New Catcher Framing Values
The folks at Baseball Prospectus have released a new method for calculating value of catcher pitch framing.
It seems very thorough, as it adjusts for all of the following factors:
1) They created multiple unique ball-strike probability maps to account for a number of different factors: each separate ball-strike count, 5 separate pitch types: fastball, curveball, slider, offspeed and knuckleball, batter height and handedness, and pitcher handedness.
2) Run values based on specific ball-strike count. For example, getting a strike call on a 3-2 pitch is much more valuable than on a 3-0 pitch.
3) Adjusted for pitchers. So less value for catching a good control pitcher like Kyle Lohse than a wild pitcher like Edwin Jackson.
4) Adjusted for umpires.
The also created a similar model for passed-balls and wild-pitches to determine values for blocking pitches.