quote:
In college you don't have to move at all, just don't go after the pitch.
[Crotchety old man alert]
But that actually isn't the NCAA rule. Here it is:
8-2 The batter becomes a base runner:
....
d. When hit by a pitched ball at which the individual is not attempting to strike;
A.R.—If the batter intentionally gets touched by moving or rolling any part of the body into the pitch, the umpire shall call a strike or ball in accordance with Rules 7-4 and 7-5.(1) If the batter is hit by a pitch in the strike zone, the pitch is a strike, the ball is dead, no runners may advance and the batter is not awarded first base.
(2) If the batter makes no attempt to avoid being touched by the ball and the pitch is out of the strike zone, the pitch shall be called a ball. The ball is dead, no runners may advance and the batter is not awarded first base.
A.R.—If the batter freezes and is hit by a pitch that is clearly inside the vertical lines of the batter’s box, the ball is dead and the batter is awarded first base.By rule, the batter must attempt to avoid unless the pitch (not the batter) is inside the vertical extension of the batter's box.
I think in actual practice there is more variation among umpires than differences in the 3 rule sets.