Tactical Principles of Soccer: concepts and application

There are few researches that study tactical knowledge of soccer players concerning game principles. It occurs because it is difficult to observe and evaluate the tactical knowledge during the game. Definitions of the game principles are still confusing in the literature. The authors have used diverse terminologies, references and characteristics to define them. The aims of this paper are to provide a review about some concepts regarding soccer tactical principles, to propose the addition of two more tactical game principles and to show their practical applications on the offensive and defensive phase.