[DG]

A checked swing is a ball. An unsuccessful checked swing is a strike.

A batter who is trying to check his swing unsucessfully is NOT "offering", he is just too late.

A slow motion study was done of major league batters, and in a large majority of the cases what "appeared" to be a checked swing was not, if you consider a bat crossing the plate to be a swing. So if major league batters can't stop a swing, why should we think a HS player can?

My rule of thumb is that if any part of the bat was at any time over the plate, it's a strike.

Bunts are different so don't confuse the subject. You can have a bat over the plate and it not be a strike.

They always attempted, until in mid-swing they changed their mind. The question is, did they wait too late to change their mind?