Ever wonder the exact location, movement, speed, rotation, spin angle of a pitch? With Pitch F/X, every ball thrown in the majors is calculated to a science. It’s pretty awesome but even after spending hours looking at the data, it can be a bit confusing as to what the variables mean and how they are meaningful. I’ll try to explain most of the variables to the best of my abilities. I’ll be using F/X data from Dallas Braden’s perfect game on May 9, 2010 against the Tampa Bay Rays.