How does pitching skill affect your zone?

[Dakota]

Two "quotes" from an unnamed coach:

Umps many times call a bigger zone for poor, slow pitchers than they do for more experienced, better pitchers in the same game.

And,

A pitcher with good control will get more calls around the edges than one who is wild because there is a psychological benefit from having the ump think you meant to put it there.

Comments? (I'm working on my own comments - will post them in a bit - but I thought I put this out there now...)