The football is a team sport played between two teams of eleven players each. It is played on a rectangular field of grass, with a goal or goal on each side of the field. The objective of the game is to move a ball through the field to locate it within the opposite goal, an act known as a goal. The team that scores the most goals after the match is the winner.
Rules of Soccer
The football matches have a duration of 90 minutes, which are played in two parts of 45 minutes each, with an intermission break of 15 minutes.
The playing field where football matches are played , is between 90 and 120 meters long, and between 45 and 90 meters wide.
The football field shall have two equal parts separated by a midfield line with a center circle of 9.15 meters radius.
In each part of the terrain, there will be two areas, one large and one small. In the middle of both will be located the penalty point, 11 meters from the goal line or bottom line.
The ball, ball or ball with which football is played, has a weight of 410 to 450 grs. and a circumference of 68 to 70 cm. The soccer ball has two layers, an inner rubber chamber and a flexible leather outer cover. It must be swollen at a pressure of 600 to 1,100 g / cm2.
Depending on the match, normally there are 4 referees in a football match , the field referee, two line judges who move on the sidebands and a fourth referee off the field. Two additional assistant referees have recently been added to attend to situations occurring in the surrounding area and goal situations, which are located on the baseline.
The numbering of the game systems corresponds to the tactical positions in the field.
They are usually named according to the number of players in each position of the field of play, whether defenders, midfielders or forwards. Usually it is of the type 4-4-2 or 4-3-3, always the total has to give 10, since the porter does not associate to the tactics of game.