Way Out of the Zone Percentage
Last week, I examined rookie pitchers Daniel Norris and Rafael Montero for my weekly Quick Looks piece. With both pitchers, they had several pitches which just got away from them. There was no way a hitter was going even think about swinging at them. These pitches put the pitcher constantly behind in the count. While I could use Zone% to determine the amount pitches in or out of the strike zone, I wanted to look a little further out of the zone to find pitches not even close to the strike zone and I ended up with, Way Out of the Zone Percentage (WOOZ%).
I have wanted to look into this subject for while after hearing Brian Bannister mention something in a Baseball Prospectus podcast. He said some pitchers can have problems with their grips as they transition from the higher seamed minor league baseball to the lower seamed MLB baseball. Specifically, he noted it hurt pitchers who throw four-seam fastballs and curve balls. Since starting Quick Looks, which concentrates on young, new pitchers, I have seen a ton of pitches not near the zone which may be caused by not having a good grip. I needed to find and solution and for now it is WOOZ%.