players, match officials, Referees, assistant referees, stewards
Four. One in the center, two assistant referees, and one fourth official.
There are 7 referees in a game.
4 feferees. The main referee, two line referees, and the 4th referee who controls the board for substitutions.
3 referees are in soccer and football
as a minium 1 referee and 2 assistant referees.
Football because in every professional match you need two referees of different cultures to the teams playing each other on that day.
there is usually 3 referees in highschool and college im not sure about the nba
The Football association relating to those matches will choose the referees from the set panel of referees that they have.