whistle, red and yellow cards and clothes
They are one of the officials in soccer. There is only one referee on the pitch, but there are other officials. One is the assistant referee. They watch the game and may assist the referee by keeping in contact by radio. They can look after things like timing the match and dealing with the substitutions. If the referee has to come off and be replaced, like if they got injured, the assistant referee could take over.
A referee can go anywhere on the pitch, they are constantly on the move. They just have to stand in a position where they have a clear view of the ball.
11 players on each team plus a referee - so 23
Soccer referees need to have at least played college or youth competitive soccer for a number of years. After this, they take a referee course to receive certification.
A 13 year old may be a soccer referee.
The job of a linesman in soccer is to signal with the help of a flag for off sides , corner kicks and also assist the referee in spotting fouls which the referee failed to see . He has to run up and down the side of the pitch to do this.
So he can be distinguished from the rest of his players by, the players on the pitch, the referee and officials and the fans.
In soccer, 23. The two teams of eleven, and the referee. The two linesmen are not considered to be "on" the pitch... which is delineated by the goallines and touchlines.
Yes the fourth referee checks the studs on the boots of the player when he is about to enter the pitch.
You start with 11 players, you must have a minimum of 7 players on at the pitch or the match is ended by the referee.
A soccer referee signals the end of a game by blowing the whistle 3 times.