[SanDiegoSteve]

Originally Posted by LakeErieUmp

Steve -

I knew it would be hard to visualize. Other than Paul Byrd of the Indians no one does a traditional "windup" anymore, with the first step of the free foot going back behind the rubber and a big two-hand pump of the arms over the head. Most pitchers (picture Mussina here) from the windup simply step to the left then stride forward in delivery. But I'm seeing set pitchers take that same step to the left then lift the non-pivot foot in a delivery.

As to the first part, I have seen decent right handed pitchers step and fake to third then wheel and step to first without disengaging. I might be reading 8.05 comment wrong or, God forbid, I'm journying into OOO land which I hope I'm not.

May be OOO. My philosophy is not to call balks on the 3 to 1 play unless the pitcher doesn't step to 1st. The true meaning of "disengage" is to step backward off the rubber with the pivot foot prior to any other action. It is impossible to "legally" disengage on the 3 to 1 play. I consider them disengaged if they step toward third, then in a separate move, step toward first, changing the pivot foot position substantially. It is not physically possible not to come off the rubber doing this, even if they end up back on the rubber.

This is how the MLBUM puts it:

(h) A pitcher must step directly toward a base before throwing or feinting to that base, but he is not required to throw (except to first base only) because he steps. It is possible, with runners on first and third, for the pitcher to step toward third and not throw, merely to bluff the
runner back to third; then seeing the runner on first start for second, turn and step toward and
throw to first base. This is legal. However, if, with runners on first and third, the pitcher,
while in contact with the rubber, steps toward third and then immediately and in practically
the same motion "wheels" and throws to first base, it is obviously an attempt to deceive the
runner at first base, and in such a move it is practically impossible to step directly toward
first base before the throw to first base, and such a move shall be ruled a balk. Of course, if
the pitcher steps off the rubber and then makes such a move, it is not a balk.

NOTE: With runners on first and third, if a pitcher fakes a throw to third base and then
throws the ball to first base, arm motion is not required in the fake to third, although a legal
step is required. Also, in the fake to third base, the pitcher must break contact with the rubber
before throwing to first base. If the ball is thrown out of play in the throw to first, the pitcher
would be considered an infielder for the purpose of the award.

As to the other question, what those pitchers are doing should not be part of the set position. They may now pitch off the end of the pitcher's mound, as long as part of the foot is in contact, but they can't step down into it like in the windup.