This research aims to determine the effect of tasks and egos of taekwondo athletes on the coach-athlete relationship and the effect of coach-athlete relationship on motivation in sports. Thus, "Coach-Athlete Relationship", "Task and Ego Orientation in Sports" and "Motivation in Sports" scales have been applied to the national team athletes attending the championship. The relational screening model which reveals the relationship between variables has been used in data analysis. Scaling and structural model have been established by SPSS-15 and LISREL programs. Additionally, it is concluded that perceptions about task and ego orientations of athletes explain 43% of perceptions belonging to coach-athlete relationship and 47% of perceptions belonging to motivation in sports. That the perceptions regarding task and ego orientations of athletes and coach-athlete relationship explain 77% of perceptions concerning the motivation in sports and that the athletes' perceptions regarding coach-athlete relationship explain 24% of perceptions concerning the motivation in sports.