Mark and Andy are back for another installment in their exploration of Statcast measurements. This time, they focus on the pitching side of things. We always hear about velocity and spin rate, but do we really understand what makes a pitcher effective? Your hosts attempt to sort through all the numbers and determine what it all means. What they find is that it is not always clear what makes an effective pitcher. Looking at other measurements like extension and movement help, but it's still not obvious what it all means. Included in the episode is a quick digression into the "peak 7" component of JAWS, as well as a round of everyone's favorite advanced stat guessing game Roll The Stat. Listen or get made fun of in the school yard.