Strikeout Rates: Bumgarner & Gio Gonzalez
In early February, I wrote a post for “FG+” that endeavored to sniff out starting pitchers who either over-performed or underperformed their inherent strikeout ability. Inspired by Zack Greinke, Tommy Hanson, and Anibal Sanchez, among others – there were many starters that saw pretty massive fluctuations in their strikeout performance between 2010 and 2011. Being the curious human I am, I wanted answers. Or at least a direction on the path of finding an answer.
Specifically, this little study sought out to create an “expected” strikeout rate by controlling for their prior year K%, current year (2011) K%, SwStr%, and fastball velocity (definitions of correlations and the r-squared of the model at the bottom of this post). The results were pretty interesting, should you happen to have access to the full piece.