on an outside pitch, step toward the ball and extend your hands. be sure not to step out of the batters box though. on an inside pitch step back with your front foot and pull in your hands and make a quick short swing
Yes, this is covered by MLB rule 5.09(a):
"The ball becomes dead and runners advance one base, or return to their bases, without liability to be put out, when --
(a) A pitched ball touches a...
I watched this happen yesterday between the Cubs and Dodgers. It is a strike. It happened as a player was hit in the leg as they were squared up to bunt. His back foot was outside the batter's box...