FORMULA #26: PITCHER'S WILD PITCH
pSOM WP = (WP * 200) / IP
Pitcher's Wild Pitch rating = (actual wild pitches * 200) / league Innings Pitched
A copycat to the balk approach. Reverse the math, and you will find that over 90% of the results fall within 1 of the actual SOM counterpart.
To conclude with the pitchers, Bob Winberry's contribution on determining Closer Ratings.
FORMULA #26: PITCHER'S WILDPITCH
sompWILDPITCH = ( WP * 200 ) / IP