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Saturday, February 27, 2010
Slider-slider and fastball-fastball better than mixing?
So shows Dave Allen.
Sliders after a previous slider have better results than the average slider. This is seen in the whiff rate and in the slugging on contact. Similarity for fastballs there is better performance after a previous fastball, although it is seen just in the slugging on contact fastballs. So the whiff rate on a fastball following a fastball is a little lower than the average fastball, but the slugging rate is much lower. On the other hand both of these pitches are worse after the other compared to their average performance.
Maybe batters facing these two-pitch pitchers expect a slider after a fastball, and vice versa, and when they see the same one again it trips them up. Or again this could be some sort of sampling effect. Either way I hope to continue this analysis looking at the interaction of subsequent pitches based on their location and movement.
I love game theory.
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