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For whatever reason, it hadn't really occurred to me before this...
Scouts have a bias against short pitchers, usually arguing that such pitchers are more likely to get hurt. But it occurs to us that short pitchers are releasing the ball from a foot or two farther away, and this unstated, subconscious argument may have helped to cause this bias.
As y'know, Tim Lincecum, with his Ichiro-like body control, takes a huge leap forward off the mound and messes up the distance that batters are conditioned to expect from a pitcher of his height.
It would be interesting to know which pitchers threw the ball from "closer" than their body type would indicate. Randy Johnson and Nolan Ryan always benefitted from this.