Earlier this week, I explored how the movement and velocity of sliders contribute to the amount of groundballs the pitch generates. I concluded that having a high velocity and a lot of drop on the pitch leads to a high groundball rate, while horizontal movement causes the expected groundball rate to decrease.
While I was able to identify the sliders that had the best and worst shapes for getting groundballs, this gives us a view of only a piece of the sliders' results. To try to get a broader view of each slider, I constructed a similar model, but focused on explaining and projecting whiff rates.