Any game that has rules must also have in place ways of enforcing the rules as well as a system of punishing offenders to instill a sense of seriousness in the game. Being a full contact game that involves direct contact among opposing team members, it is very important to put guidelines to ensure that players do not get overboard in the course of a game. For this reason, soccer is played under the full watch of several officials to ensure fairness and to maintain the integrity of the game. Among the most prominent officials in a soccer game are the central referee and the two lines men.
Other than these three, there are several other officials who watch the proceedings from outside the pitch, their main role is to verify that the officials in the pitch are exercising fairness in whatever decisions they take in the course of the game. These officials include the match commissars among others. Their main role is to resolve any disputes that may crop up because of the decisions made by the main officials in the field.