When watching MLB I’ve noticed that when the catcher walks over to the pitcher to chat that they take their gloves and cover their mouths. I assume this is so someone watching with binoculars or watching tv who can read lips can’t decipher what they are saying and then pass it on to the opposing team.
Has this ever really happened that they now have to make this common practice? Has a team ever really had someone who is skilled enough in reading lips watch the pitcher/catcher discussions and then pass this info on to the opposing team dugout where they actually took advantage of it?