One from the mound?

[ctblu40]

Originally Posted by mbyron

He made a standard jump step, which is legal and counts as throwing from the rubber.

The way I always think of this is that the pitcher is legally "in contact" unless he steps off as per "8.01 (e) If the pitcher removes his pivot foot from contact with the pitcher’s plate by stepping backward with that foot, he thereby becomes an infielder..."

In other words, this is the way the rules describe how a pitcher disengages. Any other move and he's still in contact.