So....technically, the batter could have been out because pine tar was too far up on the bat. I guess I don't know any other way it would have gotten on the ball.This was the culprit. A big old glob of it.Possibly pine tar.
Which....begs the question....is there a benefit to the pitcher if a little bit of pine tar is on the ball? If so, is it against the rules for either the catcher or pitcher to have pine tar on them while on defense?All sorts of ways to get it on there, including intentionally put it on there. And it's not like they wash chest protectors daily.
Catchers sometimes put pine tar somewhere on their uniforms, often around the shin guards, to help give them a better grip.