In a tournament, there are five referees. There are four flag referees and one main referee. The flag referees raise the flag with the color of the opponent scoring a point. The final decision is made by the main referee.
It matters if it's professional. If not, there can be a few as 1. If professional, there are 2-3 referees.
Generally referees are not needed for a race, as it should be obvious if runners do not stay on the course. You do need probably a couple of timers, as well as someone to start the race.
Referees are needed to see if the match is fairly played and to help if someone is injured.
2 referees
Referees are not used in baseball games. This sport uses umpires. They are generally four umpires, one for each base, used in the game.
there are three referees in the NBA.
It was needed to know self defense.
There are 7 referees in a game.
i think there are four referees.
There are four referees in a baseball game.
There are not umpires in basketball but there are referees. The referees are in charge of making sure the game is played correctly such as calling fouls, when needed.