Cleaning up after Micah (part 3)

Welcome back to D-Backs f/x.

Check out Part 1 and Part 2

Micah Owings had some interesting "drift" in his x0 at Chase.

Here's how his team mates fared. The numbers are normalized from 0 to 1. The higher the number, the more to the pitcher's left, relative to his right-most release point. Release point is average release point by game.

As the number approaches 0, it is approaching the right-most value, or, apparently, "correct" value.

This graph shows normalized x0 with time along the x axis.



You can see the trend is the same for all four starters, supporting the interpretation of Micah's shift at home as nothing more than a system adjustment, correcting release points by a few inches to the pitcher's right.

It does seem the correction gets a bit un-done, but what happens in that last game for Owings, I dunno, we'll see what we get this year.