This is great, Judd. Thanks! I've been looking for this over the years and just gave up, I guess. Glad to see somebody took the time to put it online (and somebody here took the time to help me out!).
Now we can get to the afore-mentioned 8 exceptions for leaving the batter's box between pitches:
1. when the ball is batted fair or foul.
2. on a swing, slap or check swing.
3. when forced out of the box by a pitch.
4. on a wild pitch or passed ball.
5. when a play is attempted.
6. when time has been called.
7. when the pitcher leaves the eight-foot pitcher's circle or the catcher leaves the catcher's box.
8. on a three ball count pitch that is a strike but the batter thinks is a ball.
If the batter leaves the batters box and delays play for any other reason the umpire MAY warn the batter OR call a strike (emphasis added). Any number of warnings and called strikes can be made with each batter. No pitch has to be thrown as the ball is dead.
So...
The only reason why a batter could possibly be allowed to leave the box in the above scenario (running to 1B with only 1 or 2 strikes) would be because she swung. I think the intent of exception #2 is clear - the batter may "leave" the box because her swing mechanics took her out of it. The exception isn't meant for the batter to swing, miss and run to 1B.
Likewise, there is no provision for leaving the box after Ball 3 is called (the trick played described in another recent thread).
However...
The rule gives PU the discretion to issue a warning, call a strike or do nothing. So it would seem just about any of the umpire's posts on this would be accurate. It's up to them to determine how to handle the situation.



























