he hit .333/.400/.556 in 40 PA). But while we know that 10 games is a “throwaway” sample size, could it be that the entire 2009 is also? BABIP is shown to track with career BABIP, and Rios still sports an excellent .323 career BABIP, due to his line-drive hitting ways (before 2009), good speed, and decent power. So, do we assume that his BABIP will rebound to the .320 range? His BB% and ISO were down a little in 2009 (5.8% vs 6.6% career BB% and .148 ISO vs .163 career ISO), but nothing that seems out of place from a random fluctuation. And his contact rate remained virtually unchanged (though he struck out more after coming to Chicago). …
January 29, 2010
THT Fantasy on Carlos Quentin and Alex Rios
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