Tom Verducci goes into detail about spying in baseball, and how it contributes to slowing down the game
Here’s how quickly things have changed, according to a Dodgers source. Three years ago, if you walked into the Dodgers’ video room behind their Dodger Stadium dugout you would likely have found Zack Greinke pouring over video of opposing hitters, looking for any edge he could find to match up his stuff against their weakness. This year, if you walked into the same room you would have found a small army of 20-something analysts in polo shirts and slacks pouring over video from the in-house cameras, like the security room at a Vegas casino. Most teams train their cameras on the catcher, the pitcher (from several angles), the third base coach and the dugout.
These cameras are not used for training purposes. They are used expressly for stealing signs and deciphering “tells” from pitchers.
https://www.si.com/mlb/2018/11/02/cameras-stealing-signs-pace-play-rob-manfred
Here’s how quickly things have changed, according to a Dodgers source. Three years ago, if you walked into the Dodgers’ video room behind their Dodger Stadium dugout you would likely have found Zack Greinke pouring over video of opposing hitters, looking for any edge he could find to match up his stuff against their weakness. This year, if you walked into the same room you would have found a small army of 20-something analysts in polo shirts and slacks pouring over video from the in-house cameras, like the security room at a Vegas casino. Most teams train their cameras on the catcher, the pitcher (from several angles), the third base coach and the dugout.
These cameras are not used for training purposes. They are used expressly for stealing signs and deciphering “tells” from pitchers.
https://www.si.com/mlb/2018/11/02/cameras-stealing-signs-pace-play-rob-manfred