"It's the managers way to telling us what he wants us to do, so yeah, you have to know the signs." said outfield Trent Oeltjen.
Erick Aybar added, "You have to have your eyes on him always. concentration, to see what he wants."
Most of the signs he flashes mean..nothing. They're just there to fool the other team. And the signs don't matter unless the coach gives the sign "indicator".
"We have a 'hot sign', " said Matt Young. "Its a well-kept secret."
Managers are always worried about other teams picking up their signals and stealing their signs.
Salt Lake Bees manager Keith Johnson said "The funniest thing I heard from another manager is that other teams aren't picking up our signs, because our own players aren't getting them!"
We watched the opposing teams manager and tried to pick up some of his signs, and we found out his faced itched, he loves rock and roll and he did a lame attempt at the moon walk. Obviously, it's not rocket science.
"The easier they are the harder they are to pick up," said Johnson. "It's like when you're trying to fool someone, you end up fooling yourself."
Oeltjen added, "Every team is different, it may be a touch, an indicator..it's what the manager prefers. Or what we can decipher!"
So next time you're at a game, look for the signs!