I’m new here, so if I’m posting this in the incorrect forum I apologize in advance.
My question might seem odd, or perhaps be even rather stupid, but here goes … I’ve noticed that when pitchers are warming up, they wave their glove at the catcher before a pitch. My guess is that it’s some sort of “sign language” to let the catcher know which pitch they are throwing. Am I on the right track, or completely lost in the woods? Thanks for the feedback.