So, the head of umpires works for MLB, and they give the umpires the pitch f/x info that, by studying it, has caused the umpires to increase in strike zone that they call. The umpires do that cause they are graded on strike zone accuracy which can be determined by pitchf/x given to them by MLB. And knowing that, we can't conclude that MLB has directed the expanded strike zone (even if that means, hey guys, call the strike zone by the rule which you haven't been doing)? And now we have MLB saying that Ks are out of control and they are looking at shrinking the zone that has gotten bigger over the last five years, a zone that has coincided with the pitchf/x era.