Check out this "controversy"

[DonInKansas]

Originally Posted by cc6

Let's remember that the knee is actually 5 or 6 inches in length if you include the hollow beneath the knee. The hollow is borderline unhittable in my opinion. A lot of curveballs and splitters pass the hallow at the plate but end up in the dirt- what are you going to call that pitch? The other potential problem with calling the hallow is that it could lead to more wild pitches.

Not if he moves up in the box. A pitch on the inside black is borderline unhittable for a guy crowding the plate; you gonna ball that pitch too? I get every strike I can, and the pitch at the bottom of the knee, especially on the outside corner, is my favorite pitch bar none when a guy's throwing it consistently.