It is certain that there is soccer players who based on the trainer directs who them, they vary substantially its yield, and one of the main causes is the level of confidence and support that a technician offers a player. When soccer player jumps to field and knows that endorsement enjoys total on the part of trainer, logically party confronts more motivated and with much more tranquillity, so that it knows that if at a certain time the things do not leave to him absolutely well, is going to feel always endorsed by the person who directs to the equipment, and that is something fundamental that it will make him have more security in itself, and the possibilities that their yield is positive will increase considerably. A player can be to title unquestionable one season, and to the following one to disappear completely of the alignments when a change in relation to the person takes place who is going away to seat in the bench. The player, who until recently time was absolute protagonist in his equipment, happens to the total ostracism since he does not enter for anything the plans of the new trainer. This is something that usually occurs in the world of soccer frequently. The fact at issue, happens simply so that each trainer has his ideas and to they fit in his plans a certain type to them of soccer players, with concrete qualities and to another no, so that they prefer players of completely different characteristics. For that reason based on those preferences a player who is not itself endorsed by his technician, who does not count on his continuous support, can see decreased his yield in relation to which he had when he directed another technician to it who yes trusted him and he showed his support unconditionally to him. The case that can also occur there are two trainers who agree in their soccer criteria on a player they both value and it in measured equal, but as each trainer is different in his form to be and to make the things, one for example is of which speaks continuously with the soccer player animates, it motivates, it he supports and it and other, equal more is reserved, less communicative or it does not dominate sufficient the psychological facet to know how to remove the maximum yield to his players..