With runner on 3B, pitcher steps on rubber with both feet as if pitching from wind-up. Pitcher initiates wind-up delivery with a rocker step back but steps back with posting leg instead of stride leg. Pitcher then turns toward 3B, lifts knee, steps toward 3B and throws to 3B.
On one hand, the pitcher has stepped back off the rubber with the correct foot for "stepping off". On the other hand, this seems to be an attempt to deceive the runner. Is this a balk or not?
Original Post