2021 Review — Starting Pitcher xK% Underperformers
Let’s return to our review of 2021 performances, this time flipping over to starting pitchers. Back at the beginning of 2017, I revealed the latest version of my pitcher xK% equation. From an adjusted R-squared perspective, it was the best equation I had developed. I’m never satisfied though and decided to perform my annual xMetric review over the winter, which included xK%. Lo and behold, I was able to develop an even better equation, which seemed impossible, but nonetheless, actually happened.