In my opening game last night, as Bengie Molina was on the Injury list, I had my only other catcher, A.J. Pierzynski (a Lefty) in the game for him.
With the game tied in the 8th Inning, a Lefty comes into the game, and HAL decides to use my LHP Pinch hitter, Jorge Cantu, to hit for A.J. . . . leaving me with no catcher. :? Enter Jorge (a non-catcher) . . . who gives up a Passed Ball which sets up the winning run. :(
I looked back and sure enough I did NOT -- on A.J's individual playing card -- have the "do not p.h. for Vs. Lefties" checked off.
My conclusion (and tell me if I'm wrong) is that HAL does not look ahead at the fielding situation before he (she? it?) removes someone for a p.h.
A lesson learned.