You tap the plate and then turn. You turn to get the bat and arms in
position.
David A.
Following your golf logic, the batter's shoulders after the 'tap and turn'
would be on or near the same plane as the bat, right? Let's pause for a
moment to get this picture:
The shoulders are horizontal and the bat is...
...almost vertical?
Oh me, SuperDave. Pass the peanuts and crackerjacks!