Throwing by the Numbers: Other determinants of high 4-seam fastball success

Previously, we discussed how pitch selection, location, and velocity can all impact the swing and miss ability of different pitches. We saw how velocity clearly makes a difference when it comes to the success of 4-Seam fastballs as long as the pitch is thrown high over the plate. However, guys like Aroldis Chapman, Noah Syndergaard, and Ken “100 Miles” Giles all throw triple-digit high heat but don’t appear on any of the high fastball success leaderboards in the previous articles. Why is that? Well, this likely means that there is more to fastball success than just location and velocity. So what other significant factors could we be missing?