What are the rules for giving a red card?

The referee doesn't GIVE a player a red card. The referee sends the player off the field, out of the game, away from the match, and then shows the red card (properly, he holds it high over his own head) so that everyone understands that the player has been sent off. read more

FIFA does not explicitly state the limit for the number of red cards that a referee may give. However, a game must be stopped if a team plays with less than seven players. Therefore, the practical limit to a red card is four per team, a maximum of eight in a single match. read more

The referee shows the yellow penalty card to the offending player then records the player details in a small notebook - often referred to as 'booking'. The player who receives a yellow card may continue playing. Should he make another misconduct a second yellow card, he will be shown a red card and is ejected from the game. read more