Unwritten rules of baseball

Informal behavioral code followed by some baseball players

There is a set of unwritten rules of baseball that some players and managers follow. The rules often concern gamesmanship and not disrespecting players on the opposing team. Incidents have occurred when one or more players interpret the actions of another player as violating the unwritten rules, which can result in beanballs and bench-clearing brawls. As the rules are unwritten, and in many cases vague, the interpretation is left to the players involved.

This keyword could refer to multiple things. Here are some suggestions: