The umpires are the officials of a cricket game. They make final decisions on the field and can ban player. Their role is to keep the game running and to make sure the game is played after the rules.
During a game, there are to umpires on the field and one off the field. One of the empires is standing at the non-striker wicket. He makes sure that the LBW law is kept. The other umpire is standing 20 meters (20yards) off the striker’s wicket on the field. Normally the umpire would stand on the leg side, but he can also stand on the off side. He is ready to judge stumpings and run outs on his side.
The third umpire, off the field, has a television monitor and can review unclear situations. If the umpires aren’t sure, they can signal the third umpire to find out what happened. Such a situation could be a run out or stumping. He has the possibility to review in slow motion, if necessary. He then will signal the umpires on the field, whether he could make a decision or can not make a clear decision. Whenever he can not make a clear decision, the umpires have to decide in the batsman’s favour.
During the game there is also a match referee present. The match referee is watching the game from the outside of the field. He has no influence on the outcome of the game, but gives out penalties for the break of several rules. In professional games, these penalties are monetary penalties.
Should during the game a player start to argue with the umpire, he easily risks a penalty from the referee. Everything else then polite questionnaire is not tolerated.
Should a player make a rude gesture to an opponent player or throw the ball on the ground in disgust, he easily risks big fines from the referee and a game suspension. Those gestures are handled as the most serious misconduct.
If a player would attack an umpire or player physically, which so far hasn’t happened, he would probably have to end his career.