Originally Posted by Roy Tucker
It stands to to reason that the strike zone moves with how they are batting at that point in time, not how their stance was back in spring training or even the beginning of the series. A guy might have had a session with his hitting coach last night and found a flaw and made an adjustment. So he should be stuck with that out of date strike zone?
The zone shouldn't move dependent on your latest tweak. Again, the zone is supposed to be constructed so that no hitter can hope to successfully cover all of it at once (and that no pitcher can keep pumping balls into a spot hitters can't reach).
Hitters are and should be free to set their stances to give them a better chance in various parts of the zone, but this notion that you can adjust your stance to command the entire zone is a false one. It even runs counter to the letter and intent of the rules. Batting stance adjustments should always be a tradeoff.