Years ago the home team would have someone behind the scoreboard with binoculars to steal the catchers signals before the pitch was made.
A huge advantage for the hitters to know what was coming.
Binoculars? Try a telescope. Stealing signals that way is such a New York kind of thing. How do you think the '51 NY Giants overcame that 13-1/2 game deficit, and just how did Bobby Thompson knew what pitch was coming before he hit the Shot Heard 'Round The World.
At least that's what Willie Mays, Monte Irvin, Bobby Thompson and other living members of the team said when interviewed in 2001.