Blending Extremely Poorly Hit Balls And FIP.
Evaluating Hard and Soft Hit Balls Using Statcast
Read this article to learn more about the PH% (Poorly Hit) and VH% (Value Hit) stats. You may see those stats in the main stat spreadsheet and not quite understand what they are or what they mean, this article should help clear up any questions you may have. You may also be interested in reading about the updates to the system.
Using Statcast and xStats To Value Pitches
Statcast FIP: Estimating Home Runs
Fitting Running Speed into xOBA and xBABIP.
A general introduction to the methods I use to incorporate running speed. The system remains almost entirely intact, but I have since added a few small corrections here and there to fix small problems. I'm not happy with this system, and I would love to get rid of it, but I haven't found a better solution. Which is a low bar, since I don't feel this solution is very good.
What Exactly Do Launch Angles Mean, Anyway?
A New BABIP for a Statcast Era
A follow up companion piece for xOBA and Using Statcast Data To Measure Offense.
xOBA and Using Statcast Data To Measure Offense
The first public introduction to xStats. Some of the methods described here are obsolete, but the core concepts remain intact. Keep in mind that the window and bucket system has been updated to more resemble a kernel based approach; park factors and handedness factors were added; and exit velocities are modified and corrected for measurement error.