The present study was conducted to clarify the roles of coaches in sports instruction and the essentials of these roles. Up to now, there has been no unified definition of coaching, and the conditions and grounds for selecting coaches and analyzing them collectively have remained unclear. In addition, logically, “induction” rather should be “extracted,” and the existing intelligence of the contents (intension) of the concept can be logically assumed. Accordingly, this approach seems inappropriate for revealing the essence of coaching. In order to overcome this problem, this research classifies into occasions of entities and consistence of existence. Under the subject of existence, entities theoretically transcend this through individualization, and this method is used to reach the existence of entities. As a result of this consideration, coaches first “tame” athletes to a system of physical techniques in order to address specific items, and then they endeavor to maintain the same level of play. It was clarified that coaches are specialists who are able to help athletes “transcend” from their current conditions. Moreover, coaches can using external force to compel a “physical change” in athletes, as leaders who can control athletes intelligently and actively, using a process that consists of and production based on theoretical knowledge. Thus, coaching involves the use of “compelling power” to rise from restrictions under specific conditions, and to encourage constant excellence.