"Induced movement" looks like an interesting metric. Hadn't heard of it before, but had thought one could compare pitches with a theoretical "cueball" pitch (ie an idealized sphere that responds to gravity and drag, but with no spin effects, just a simple calculation) released at the same point, same speed, and same trajectory, and compare where they cross the plate. I _think_ that statcast could do that with the information they have fairly simply, but maybe the relative metric is more useful, or just easier to calculate.
Yeah, I came across some discussion of that when I was trying to get my head around the stuff and that seemed like it would make sense too. Haven't seen the rationale for going one way over the other though!
"Induced movement" looks like an interesting metric. Hadn't heard of it before, but had thought one could compare pitches with a theoretical "cueball" pitch (ie an idealized sphere that responds to gravity and drag, but with no spin effects, just a simple calculation) released at the same point, same speed, and same trajectory, and compare where they cross the plate. I _think_ that statcast could do that with the information they have fairly simply, but maybe the relative metric is more useful, or just easier to calculate.
Yeah, I came across some discussion of that when I was trying to get my head around the stuff and that seemed like it would make sense too. Haven't seen the rationale for going one way over the other though!