Sports are seldom played with any kind of secrecy - the only exception being games likes Chess or Poker and even in those cases, everyone is on a level playing field with access to the same information, it's only the individual players strategy and their bluffs that's kept secret.
Maybe you are not familiar with American football; replace "players" with "coaches" and that's exactly how it works.
Maybe you are not familiar with American football; replace "players" with "coaches" and that's exactly how it works.