The 5-4-1 system initially only defines the number of field players in the individual team parts. The goalkeeper is initially excluded from this counting method in the exercise title. The individual team parts are indicated in lines. The first line is the goalkeeper. The second line formation is the five-defense chain, the fourth the four-midfield chain and the fifth line is the striker. If the own team has the ball, the goalkeeper moves between his goal and the middle of his own half of the game, so that he is about 20 meters away from the defense chain and is always playable as a kind of second libero. The individual field player chains have a distance of 8-12 meters in length to the next chain and between 7-12 meters to the next player in width. In this system, an additional central defender is played as protection, who can play at the same height in front of or behind the defensive line. The other positions are occupied by a left and right center-back, two full-backs. In midfield, two midfielders play in half positions and two outer midfielder players as well as a top. If the opponent has the ball, the team moves within the defensive network on an area of maximum 35 x 35 meters. They form minimum lines of defense, depending on the style of the central defender can also be defended on fourth line. It is important to keep certain distances between each other, which ensures optimal defense of your own goal. These distances are usually as follows: 7-12 meters wide and 8-15 meters deep. The distances between the individual players and team parts can vary due to an inconsistent game pace, changes in the game situation or due to a temporary outnumbered play. In the team alliance, a compact, disciplined shift is aimed at, with the aim of narrowing the spaces and thus not allowing the opponent to pass into the depth on the one hand, and depriving him of the opportunity to start individual actions on the other. One of the most important tactical duel measures is to direct the ball-carrying player onto the outside lane and to get possession of the ball by double, and to direct the opening of the opposing team to the outside players by shifting the pass routes so that only the middle pass is possible. There the player is then doubled and put under massive pressure.